SpectraPure® Standard Membranes are batch-tested versions of the SpectraSelect™ Membranes. They are not “rejects”, they just
haven’t gone through our rigorous individual testing procedures that the SpectraSelect go through. These membranes are standard
equipment in our SP, CHP, MPRO, MPDI RO/DI, and the MPDW Drinking Water Systems. The Standard Membrane is also available as a
replacement option for most competitors’ reverse osmosis systems.