Water quality

Checker for marine nitrate LR

HI781

Alkalinity Checker for drinking water

HI775

Seawater Alkalinity Checker colorimeter: Range 0 to 300 ppm (mg/l)

HI755

Seawater Alkalinity Checker colorimeter: Range 0.0 to 20.0 dKH

HI772

Nitrite LR Checker (0-600 ppb)

HI707

Nitrite ultra low range Checker: Range 0 to 200 ppb

HI764

Ammonia LR Checker, 0.00-3.00 ppm

HI700

Calcium Hardness Checker

HI720

Marine calcium Checker colorimeter

HI758

Phosphate low range Checker colorimeter: Range 0.00 to 2.50 ppm (mg/l)

HI713

Phosphorus ultra low range Checker colorimeter: Range 0 to 200 ppb

HI736

Iron Checker colorimeter: Range 0.00 to 5.00 ppm (mg/l)

HI721