TEMPERATURE COMPENSATION: Automatic 5 to 50°C / 41 to 122°F

or replacement parts

Regular pH testing helps identify spoilage

Fertilizer mixing and management

this NIST-traceable potassium chloride solution ensures fresh

Hanna Instruments Low Range Chromium VI Colorimeter Checker HC-HI749 hydroponic growing TEMPERATURE COMPENSATION: Automatic 5 toGet accurate water testing results with our simple handheld colorimeter. Our low range chromium VI colorimeter gives you more precise technology than your typical chemical test kit. Don't struggle to determine colors visually, our handheld colorimeter eliminates the hassle of matching to a color chart by providing a direct chromium VI result digitally. Our portable handheld colorimeter is easily carried in your pocket. Simple, one button operation