Logochromatographyshopneu
Solid Phase Extraction

The largest range of competitive, very high quality  and unique Solid Phase Cartridges

 Product selection

1. Your sample matrix is:

Aqueous

Biological fluid,  water extract of tissue  etc,

Organic

Organic extracts of tissue, hexanes, dichloromethanes etc.

2. Recommended Retention Mechanism

Reverse Phase

Ion

Exchange

Normal Phase

3. Analyte Characteristics

Moderately to polar to non-polar compounds

Weakly Cationic/Anionic

Strongly Cationic/Anionic

Moderately polar to very polar compounds

4. Recommended SPE Phases

C18 E, C18 E HC, C18
C8, Phenyl, CN, C8/SAX,
C8/SCX
 

WCX, PSA, P-WAX, NH2

SCX/SAX, PRS, P-SAX, P-SCX, C8/SAX, C8/SCX

Silica, CN, NH2, Diol, PSA, GraphiCarb,  Florisil, Floridil PR, Alumina N, A, B, GraphiCarb/NH2

 

Product Properties

Base
Material

Phase

Category

Bonded
Functional
Group

Endcapped

Carbon
Loading
(%)

Surface
Area (m2/g)

Particle
Size
(μm)

Pore
Size
(A)

Silica-Based

C18E

Non-polar

C18

Yes

17

480

45

60

C18E HC

Non-polar

C18

Yes

25

480

45

60

C18

Non-polar

C18

No

 24

480

45

60

C8

Non-polar/polar

C8

Yes

 9

480

45

 60

Phenyl 

Polar/Non-polar

Phenyl

 Yes

7

480

45

60

CN

Polar

CN

No

7

480

45

60

Diol

Polar

Diol

No

7

480

45

60

NH2

Polar

Aminopropyl

No

  7

480

45

60

PSA

Polar/Weak
anion exchange

Ethylenediamine-npropyl

No

8

480

45

60

Silica

Polar

Silica

 N/A

N/A

480

45

60

SAX

Polar/Anion
exchange

Trimethylaminopropyl

No

 8

480

45

60

SCX

Cation
exchange

Benzenesulfonic acid

No

11

480

45

60

WCX

Weak cation
exchange

Carboxylic acid

Yes

7

480

45

60

PRS

Cation
exchange

Propylsulfonic acid

No

2

 480

45

 60

Non-silica
Inorganic
based
 

Florisil

Polar

Florisil

N/A

 N/A

 

75-150

N/A

Florisil PR

Polar

Florisil/Na2SO4

N/A

N/A

 

150-250

N/A

Alumina-A

Alumina acidic

 

N/A

N/A 

 

50-200

N/A

Alumina-B

Alumina basic

 

N/A

N/A

 

50-200

N/A

Alumina-N

Alumina neutral

 

N/A

N/A

 

50-200

N/A

Celite

Polar

 

N/A

N/A

 

75-100

 N/A

Polymer -
Based

BRP

non-polar/Polar

 

N/A

N/A

850

45

N/A

P-SAX

Anion exchange
/Polar

SAX-functionalized 

N/A

N/A

850

45

80

P-SCX 

Cation
exchange/
Polar/

SCX functionalized

N/A

N/A

850

45

80

P-WAX

Weak cation
exchange/ Polar

WAX functionalized

N/A

N/A

850

45

80

PS/DVB

Polar/non-polar

 

N/A

N/A

850

45

80

GraphiCarb 

Strongly nonpolar/
Anion
exchange

Graphitized carbon

 N/A

 N/A

100

120-400

N/A

Specialty
and Mixed
Mode

GraphiCarb/
NH2

Non-polar/
Polar/ Anion
exchange

Graphitized carbon/
aminopropyl

No

N/A

 480

45

 60

C8/SCX

Non-polar/
Cation
exchange

C8/SCX

No

N/A

480

45

60

C8/SAX   

Non-polar/
Anion exchange

C8/SAX

No

N/A

480

45

60

1) Silica-Based SPE:

The sorbent currently most commonly used in SPE is still the silica gel or bonded silica gel, and its pH scope of application is pH 2-8.WelchromTM SPE silica products are based on highquality high-purity amorphous silica with the average particle size of 45 μm, the average pore size of 60, the pore volume of 0.80 cm3/g, and the specific surface area of 480 m2/g. Also we apply Welch's unique surface treatment technology and bonding chemistry on SPE silica, to ensure high extraction efficiency of the analytes. Silica-based WelchromTM SPE phases include C18E (endcapped), C18E HC (endcapped), C18 (not endcapped), C8, CN, NH2, PSA (diamine), Phenyl, SCX, SAX, WCX, PRS (sulfonic acid), Silica, Diol, and other 13 kinds of packing.

 

WelchromTM C18E

  • Extremely retentive for non-polar compounds
  • Effective for desalting aqueous mixtures
  • The most popular SPE C18 sorbent.
  • The least selective phase: retain most organic analytes from aqueous matrices
  • Beneficial for extracting numerous analytes diverse in structure from the same sample
  • Typical applications include herbicides, fungicides, pesticides and other aqueous hazardous waste materials

WelchromTM C18E (endcapped C18) is very hydrophobic and the most popular SPE sorbent in WelchromTM SPE products because of its extreme retentive nature for non-polar compounds. C18 is generally regarded as having the broadest spectrum of retention among bonded silica sorbents, since it retains most organic analytes from aqueous matrices. When analyzing small to intermediate molecules, WelchromTM C18E can be used for desalting aqueous matrices prior to ion exchange, as salts pass through the sorbent unretained. Because of its strong binding ability, it has less selectivity for non-polar organic compounds, so it is often used for separation of compounds with big difference in structure and polarity

Order Detail (Copy paste into “Contact”)

  Article

Specification

Packing (pcs /bag)

Part No

C18E

100mg/1ml

100

00501-11001

C18E

100mg/3ml

50

 00501-11002

C18E

150mg/3ml 

50

00501-11003

C18E

200mg/3ml

50

00501-11004

C18E

500mg/3ml

50

00501-11005

C18E

500mg/6ml 

30

00501-11006

C18E

1000mg/6ml

30

00501-11007

C18E

2g/10ml 

20

00501-11008

C18E

10g / bottle

 

00501-11017

C18E

100g / bottle

 

00501-11018

 

 

WelchromTM C18E HC

  • The most retentive for non-polar compounds in WelchromTM SPE C18
  • Use for organic compounds which typically couldn’t be retained by other C18
  • The most hydrophobic, bonded silica sorbent; 25% carbon loading

WelchromTM C18E HC is the most hydrophobic, bonded silica sorbent. It is similar to WelchromTM C18E, but contains even higher carbon content, up to 25% carbon. Such high carbon loading helps to further enhance the retention of very polar compounds that typically couldn’t be retained by other SPE C18.

  Article

Specification

Packing (pcs /bag)

Part No

 C18E HC

100mg/1ml

100

00502-11001

 C18E HC

100mg/3ml

50

00502-11002

 C18E HC

150mg/3ml 

50

00502-11003

 C18E HC

200mg/3ml

50

00502-11004

 C18E HC

500mg/3ml

50

00502-11005

 C18E HC

500mg/6ml 

30

00502-11006

 C18E HC

1000mg/6ml

30

00502-11007

 C18E HC

2g/10ml 

20

00502-11008

 C18E HC

10g / bottle

 

00502-11017

 C18E HC

100g / bottle

 

00502-11018

 

WelchromTM C18

  • Very retentive for non-polar compounds
  • Silanol activity permits metabolite fractionation
  • Enhanced retention for polar and basic compounds

WelchromTM C18 is a non-endcapped version of WelchromTM C18E HC, leaving more active residual surface silanols that provide additional polar-polar interactions, permit the fractionation of metabolites, and enhance retention of polar and basic compounds compared to an endcapped C18. Its performance is equivalent to BondElute C18 OH.

  Article

Specification

Packing (pcs /bag)

Part No

 C18

100mg/1ml

100

00504-11001

 C18

200mg/3ml

50

00504-11004

 C18

500mg/3ml

50

00504-11005

 C18

500mg/6ml 

30

00504-11006

 C18

1000mg/6ml

30

00504-11007

 C18

2g/10ml 

20

00504-11008

 C18

10g / bottle

 

00504-11017

 C18

100g / bottle

 

00504-11018

 

WelchromTM C8

  • Excellent for strong retained non-polar compounds
  • Less retentive than C18
  • Some polar interaction, but not significant
  • Used to elute very large hydrophobic molecules too
  • Strongly retained on WelchromTM C18E
  • Use this less retentive phase for the rapid release of hydrophobic molecules using weaker organic

WelchromTM C8 has a very similar property to C18, but is less retentive for non-polar compounds due to its shorter carbon chain. At the same time, the analytes access more to C8 silica surface silanols than to C18. Therefore, C8 have more polar interaction for polar compounds than C18, but not significant. WelchromTM C8 is a good replacement when the analyte is irreversibly retained on C18. Experiments show that C8 adsorbent can extract both fat-soluble and water-soluble vitamins in human blood.

  Article

Specification

Packing (pcs /bag)

Part No

C8

100mg/1ml

100

00505-11001

C8

200mg/3ml

50

00505-11004

C8

500mg/3ml

50

00505-11005

C8

500mg/6ml 

30

00505-11006

C8

1000mg/6ml

30

00505-11007

C8

2g/10ml 

20

00505-11008

C8

10g / bottle

 

00505-11017

C8

100g / bottle

 

00505-11018

 

WelchromTM Phenyl

  • Similar polarity to C8
  • Additional polar secondary π-π interactions enhanced retention of aromatic compounds
  • Different selectivity compared with the C18 and C8 phases when both aromatic and non-aromatic compounds are being extracted

WelchromTM Phenyl is commonly used to extract nonpolar compounds. Its polarity is similar to C8, but because of unique aromatic π-π polar interaction, conjugated compounds have strong retention. WelchromTM Phenyl has the best selectivity for a mixture of aromatic compounds and non-aromatic compounds.

  Article

Specification

Packing (pcs /bag)

Part No

Pheny

100mg/1ml

100

00506-11001

Phenyl

200mg/3ml

50

00506-11004

Phenyl

500mg/3ml

50

00506-11005

Phenyl

500mg/6ml 

30

00506-11006

Phenyl

1000mg/6ml

30

00506-11007

Phenyl

10g / bottle

 

00506-11017

Phenyl

100g / bottle

 

00506-11018

 

WelchromTM Silica

  • Unbonded acid washed high purity silica, ideal for normalphase SPE and other modified flash techniques
  • Considered the most polar normal-phase sorbent available
  • Highly polar sorbent to retain polar compounds from nonpolar matrices
  • Separating compounds with very similar structure

WelchromTM Silica is generally regarded as the most polar SPE sorbent available. Its retention is mainly due to hydrogen bonds. WelchromTM Silica is particularly effective at separating compounds with a very similar structure. It also exhibits a character of weak acids; at the mid pH conditions, silica surface silanols can be ionized.

 

  Article

Specification

Packing (pcs /bag)

Part No

Silica

100mg/1ml

100

00500-11001

Silica

200mg/3ml

50

00500-11004

Silica

500mg/3ml

50

00500-11005

Silica

500mg/6ml 

30

00500-11006

Silica

1000mg/6ml

30

00500-11007

Silica

10g / bottle

 

00500-11017

Silica

100g / bottle

 

00500-11018

 

WelchromTM CN

  • Endcapped cyanopropyl (7% C)
  • Ideal for extracting aqueous analytes
  • Retention in aqueous and organic matrices
  • Behave as either reversed-phase or normal-phase
  • Ideal for very hydrophobic analytes that may be irreversibly retained on more hydrophobic sorbents such as WelchromTM C18E
  • Less retentive than WelchromTM Si or WelchromTM Diol when used as normal-phase (organic matrices such as hexane or oils)

WelchromTM CN is a cyano bonded polar phase, and can be used in either normal phase or reversed phase mode for polar and non-polar compounds. In the normal phase mode, it is the least to retain polar adsorbent; in reversed phase mode, it is also the least to retain non-polar adsorbent. It can be used as a non-polar sorbent for extraction of both polar and non-polar molecules from aqueous samples, and for extraction of polar molecules from relatively non-polar solvents. It is ideal for  applications in which extremely non-polar compounds would be irreversibly retained on high carbon load sorbents such as C8 and C18.

  Article

Specification

Packing (pcs /bag)

Part No

CN

100mg/1ml

100

00507-11001

CN

200mg/3ml

50

00507-11004

CN

500mg/3ml

50

00507-11005

CN

500mg/6ml 

30

00507-11006

CN

1000mg/6ml

30

00507-11007

CN

10g / bottle

 

00507-11017

CN

100g / bottle

 

00507-11018

 

WelchomTM NH2

  • Normal phase or anion exchange sorbent
  • Weaker anion exchange than SAX
  • Amenable to separating structural isomers
  • Allows the rapid release of very strong anions such as sulfonic acids that may be retained irreversibly on SAX (a quarternary amine sorbent that is always positively charged)

WelchromTM NH2 is anaminopropyl bonded sorbent for polar compounds. This dual purpose sorbent can act either as a polar phase or weak anion exchanger. When using nonpolar solvent such as n-hexane as eluting solvent, it can be used for compounds containing-OH,-NH or-SH group by hydrogen bonding. Because of its pKa value of 9.8, in an
aqueous environment with pH 7.8 or less, it can function as a weak anion exchanger. Similar to Diol and Silica sorbents, WelchromTM NH2 is excellent for the separation of structural

  Article

Specification

Packing (pcs /bag)

Part No

NH2

100mg/1ml

100

00509-11001

NH2

200mg/3ml

50

00509-11004

NH2

500mg/3ml

50

00509-11005

NH2

500mg/6ml 

30

00509-11006

NH2

1000mg/6ml

30

00509-11007

NH2

10g / bottle

 

00509-11017

NH2

100g / bottle

 

00509-11018

 

WelchomTM PSA

  • Alternative choice to WelchromTM NH2 for polar compounds
  • Higher ionic capacity than WelchromTM NH2
  • Chelating sorbent

WelchomTM PSA is an ethylene diamine-N-propyl bonded sorbent, and is similar to WelchromTM NH2. In reversed phase condition, its polarity is between C18 and silica. It has excellent selectivity for a broad range of polar and mediumpolar compounds. It is also can be used as a weak anion exchange cartridge. WelchomTM PSA has two amino groups (pKa values of 10.1 and 10.9), providing a higher ion exchange capacity. WelchomTM PSA can effectively remove fatty acids in the pesticide residues in food (including oleic acid, palmitic acid, linoleic acid, etc.), organic acids, some polar pigments, sugars, and other matrices. It can also be used as a metal ion chelating agent by two amino groups.

  Article

Specification

Packing (pcs /bag)

Part No

PSA

100mg/1ml

100

00508-11001

PSA

200mg/3ml

50

00508-11004

PSA

500mg/3ml

50

00508-11005

PSA

500mg/6ml 

30

00508-11006

PSA

1000mg/6ml

30

00508-11007

PSA

10g / bottle

 

00508-11017

PSA

100g / bottle

 

00508-11018

 

WelchromTM Diol

  • Polymerically bonded, 2,3-Dihydroxypropoxypropyl (7% C)
  • Provides polar and non-polar modes
  • Strong hydrogen bonding with analytes
  • Resembles WelchromTM Silica in its capabilities

WelchromTM Diol is a silica-based polar SPE adsorbent bonded with two hydroxyl groups for polar compounds. Depending on the cartridge preparation and sample matrix, this polar bonded sorbent can exhibit both polar and weak nonpolar interactions, It is more frequently used to extract polar molecules from relatively non-polar solvents using hydrogen bonding interactions. With appropriate cartridge conditioning, it can be used as a non-polar sorbent to extract relatively nonpolar molecules from aqueous samples. It could differentiate among isomers and other structurally similar compounds. It is a better choice than WelchromTM Silica when used as an absorbent to extract polar compounds in a polar solvent.

  Article

Specification

Packing (pcs /bag)

Part No

Diol

100mg/1ml

100

00510-11001

Diol

200mg/3ml

50

00510-11004

Diol

500mg/3ml

50

00510-11005

Diol

500mg/6ml 

30

00510-11006

Diol

1000mg/6ml

30

00510-11007

Diol

10g / bottle

 

00510-11017

Diol

100g / bottle

 

00510-11018

 

WelchromTM SCX

  • A polymerically bonded, benzene sulfonic acid phase with a H+ counter ion
  • Very low pKa ligand elicits strong analyte interaction
  • Useful for compounds with cationic and non-polar characteristics
  • Superior cleanup a single sorbent

WelchromTM SCX is a strong cation exchanger with a very low pKa. It is used to extract positively charged basic compounds. The presence of the benzene ring in the functional group increases the potential for non-polar interactions. This nonpolar characteristic becomes particularly important when conducting ion-exchange from aqueous systems.

  Article

Specification

Packing (pcs /bag)

Part No

SCX

100mg/1ml

100

00512-11001

SCX

200mg/3ml

50

00512-11004

SCX

500mg/3ml

50

00512-11005

SCX

500mg/6ml 

30

00512-11006

SCX

1000mg/6ml

30

00512-11007

SCX

10g / bottle

 

00512-11017

SCX

100g / bottle

 

00512-11018

 

WelchromTM SAX

  • A polymerically bonded quarternary amine that remains charged at all pH levels
  • Retains negatively charged compounds, especially those that elute from weak anion exchange sorbents
  • Selectivity can be user-modified for increased flexibility
  • Minimal non-polar interactions

WelchromTM SAX is a silica-based strong anion exchange SPE adsorbent, usually used for extraction of negatively charged substances from water or aqueous solution, especially for the extraction of weak acids such as carboxylic acids, which may not retain effectively on weak anion exchange sorbents.

  Article

Specification

Packing (pcs /bag)

Part No

SAX

100mg/1ml

100

00513-11001

SAX

200mg/3ml

50

00513-11004

SAX

500mg/3ml

50

00513-11005

SAX

500mg/6ml 

30

00513-11006

SAX

1000mg/6ml

30

00513-11007

SAX

10g / bottle

 

00513-11017

SAX

100g / bottle

 

00513-11018

 

WelchromTM WCX

  • A moderate polarity sorbent and weak cation exchanger (pKa 4.8)
  • Cation exchange with no need for extreme basic conditions
  • Wider selectivity range provides more eluent options
  • Polar or non-polar depending on matrix or solvent
  • Typically used when dealing with very strong cationic (high pKa) compounds that may be irreversibly retained on strong cation exchangers

WelchromTM WCX is a silica-based weak cation exchange SPE adsorbent, bonded with carboxyl functional groups, commonly used in extraction of the quaternary ammonium compounds or other strong cation.

  Article

Specification

Packing (pcs /bag)

Part No

WCX

100mg/1ml

100

00514-11001

WCX

200mg/3ml

50

00514-11004

WCX

500mg/3ml

50

00514-11005

WCX

500mg/6ml 

30

00514-11006

WCX

1000mg/6ml

30

00514-11007

WCX

10g / bottle

 

00514-11017

WCX

100g / bottle

 

00514-11018

 

WelchromTM PRS (propylsulfonic acid)

  • A propylsulfonic acid phase
  • Strong cation exchange sorbent, also capable of polar and hydrogen bonding interactions
  • Less acidic than WelchromTM SCX
  • No appreciable non-polar interactions
  • Unique selectivity properties

It is less acidic than WelchromTM SCX, so is referred to as WelchromTM SCX-2.They have slightly different selectivity. WelchromTM PRS shows less non-polar hydrophobic interaction than WelchromTM SCX. So in non-polar solvents, PRS is capable of polar and hydrogen bonding interactions. Due to the very low pKa of PRS, it is recommended for sample preparation of weak cation, such as pyridine, etc., with a high recovery rate. It is also widely used for sample preparation of malachite green.

 

  Article

Specification

Packing (pcs /bag)

Part No

PRS

100mg/1ml

100

00511-11001

PRS

200mg/3ml

50

00511-11004

PRS

500mg/3ml

50

00511-11005

PRS

500mg/6ml 

30

00511-11006

PRS

1000mg/6ml

30

00511-11007

PRS

10g / bottle

 

00511-11017

PRS

100g / bottle

 

00511-11018

 

2. WelchromTM inorganic non-Silica based SPE

WelchromTM inorganic non-Silica based SPE sorbents are used as normal phase adsorbents. Their polarity, surface acidity and application are different from each other or from silica. They are usually specifically for sample preparation of very complex samples, such as pesticide residues, plant and animal tissue samples in the organic solvents, and Sudan dyes and malachite green in foods. Like our WelchromTM silica-based SPE adsorbents, non-Silica SPE adsorbents have been passed through a series of cleaning and activation processes and strict quality control process, to ensure high quality and excellent reproducibility.

 

WelchromTM Florisil

  • Particles size is 100-200 mesh
  • Fast flow so ideal for viscous samples
  • Highly polar material that strongly adsorbs polar compounds from non-polar matrices under normal-phase conditions
  • Economical material
  • For cleanup of polar impurities from non-polar samples
  • Typical applications include alcohols, aldehydes, amines, herbicides, pesticides, PCBs, ketones, nitro compounds, organic acids, and phenols

WelchromTM Florisil, made from magnesium silicate, is a highly selective SPE sorbent. Similar to silica, it is use for extraction of polar compounds, but is much adsorptive than silica. It is widely use to extracts polar compounds from non-polar solvent. The larger particle size of the sorbent enables fast flow for large sample volumes and therefore can be an attractive alternative to silica if the sample matrix is particularly viscous. Typical applications include organic chlorinated pesticide, PCBs, and PAHs. It is also included in AOAC and EPA methods.

  Article

Specification

Packing (pcs /bag)

Part No

Florisil

100mg/1ml

100

00515-20001

Florisil

200mg/3ml

50

00515-20004

Florisil

500mg/3ml

50

00515-20005

Florisil

500mg/6ml 

30

00515-20006

Florisil

1000mg/6ml

30

00515-20007

Florisil

10g / bottle

 

00515-20017

Florisil

100g / bottle

 

00515-20018

 

WelchromTM Florisil PR

  • Contains Na2SO4(upper layer) and Florisil (magnesium silicate; lower layer)
  • Bigger particle size- 60/100 mesh (150-200 mm); pesticide grade
  • Generally used to retain polar analytes
  • Excellent for removing/isolating polar compounds from organic matrices
  • A great option when more generally-used sorbents, such as C18, don’t perform specifically enough for your particular application

WelchromTM Florisil PR is a selective synthetic adsorbent of silica, magnesium and sodium sulfate, especially processed to give consistent results when used for clean-up and separation of chlorinated pesticide residues, amines, polychlorinated biphenyls (PCBs), ketones and organic acids prior to identification and measurement of by gas, thin layer, or paper chromatography. It meets the EPA 608 method.

  Article

Specification

Packing (pcs /bag)

Part No

Florisil PR

100mg/1ml

100

00516-20001

Florisil PR

200mg/3ml

50

00516-20004

Florisil PR

500mg/3ml

50

00516-20005

Florisil PR

500mg/6ml 

30

00516-20006

Florisil PR

1000mg/6ml

30

00516-20007

Florisil PR

10g / bottle

 

00516-20017

Florisil PR

100g / bottle

 

00516-20018

 

WelchromTM Alumina-N

  • Neutral polar alumina SPE sorbent(pH 6.5)
  • 50 - 200μm particle size for high extraction efficiency
  • Ideal for electron-rich compounds
  • Better high pH stability than bare silica

WelchromTM Alumina-N can adsorb molecules by interaction with the aluminum metal center, or by hydrogen bonding with the surface hydroxyl groups. The neutralized surfaceallows interaction with compounds whose heteroatoms are electronegative (e.g., N, O, P, S) or with an electron-rich, highly aromatic structure. The alumina surface tends to be slightly more stable under high pH conditions than bare silica. The small particle size range ensures high extraction efficiency. It is widely used in the sample preparation of Sudan and malachite green.

  Article

Specification

Packing (pcs /bag)

Part No

Alumina-N

100mg/1ml

100

00501-20001

Alumina-N

200mg/3ml

50

00501-20004

Alumina-N

500mg/3ml

50

00501-20005

Alumina-N

500mg/6ml 

30

00501-20006

Alumina-N

1000mg/6ml

30

00501-20019

Alumina-N

10g / bottle

 

00501-20017

Alumina-N

100g / bottle

 

00501-20018

 

WelchromTM Alumina-B

  • Basic alumina SPE sorbent (pH 8.5)
  • 50 - 200μm particle size for high extraction efficiency
  • Ideal for polar and cationic compounds
  • Better high pH stability than bare silica

WelchromTM Alumina-B is washed with basic solution; so its surface is negatively charged. It is ideal for extraction of polar or cationic compounds.

  Article

Specification

Packing (pcs /bag)

Part No

Alumina-B

100mg/1ml

100

00520-20001

Alumina-B

200mg/3ml

50

00520-20004

Alumina-B

500mg/3ml

50

00520-20005

Alumina-B

500mg/6ml 

30

00520-20006

Alumina-B

1000mg/6ml

30

00520-20007

Alumina-B

10g / bottle

 

00520-20017

Alumina-B

100g / bottle

 

00520-20018

 

WelchromTM Alumina-A

  • Slightly acidic alumina SPE sorbent (pH = 4.5)
  • 50 - 200μm particle size for high extraction efficiency
  • Ideal for polar and anionic compounds
  • Better high pH stability than bare silica

WelchromTM Alumina-A surface is slightly acidic with pH = 4.5. Adsorbent can be used as polar and middle-cation exchanger.

.

  Article

Specification

Packing (pcs /bag)

Part No

Alumina-A

100mg/1ml

100

00519-20001

Alumina-A

200mg/3ml

50

00519-20004

Alumina-A

500mg/3ml

50

00519-20005

Alumina-A

500mg/6ml 

30

00519-20006

Alumina-A

1000mg/6ml

30

00519-20007

Alumina-A

10g / bottle

 

00519-20017

Alumina-A

100g / bottle

 

00519-20018

 

WelchromTM Celite

  • Macroporous (302 ) with large pore volume
  • Chemically inert
  • Stable across a broad pH range: 1-13
  • 100 – 200 mesh particle size for high extraction efficiency
  • Very abroad application

WelchromTM Celite is a specially treated, chemically inert and pH stable, macroporous diatomite sorbent; It has broad applications, including pre-treatment of urine, whole blood, plasma, serum, gastric juice, amniotic fluid, feces and animal and plant tissue samples, environmental analysis and residual analysis (industrial waste, household waste and hospital waste), drug content analysis, traditional Chinese medicine analysis.

.

  Article

Specification

Packing (pcs /bag)

Part No

Celite

100mg/1ml

100

00521-20001

Celite

200mg/3ml

50

00521-20004

Celite

500mg/3ml

50

00521-20005

Celite

500mg/6ml 

30

00521-20006

Celite

1000mg/6ml

30

00521-20007

Celite

100g / bottle

 

00521-20018

 

3. WelchromTM Polymer-based SPE

WelchromTM polymer–based SPE is made from monodisperse polymer beads, which surface is modified by the Welch's unique surface modification and functionalization technology to produce various types of polymer SPE sorbents. WelchromTM SPE polymer beads have accurate particle size of 40 μm with a high degree of uniformity of particle size and pore size, excellent surface area, and the optimal bonding density of functional groups, which can meet high sensitivity analysis requirement for a wide variety of applications of acidic, neutral and basic compounds. WelchromTM polymer-based SPE currently includes five different sorbents to meet your needs: BRP, P-SCX, P-SAX, PS/DVB, and P-WAX.

 

WelchromTM BRP

  • Monodispersed polymer beads
  • Balanced hydrophobic and hydrophilic adsorbent surface
  • Most versatile SPE option
  • Appropriate for a broad range of samples, including weak acids, neutrals, and weak bases
  • Equivalent to Waters Oasis HLB, Agilent's OPT, and  Phenomenex Strata X
  • BRP is abbreviation of‘ Banlanced Reverse Polymer’.

WelchromTM BRP surface is modified by our proprietary surface modification technology. It has balanced hydrophobic and hydrophilic adsorbent surface, and is used to separate polar and non- polar substances. Its extraction capacity is 3-10 times of C18 bonded silica SPE. It is appropriate for a broad range of samples, including weak acids, neutrals, and weak bases, such as naproxen, ibuprofen, fenoprofen, indomethacin, caffeine, theobromine.

  Article

Specification

Packing (pcs /bag)

Part No

BRP

30mg/1ml

100

00522-20015

BRP

60mg/3ml

50

 00522-20009

BRP

150mg/3ml 

50

00522-20003

BRP

200mg/6ml

30

00522-20014

BRP

500mg/6ml

30

00522-20006

 

WelchromTM P-SCX

  • Ideal solid phase extraction for melamine analysis
  • Excellent retention for both basic and neutral compounds over a wide range of hydrophilicity
  • Inert to a wide variety of solvents
  • Equivalent to Waters Oasis MCX, Phenomenex Strata-XC

WelchromTM P-SCX polymeric resin is a sulfonic acid-modified divinyl benzene polymer with both ion exchange and reverse phase retention properties. As a result, the WelchromTM P-SCX resin exhibits excellent retention for both basic and neutral compounds over a wide range of hydrophilicity; examples including melamine, amphetamines, chlorpheniramine, and phencyclidine.

  Article

Specification

Packing (pcs /bag)

Part No

P-SCX

30mg/1ml

100

00523-20015

P-SCX

60mg/3ml

50

 00523-20016

P-SCX

150mg/6ml 

50

00523-20043

 

WelchromTM P-SAX

  • Excellent retention for both acidic and neutral compounds over a wide range of hydrophilicity
  • Inert to a wide variety of solvents

WelchromTM Strong Anion Exchange (SAX) polymeric resin is a mixed-mode, tertiary amine-modified divinyl benzene polymer that displays both anion exchange and reversed phase behavior. As a result, WelchromTM P-SAX resin exhibits excellent retention for both acidic and neutral compounds over a wide range of hydrophilicity, typically used for purification of acidic substances, such as tyrosine, estrone, adenine and nucleoside and so on, from alkaline and neutral impurities.

  Article

Specification

Packing (pcs /bag)

Part No

P-SAX

30mg/1ml

100

00524-20015

P-SAX

60mg/3ml

50

 00524-20016

P-SAX

150mg/6ml 

50

00524-20043

 

WelchromTM PS/DVB

  • Highly cross-linked polystyrene-divinyl benzene copolymer
  • High surface area (800m2/g) and high adsorption capacity; ideal for extracting polar compounds from aqueous solutions
  • Large particle size allows fast extraction speeds
  • Equivalent to Bond Elute LMS, Bond Elute PPL, SampliQ PS-DVB

WelchromTM PS/DVB is a highly cross-linked polystyrene/divinyl benzene copolymer resin with high surface area (800m2/g) and high adsorption capacity for rapid adsorption and separation of hydrophobic substances such as phenol, surfactants, non-B pyridine bromide, antibiotics, amino acids and peptides, etc. It is ideal for the extraction of polar analytes that are not adequately retained on a C18 or C8 sorbent. The nonselective characteristic of this sorbent is useful for screening applications where a broad range of analytes is to be extracted.

  Article

Specification

Packing (pcs /bag)

Part No

PS/DVB

30mg/1ml

100

00523-20015

PS/DVB

60mg/3ml

50

 00523-20009

PS/DVB

150mg/6ml 

50

00526-20043

 

WelchromTM P-WAX

  • Exhibits both anion exchange and reversed phase behavior
  • Wide pH range: can be ionized or neutral depending on pH of buffer solution

WelchromTM P-WAX is a weak anion exchange polymer resin with both anion exchange and non-polar hydrophobic properties. It is ideal for purification of acids, such as tyrosine, estrone, adenosine and nucleoside, etc.from basic and neutral matrix.

  Article

Specification

Packing (pcs /bag)

Part No

P-WAX

30mg/1ml

100

00525-20015

P-WAX

60mg/3ml

50

 00525-20016

P-WAX

150mg/6ml 

50

00525-20043

 

4) Specialty and Mixed Mode SPE:

WelchromTM SPE has four kinds of specialty and mixed adsorbents: GraphiCarb, GraphiCarb/NH2, C8/SCX, C8/SAX, and C18E/SiO2.

WelchromTM mixed-mode SPE sorbents consist two mixed stationary phases, and exhibit a variety of interaction mechanism for separation and purification of complex biological matrix, such as basic drugs and pesticide residues, etc., which cannot be easily washed or removed

 

Welchrom GraphiCarb

  • Graphitized carbon black (GCB)
  • Surface Area: 100 m2/g; Particle Size: 100/400 mesh
  • Generally used to retain polar analytes
  • Retention generally decreases as solvent becomes more polar
  • High affinity for organic polar and non-polar compounds from both non-polar and polar matrices, when used in reversed phase conditions
  • Optimized for pesticide analysis
  • A great option when more generally-used sorbents, such as C18, don’t perform specifically enough for your particular application Activated carbon has very adsorption capacity, but adsorption is so strong that it is almost irreversible, so it is not suitable for a SPE adsorbent.

WelchromTM GraphiCarb is Graphitized carbon black (GCB), which overcomes the disadvantage of irreversible adsorption of activated carbon, but also maintained the high adsorption capacity of the polar and non-polar organic compound; as a result, it has advantages of high purification ability, high sample recovery and high reproducibility. It is widely used for sample preparation of pigment and pesticides. In addition, since WelchromTM GraphiCarb is nonporous, it does not require analyte dispersion into solid phase pores and is able to reaches adsorption equilibrium much faster, allowing for rapid processing and the adsorption.

  Article

Specification

Packing (pcs /bag)

Part No

GraphiCarb

100mg/1ml

100

00517-20001

GraphiCarb

200mg/3ml

50

 00517-20004

GraphiCarb

250mg/6ml 

30

00517-20013

GraphiCarb

500mg/6ml

30

00517-20006

GraphiCarb

1000mg/6ml

30

00517-20007

GraphiCarb

10g / bottle

 

00517-20017

GraphiCarb

100g / bottle

 

00517-20018

 

WelchromTM C8/SCX

  • A optimized dual retention of both strong cation exchange and reversed phase behavior
  • Allow use of stronger washing solvent to remove impurities
  • Developed for superior selectivity/sample cleanup when isolating basic compounds from biological fluids
  • Dual retention mechanisms broadens retention for a range of neutral, basic, acidic and zwitterionic compounds

WelchromTM C8/SCX SPE is a C8 alkyl silica stationary phase and a strong cation exchange stationary phase mixed sorbent in optimized ratio, to provide a dual retention mechanism. The strong dual retention between the adsorbent and the analytes allows use of stronger cleaning and washing solvent and conditions to remove the impurities on the adsorbent.

  Article

Specification

Packing (pcs /bag)

Part No

C8/SCX

100mg/1ml

100

00556-11001

C8/SCX

200mg/3ml

50

 00556-11004

C8/SCX

500mg/3ml 

50

00556-11005

C8/SCX

500mg/6ml

30

00556-11006

C8/SCX

1000mg/6ml

30

00556-11007

 

WelchromTM C8/SAX

  • Ideal for non-polar and anionic compounds
  • Optimized for acidic drug analysis
  • Bimodal, non-polar and strong anion exchange

WelchromTM C8/SAX was developed specifically for the rapid and effective extraction of acidic drugs and metabolites from urine and other biological matrices. WelchromTM C8/SAX is a mixed-mode cartridge packed with non-polar C8 and strong anion exchange (SAX) sorbent. It has been optimized for acidic drugs such as 11-nor-delta-9-tetrahydrocannibinolcarboxylic acid, salicylic acid, ibuprofen, acetaminophen and others compounds that possess both non-polar and anionic characteristics.

 

  Article

Specification

Packing (pcs /bag)

Part No

C8/SAX

100mg/1ml

100

00557-11001

C8/SAX

200mg/3ml

50

 00557-11004

C8/SAX

500mg/3ml 

50

00557-11005

C8/SAX

500mg/6ml

30

00557-11006

C8/SAX

1000mg/6ml

30

00557-11007

 

WelchromTM GraphiCarb/NH2

  • Graphited carbon black and aminopropyl bonded silica gel mixed sorbent
  • Optimized for pesticide analysis

WelchromTM GraphiCarb/NH2 is a graphite carbon black and aminopropyl bonded silica gel mixed  sorbent, specifically for the pesticide residue analysis and extraction of complex matrix, such as removal of pigments, fatty acids and phenols, and extraction of organic phosphorus from tea.

  Article

Specification

Packing (pcs /bag)

Part No

GraphiCarb/NH2

250mg/250mg/6ml

30

00527-20010

GraphiCarb/NH2

250/250mg/6ml

30

 00527-20011

 

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