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Koch High Rejection Membranes

Koch High Rejection Membranes


Koch/Fluid Systems Thin Film High Rejection Reverse Osmosis Membranes

KOCH HR Series Have been discontinued. Please see Recommended Replacement Membrane Elements

Obsolete KOCH Membrane Model Recommended Replacement Specifications for Obsolete Models - For Reference Only
Size Permeate Flow Chloride Rejection
(Dia." x L") GPD m³/d
2540HR M-T2540A 2.5×40 750 2.8 99.40
4040-HR-T M-T4040A 4×40 2,270 8.6 99.55
4040-HR M-B4040A 4×40 2,270 8.6 99.55
8040-HR-375 Still Offered by Koch 8×40 10,200 38.6 99.50
8040-HR-400 8×40 11,000 41.6 99.50

Test Conditions: 2,000 mg/l NaCl (700mg/l for 2.5”) solution at 225 psi (1,550 kPa) applied pressure, 15% recovery, 77°F (25°C) and pH 7.5 2540HR & 4040-HR-T are tape-wrapped elements. 4040-HR and 8” elements are fiberglass warapped.


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