State system for ensuring the uniformity of measurements. Measuring electrodes for oxidation reduction potential determination (ORP). Verification procedure
System of standards on information, librarianship and publishing. Representation of extended Latin alphabet for information interchange on magnetic tapes
Methodology and metrological support of environmental management, monitoring and control systems. Systems for automatic control and accounting of emissions and discharges of pollutants at nitrogen fertilizer production facilities. Basic requirements
€25
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