Package assembly for piperazine-based membranes
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United States of America Patent
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Jan 2, 2007
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N/A
app pub date -
Oct 5, 2001
filing date -
Oct 5, 2001
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Abstract
A package assembly comprising a sealed water-impermeable bag enclosing: a spiral wound filtration element comprising a piperazine-based membrane, and an aqueous solution comprises a substantially non-oxidizable buffer having capacity to sequester at least 0.0025 moles per liter of hydrogen ions. The assembly preferably further includes a reducing agent. The assembly provides improved preservation for piperazine-based membranes and elements incorporating such membranes.
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