1.1 ,This test method covers the determination of the density, relative density, or API gravity of liquid petroleum products using portable digital density meters at test temperatures between 0 ,°,C and 40 ,°,C (32 ,°,F to 104 ,°,F). Its application is restricted to samples with a dry vapor pressure equivalent up to 80 ,kPa (11.6 ,psi) and a viscosity below 100 ,mm²/s (cSt) at the test temperature.