Spectrapure Standard 90-GPD RO Membrane (MEM-0090) - Spectrapure $39.99 SpectraPure Standard 90-GPD Batch-Tested TFC RO Membrane, 2in dia x 12in LFEATURES: - Minimum Rejection = 96%. Stabilized Salt Rejection: 98%. - The membranes produce the rated GPD ± 20% at 60 psi. (Permeate flow and salt rejection based on the... Add to Cart