CALIBRATION SOLUTION 20ML PH 4.01 -SACHET
It is a standard pH 4.01 calibration solution produced in accordance with ISO 3696 / BS3978 standards using pure salts, deionized water, certified scales and Class A glass materials in a temperature controlled environment with certified thermometers. The values shown have an accuracy of +/- 0.01 pH at 25 °C and refer to the NIST (Standard Reference Materials - SRMs) standards.
• Ideal for users who do not calibrate the instrument frequently
• Ideal for use in the field
• Each sachet contains fresh solution
• The package protects the solution from UV rays that could alter the value of the buffer.
The solution contains no dyes which can stain the reference cell of a pH electrode.
Accuracy pH ± 0.01 pH
PH value @ 25 ° C 4.01