Russian standards PDF
State system for ensuring the uniformity of measurements. pH-meters. Verification procedure
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State system for ensuring the uniformity of measurements. State verification schedule for noise spectral density means of measuring within the frequency range from 0,002 to 178,3 GHz
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State system for ensuring the uniformity of measurements. Means of measuring spectral density of radiance, spectral density of radiant intensity and spectral density of irradiance in the wavelength range of 0,2-25,0 mkm. Verification procedure
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State system for ensuring the uniformity of measurements. Instruments for measurement power and irradiance in the wavelength range from 10 to 30 nm. Verification procedure
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State system for ensuring the uniformity of measurements. State verification schedule for measuring instruments of the phase shift angle between two electric signals in the range of frequencies from 0,1 MHz to 65 GHz
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State system for ensuring the uniformity of measurements. Permeation tubes for Sulfur Dioxide, Hydrogen Sulfide, Nitrogen Dioxide, Chlorine, Hydrogen Chloride, Ammonia. Verification method
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