Material: 150 mg MgSO4, 25 mg PSA Type: 2 mL Micro-Centrifuge Tubes Prefilled with dSPE Materials for Cleanup (1 mL Extract) Units: 100-pk. Volume: 2 mL Product Name: Q-sep QuEChERS dSPE Tubes Method: Original unbuffered, EN 15662, mini-multiresidue Sample Type: General fruits and vegetables (e.g., celery, head lettuce, cucumber, melon)