QuEChERS 150 mg MgSO4, 25 mg PSA and 2.5 mg GCB, 2 mL Tube, 100/pk

This is clean-up tube used for the extract from step 1 in QUECHERS sample preparation. This d-SPE tube contains PSA and GCB for the removal of chlorophyl and caratenoids. QUECHERS (pronounced catchers) methods are used for multi-pesticide residue analyses in food. This is a 100 pack of tubes containing the d-SPE components.