pH buffer calibration solution powder accuracy is ±0.01pH, accurate and precise.
Suitable with most of pH meters, Ideal for Calibrating.
Individually wrapped to maintain freshness until use.
Easy to use: Mix the buffer powder with 250ML distilled water, put the pH meter in the solution and gently stir and wait a few seconds for the result. c
3 packets of pH 4.01 Solution powder,
3 packets of pH 6.86 Solution powder
3 packets of pH 9.18 Solution powder
solution valid 6 months and keep tight container and store fridge