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ASTM
D3867-16(2021)e1
Standard Test Methods for Nitrite-Nitrate in Water
2021
11
ASTM Vol.11.01 (2023)
Both test methods use identical reagents and sample processing. The only difference between the two methods is that one test method is automated and the other is manual. The ranges and interferences are identical. The automated test method is preferred when large numbers of samples are to be analyzed. The manual test method is used for fewer samples or when automated instrumentation is not available...