IPW Industries Inc (ISO-4PK) Reverse Osmosis RO 4 Filter Replacement Set Inline Fitting Connection:1/4" NPT Ideal for calibrating instruments used

Ideal for calibrating instruments used in laboratory water testing

though testing is recommended for wells to ensure appropriate pre-treatment if iron

Air Gap (AG) or Non-Air Gap (NAG)

Incoming water passes through densely packed strong acid cation resin beads inside the 20"x4

A connector that's slightly too long is easier to work with than one that's under tension

IPW Industries Inc (ISO-4PK) Reverse Osmosis RO 4 Filter Replacement Set Inline Fitting Connection:1/4" NPT Ideal for calibrating instruments usedThis complete 4 piece replacement filter set restores full filtration performance to standard residential reverse osmosis systems including ISO RO5, ISO RO4DI, W 525, and W 425 models. Each kit includes one 5 micron sediment prefilter, one granular activated carbon (GAC) prefilter, one carbon block prefilter (5 or 10 micron), and one inline post carbon filter for final polishing. SPECIFICATIONS Complete Annual Service Kit Filter Dimensions 10" 2. 5"