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Water collected specifically for these tests must not be preserved with chemicals.

🚰 Understanding GOST 3351-74: Drinking Water Quality Analysis gost 3351 74 skachat besplatno pdf

To ensure high-precision results, the standard dictates rigid rules for handling samples: The sample volume must be at least Water collected specifically for these tests must not

Detailed photometric methods to determine the transparency and hue of the water using a platinum-cobalt scale. gost 3351 74 skachat besplatno pdf