State system for ensuring the uniformity of measurements. State special standard and all-union verification for means measuring absolute pressure within the range of 2,7x10 in 2 degree to 4000x10 in 2 degree Pa
State system for ensuring the uniformity of measurements. Standard reference data. Parahydrogen, liquid and gaseous. Density, enthalpy, entropy, isochoric, isobaric heat capacities and speed of sound at temperatures from 14 K up to 1000 K and pressures up to 100 MPa
