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Membrane Solutions LLC
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Suitable for retenti on of neutral and cationic co rrp cunds
• Strong hydrogen b ending is also effective forpolar cations
• Exhibits Lewis base properties, mo re retentive towards
electron-donors corrp ccnds
• The surface has a slightly anionic nature thrcogh pretreatment
with
acidic solutions
12Sfllll
Silica Base
irregular shaped •
Basic pH: -10.0
(BrockrnanAct I)
Average Partical Size
Chrompure Alumina-B
Chrompure Alumina-N
Neutral pH: -7.5
(Brockman Act. I)
Average Partical Size
125l-lill
Silica Base
irregular shaped
• Extremely polar sorbent, similar t o silica
• Mer-estable under high pH conditions than unb onded silica
• An
electrically neutral surface retentive fer electron-rich
corrp ccnds like arcmatic species and aliphatic amines, and
corrp omds with electronegative grcup like oxygen,
phosphcrus and sulfur atcms
• Extrat both nonpolar and polar ccmpounds from aqueous and
nonaqueous matrics respectively
Chrompure Carbon
GCB
Sorbent:
laminated structure
graphitized caro m
Average Partical Size
120-400l-lill
• H igher and rrore stable recovery rates in extracting polar
substance, like cr ganolchlcrine , crganophosphcrus and
nitrogen pesticides
• Excellent performance in oganic extraction and purification
• Extremly rapid extract prcccessing due to the few-porosity
5
Organic Copolymer Base
Chrompure PL
S
~
Chrompure PCX
-S03H
Chrompure PAX
I.
-N~
1
particle size:
au.i oopm
pore size:
70-90 A
area:
600-S 00m2
particle size:
au. ioopm
pore size:
70-90 A
area:
600-S 00m2
particle size:
ao.t oopm
pore size:
70-90 A
area:
6OO-SCQnZ
• Copolymer of polystyrene! divinylbenzene, contained both hydrophilic
and hydrophobic radicals
• Good retenti on on polar and n co-polar molecule hydrophilelipophile
balance
• PLS has higher stability and widder pH range P opular ultilised in food
• Sulfcnic acid group bonding polystyrene!divinylbenzene copolymer is
mixed strong cation exchange sorbent Both cation exchange and reverse
phase retention node, suitable for carboxylic acid compounds pKa
between 2-8, mainly amcnic corrp ccnds
• Quaternary ammonium group b onded copolymer is mixed anion exchange
and reverse phase sa-bent
• Excellent extraction t o purified acid, carboxy acid ccrnpounds, pKa
between 2-8
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