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SPE
CHROMABOND® SA
Benzenesulphonic acid modified silica cation exchanger for SPE (SCX)
Base material silica, pore size 60Å, particle size 45µm, specific surface 500m²/g, pH stability 2 to 8, benzenesulphonic acid modified silica, strongly acidic cation exchanger (capacity ~ 0.5meq/g). Adsorbent with hydrophobic and Π-Π interactions (benzene ring). Ion exchange of organic compounds from aqueous matrix. Elution of interesting compounds with solvent systems, which compensate the ionic and nonpolar interactions, e.g. methanolic HCl....
CHROMABOND® SA/SiOH
Combination phase for SPE analysis of PCB
Special combination phase:
SA: strongly acidic cation exchanger based on silica with benzenesulphonic acid modification.
SiOH: unmodified silica for removal of polar compounds.
Recommended application: extraction of PCB from waste oil (hexane extract)....
CHROMABOND® SB
Quaternary ammonium modified silica anion exchanger for SPE (SAX)
Base material silica, pore size 60 Å, particle size 45 µm, specific surface 500 m²/g, pH stability 2 to 8. Silica modified with quaternary amine. Strongly basic anion exchanger (capacity ~ 0.3 meq/g). Not suited for very strong anions such as sulphonic acids, because these are difficult to elute....
CHROMABOND® SiOH-H2SO4/SA
Combination phase for SPE analysis of PCBs
H2SO4: H
2SO
4-impregnated silica phase for oxidation of accompanying compounds to ionic and/or polar compounds.
SA: strongly acidic cation exchanger based on silica with benzenesulphonic acid modification for removal of ionic and sulphur-containing compounds....
CHROMABOND® XTR
Kieselguhr phase for liquid-liquid extraction
Base material coarse-grained kieselguhr, large pore size, high pore volume, constantly high batch-to-batch quality, pH working range 1 to 13.
Application: liquid-liquid extraction of highly viscous aqueous solutions such as physiological fluids (blood, plasma, and serum) in clinical chemistry, dyes in textiles, environmental and food analysis....
CHROMAFIL® MULTI 96 filter plates
96-well polypropylene plates for simultaneous filtration of 96 samples
Advantages of this high-throughput system are:
- economical by saving time and solvent
- use of multi-channel pipettors facilitates liquid transfer steps
- readily adaptable to all common automated/robotic handling systems
- minimised dead volume (≤ 40µl)
- membrane materials correspond to the respective CHROMAFIL® syringe filters
QuEChERS adsorbent CHROMABOND® Diamino / PSA
QuEChERS method and pre-mixes
Within a few years after its devleopment by Anastassiades et al. the QuEChERS method has gained a leading position for determination of pesticide residues in food by GC-MS or LC-MS allowing rapid and cheap clean-up of strong matrix-contaminated samples.
Standard clean-up of food samples...