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- SPE columns, CHROMABOND HR-XA, 85 µm, 1 mL/30 mg
State-of-the-art spherical polymer for highest demands in solid phase extraction. PS/DVB copolymer with quaternary ammonium modification for mixed-mode SPE with strong anion exchange and reversed-phase properties (MAX). Exchange capacity 0.25 meq/g, pKa ~ 18 and RP capacity 350 mg/g (caffeine in water). High-purity material with ideal flow properties and highest reproducibility. Allows highest reproducibility with extremely low blind values due to an optimized production process. Outstanding recovery rates especially for the enrichment of acidic (acids with pKa 2–8) analytes.
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Particle type
Fully porous particles (FPP)
Particle shape
Spherical
Endcapped
No
Brand
CHROMABOND
Filter element material
Polyethylene (PE)
Carbon content
Not available or proprietary
pH stability
1.0–14.0
Column volume
1 mL
Column shape
Open tubular syringe-shaped column with Luer tip outlet
Hardware
Polypropylene (PP) columns with polyethylene (PE) filter elements
Column type
SPE column
Selling unit
30 columns
Scope of delivery
30x (6x5 in aluminum bags each) SPE columns, certificate of analysis
Particle size
85 µm
Base material
PS/DVB copolymer
Method
Solid phase extraction (SPE)
Mode
Mixed mode (RP and Ion exchange (IEX))
Recommended application(s)
Phenolic acids
Recommended application(s)
Acids with pKa 2–8
Phase
HR-XA
Pore size
55–65 Å
Specific surface according to BET
850 m²/g
Surface chemistry
Hydrophobic spherical polystyrene-divinylbenzene copolymer (PS/DVB) with quaternary ammonium modification, very strong mixed mode anion exchanger (MAX)
Filling quantity
30 mg
Column volume/adsorbent weight
1 mL/30 mg
Recommended application(s)
Acidic active ingredients from strongly matrix-contaminated samples
Recommended application(s)
Acidic herbicides
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