WATER QUALITY • PURITY BENCHMARKS

Under-Sink RO Filter & Contaminant Rejection Index

Pore size ratings, chlorine/lead removal efficiencies, and annual operating costs audited across reverse osmosis media.

⚡ VERIFIED INTERACTIVE CALCULATOR

RO Permeate Purity & Salt Rejection Calculator

Calculate permeate output TDS, overall membrane salt rejection efficiency, and detect exhausted thin-film composite (TFC) membranes.

Tap Feed Water TDS (PPM): 340 ppm

Membrane Rejection Rating (%): 96 %

CALCULATED VALUE

AUDITED STANDARDS

Peer-reviewed operational procedures executed by certified field specialists.

MEMBRANE AUDIT

Auditing reverse osmosis efficiency using dual-probe dissolved solids meters.

01. Collect 100mL of cold tap water directly from sink aerator; measure baseline feed TDS.
02. Purge RO faucet for 60 seconds; fill clean glass and measure permeate TDS.
03. Calculate rejection percentage: ((Feed - Permeate) / Feed) * 100. Must exceed 92%.

SANITIZATION PROTOCOL

Eliminating anaerobic bacterial biofilm from internal butyl rubber bladders.

01. Turn off cold water feed saddle valve; drain pressurized holding tank completely.
02. Remove pre-filters; inject 10mL unscented 5.25% sodium hypochlorite into stage 1 housing.
03. Re-pressurize system; allow tank to sit for 3 hours, then flush two complete tanks to drain.

PRESSURE PROTOCOL

Ensuring minimum 50 PSI feed pressure across polyamide membranes.

01. Install liquid-filled 0-100 PSI pressure gauge before RO membrane inlet.
02. If static municipal pressure reads below 45 PSI, install 24V Aquatec booster pump.
03. Verify permeate-to-waste ratio drops from 4:1 down to efficient 1.5:1.

SPECIFICATION DATABASE

Audited field parameters, technical tolerances, and benchmarks.