RO Rejection Rate: What It Means, How to Measure It, and What Decline Signals | AMPAC USA
Rejection rate is the number that tells you whether your RO membrane is actually working. It measures what percentage of a contaminant in the feed…
Water Purification
Expert insights on water treatment, reverse osmosis, and purification systems
Water Purification
How Reverse Osmosis Works: The Complete Technical Guide | AMPAC USA
Reverse osmosis sounds complicated. The underlying principle isn’t. Water is pushed through a membrane so fine it passes water molecules and blocks nearly everything dissolved
USP Purified Water TDS Requirements and How Pharmaceutical-Grade Reverse Osmosis Systems Meet Them
Pharmaceutical makers don’t get to round up on water quality. USP Purified Water has to hit strict conductivity limits every single time – because total
Pharmaceutical and Laboratory Water Purification: RO Systems Guide | AMPAC USA
Pharmaceutical and laboratory water purification operates under a different set of requirements than any other application. The water isn’t just treated for taste, scale prevention,
Water Softener vs Reverse Osmosis: Which Do You Need? | AMPAC USA
Water softeners and reverse osmosis systems are often confused as doing the same thing. They don’t. A water softener removes hardness (calcium and magnesium) through
Chromium-6 in Drinking Water: Reverse Osmosis Removal Guide | AMPAC USA
Chromium-6 (hexavalent chromium, Cr(VI)) became nationally known after the Hinkley, California groundwater contamination case documented in the Erin Brockovich story — but it’s a widespread
Iron in Well Water: Does Reverse Osmosis Remove Iron? | AMPAC USA
Iron is one of the most common and most disruptive water quality problems for private well owners and facilities drawing from groundwater. It stains fixtures
Fluoride Removal by Reverse Osmosis: Does RO Filter Fluoride? | AMPAC USA
Fluoride in drinking water is a case where the dose determines the effect. At low concentrations (0.7 mg/L — the current US public water fluoridation
Nitrate Removal by Reverse Osmosis: Well Water Treatment Guide | AMPAC USA
Nitrates are one of the most common groundwater contaminants in the United States, particularly in agricultural regions where nitrogen fertilizers and animal waste enter the
Lead in Drinking Water: How Reverse Osmosis Removes Lead | AMPAC USA
Lead doesn’t belong in drinking water at any concentration. The EPA’s current action level is 15 parts per billion (ppb), but the agency’s own Maximum