Seamless and welded ( except submerged arc-welded) steel tubes for pressure purposes. Ultrasonic testing for the verification of hydraulic leak-tightness
Fat and oil derivatives. Fatty acid methyl ester (FAME). Determination of Ca, K, Mg and Na content by optical emission spectral method with inductively coupled plasma (ICP OES)
State system for ensuring the uniformity of measurements. State special standard and all-union verification schedule for means measuring instruments of variable temperature of water medium in the range of pulsation amplitudes of temperatures within 0,01 - 3 K at the pulsation frequencies from 0,005 to 50 Hz, at background temperature from 270,15 to 380,15 K and at water flow velocity from 0,5 to 20 m/s
