Empty columns CHROMABOND®, PP
Empty CHROMABOND® column (PP) for SPE, one PE-filter element is already inserted in the column.
Extraction kits Copure® QuEChERS
Extraction and clean-up mixtures for sample preparation in the pesticide analysis of vegetable foodstuffs according to EN 15662 using GC/MS or LC/MS after acetonitrile extraction and purification using the dispersive SPE-QuEChERS method.The samples are first extracted with Mix A. Purification is done with one of the following mixtures:Mix B (Clean-up mixture for fruits and vegetables with low fat content, e.g. apples, strawberries)Mix C (Clean-up mixture for fruits and vegetables with high fat content, containing oil/wax, e.g. avocados)Mix D (Clean-up mixture for moderately chlorophyll/carotenoid-containing fruits and vegetables, e.g. carrots, salad)Mix E (Clean-up mixture for fruits and vegetables with high chlorophyll/carotenoid content, e.g. sweet peppers, spinach)If required, add ceramic homogenising beads for better mixing.Mix A contains a bag with the required amount of mixture and a 50 ml empty tubeMix B, C, D and E are pre-weighed into a 15 ml tube
QuEChERS adsorbent CHROMABOND® Diamino / PSA
QuEChERS method and pre-mixesWithin 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 samples10 g sample are homogenised with 10 ml acetonitrile. After adding the internal standard the sample is shaken with 4 g MgSO4 and 1 g NaCI and afterwards centrifuged. 1 ml of the supernantant is spiked with 25 mg CHROMABOND® Diamino and 150 mg MgSO4 and shaken again. After centrifugation the supernatant is injected into the GC/MS.Special silica phase for determination of pesticides in food samples with primary and secondary amine functions (PSA).Particle size 45 µm, specific surface 500 m2/g, pH-stability from pH 2 to 8.
SPE columns, CHROMABOND PFAS
Special phase for SPE analysis. For enrichment of PFAS from water, textiles and sediments (contaminated soils). Polymeric combination phase with weak anion exchanger, highly porous, spherical particles.