Color Disc for measuring Iron FerroVer®, 0-1 mg/L. Used in test kit Model IR-18A (Prod. No. 146500). The most accurate visual test kit method, Hach color discs provide fast, accurate comparisons

Color Disc for measuring Nitrate Nitrogen, 0-1, 0-10 mg/L. Used in test kit Model NI-14 (Prod. No. 1416100), Nitrate Education Test Kit (Prod. No. 1416133), and Stream Survey Test Kit (Prod. No. 27120

Large 1600-grain water softener, without resin. Capacity nearly double that of most softeners.For use with AD-16E Test Kit., P/N-148410.

Demonstration softener with convenience features. Body of clear polycarbonate plastic. White elliptical base helps prevent upset while in use. Both ends extra thick, white polycarbonate. Quick connect

Plastic, portable demineralizer with hose includes special faucet adapter, plug, and resin. Used in Model 15-E Water Conditioning Demonstration Kit (Prod. No. 148201).