Hanna HI70007P 7.01 PH Buffer Solution 25 X 20 ML Sachets

The single dose sachets are really handy with each sealed sachet holding just the right amount of solution. The pH 7.01 buffer solution in quick and easy to use 20ml sachets is one of the most commonly used buffer solutions.

Hanna Free and Total Chlorine CAL Check Standards for HI97701

The HI97701-11 Free and Total Chlorine CAL Check. Standard value of 1.00 ±0.03 mg/L (ppm) free and total chlorine @ 25°C. The expected reading from the B standard is pH 7.0 ±0.1 @ 25°C. CAL Check» standards with certificate.