QuEChERS 1200 mg MgSO4, 400 mg PSA and 400 mg C18, 15 mL Tube, 50/pk

This is clean-up tube used for the extract from step 1 in QUECHERS sample preparation. This d-SPE tube contains PSA and C18 for cleaning up fatty produce and cereals. QUECHERS (pronounced catchers) methods are used for multi-pesticide residue analyses in food. This is a 50 pack of tubes containing the d-SPE components.