This tester features an open junction

Alkaline pH boost — raises water pH by up to +2

The instrument's high accuracy and simple operation gives reliable results each and every time

Measures conductivity (EC) and total dissolved solids (TDS) with automatic temperature compensation

Hanna HI746 Iron Checker | Low Range Digital Colorimeter 0-5 mg/L MW12 This tester features an openHanna HI746 Low Range Iron Colorimeter Checker Professional Fe Water Quality Testing Detect and measure low concentrations of iron with laboratory precision using the Hanna HI746 Low Range Iron Colorimeter Checker. This portable, professional grade instrument measures total iron (Fe) from 0 to 5. 00 mg L (ppm) with exceptional 0. 04 mg L accuracy, making it essential for drinking water quality testing, pool maintenance, aquarium monitoring, and