Water collected specifically for these tests must not be preserved with chemicals.
Below is an overview article discussing the significance and application of this interstate standard. gost 3351 74 skachat besplatno pdf
Detailed photometric methods to determine the transparency and hue of the water using a platinum-cobalt scale. Water collected specifically for these tests must not
Methods to measure the presence of suspended particles (such as silt, clay, or organic matter) that interfere with light passing through the water. 📋 Strict Sampling Rules gost 3351 74 skachat besplatno pdf
🚰 Understanding GOST 3351-74: Drinking Water Quality Analysis