ph test meter
ph test meter, Total:3 items.
The international standard classification for "ph test meter" includes: .
The Chinese standard classification for "ph test meter" includes: .
CU-NC
- NC 90-13-13-1987 Metrological Assurance. Measurements with pH Meters. General Rules.
- NC 90-13-08-1984 Metrological Assurance. pH Meters. pH Regulating Solutions. Requirements for the Elaboration
- NC 90-13-14-1986 Metrological Assurance. pH Meters. Verification Methods and Means
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