Abstract
It is well-known that the error of a measurement result can increase at each step of a laboratory procedure, as well as because of the sample character of partial measurements. To overcome these difficulties, close cooperation between hydrologists and analytical chemists is required in order to obtain reliable information about the composition and properties of natural waters, which are extremely unstable. The study focuses on details that are of importance for both the client-hydrologist and the performer—chemist-analyst. The article gives different variants of conclusions regarding the compliance or non-compliance with the established requirements. The cost of reliable measurements is calculated, and variants of optimization of enterprise’s payments for discharges are proposed. Recommendations are given to customers regarding the choice of a competent analytical laboratory.
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