HI700044P Pool Line pH 4.01 buffer sachets are a premium quality buffer used to calibrate pH meters used to measure the water quality of swimming pools and spas. The solution is packaged in a convenient disposable packet and is ideal for users that perform infrequent calibrations. Each time a packet is opened it is as fresh as the day it was produced.
- 25 sachets of buffer with 20 mL of solution
- Accuracy of ±0.02 pH @ 25℃
- 5 year shelf life for unopened sachets