Step 6. c. Find the inner end with 2 O-rings, cut open the end of the sealed bag, use it to hold
the RO membrane to avoid contamination, and firmly insert the membrane into the housing
until the outer end without the O-ring is entirely inside the housing. See Figure above.
Step 6. d. Before twisting the housing cap back on, check that the O-ring is evenly snagged on
the membrane housing. Hand tighten it, then tighten up for about 1/4 – 1/2 turns using a
small plastic housing wrench, but do not over-tighten. DO NOT reconnect the tubing to the
inlet on the cap at this point (this will be done in the system startup).
Step 7: Tubing Hook Up
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