25 single-use sachets of 20 ml
Calibration standard solution at pH 4.01 manufactured in accordance with ISO 3696 / BS3978 standards using pure salts, deionized water, certified balances and Class A glass materials, in a temperature controlled environment by certified thermometers. The reported values have an accuracy of +/- 0.01 pH at 25 ° C and refer to NIST standards (Standard Reference Materials - SRMs).
Convenience of the disposable sachet:
- 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
Each sachet has a lot number and an expiration date
|| 4.01 pH
|| Hanna Instruments
Recensioni per GroLine - Solution pH 4 - 25 sachets of 20 ml
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