General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 26812-2011
Scope
This standard specifies the reagents, equipment, procedures, etc. used for the preparation of ion selective electrode calibration solutions. This standard applies to the preparation of calibration solutions for selective electrodes for sodium ions, chloride ions, fluoride ions, and nitrate ions, and ammonia gas-sensing electrodes. This standard is also applicable to the preparation of the corresponding ion concentration meter calibration solution.
GB/T 26812-2011 history
2011GB/T 26812-2011 Preparation method of reference solutions for the measurement of ion selective electrodes