20pcs PH Buffer Solution Powder for Precise Calibration of pH Meter pH Calibration Powder Solution 6.86,4.01 9.18

Feature:

【High Accuracy】: pH tester calibration pH tester calibration solution accuracy is ±0.01pH.

【Compatibility】: Suitable with most of pH meters, Ideal for Calibrating.

【Good Quality】: Produced with material. Sealed by durable moisture-proof individual packet.

【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.

【20 Packets】: 7pcs pH4.01 Solution powder, 7pcs pH6.86 6pcs 9.18 Solution powder, cost-effective and flexible for using

Package Include:

20pcs x pH tester calibration