State system for ensuring the uniformity of measurements. State verification schedule for means of measuring specific enthalpy and specific heat-conduction of solid frames in the range of temperature from 700 to 1800 K
Petroleum products and used oils. Determination of polychlorinated biphenyl (PCB) and related products. Part 1. Separation and determination of selected PCB congeners by gas chromatography (GC) using an electron capture detector (ECD)