Environmental Express SPE, 5.5 Gram Na2SO4 Drying Cartridge, 50/Pk, G1065By Environmental Express $132.95 | PK Quantity discounts available QuantityPrice Product #: 705755Mfr. Part #: G1065Out of Stock - Ships in 5-10 Days Quantity -+ Add to Cart Free Ground Shipping On All Orders Over $1500!*Conditions Apply* Details Description Anhydrous Na2SO4 cartridges for use with the Environmental Express StepSaver. Features Drying cartridge for solid phase extr... DetailsBackDescription Anhydrous Na2SO4 cartridges for use with the Environmental Express StepSaver. Features Drying cartridge for solid phase extraction Product Specifications Weight 1.0000 California residents see Prop 65 WARNINGS