The increase of standard density and the reduction of water content in the data of inspection on board have lowered the concern on the loss of standard volume.

Cleaning method for standard volume pipe and improvement of its process flow;

The measurement error and economic loss rising from standard volume pipe during dynamic measurement of crude oil were analysed and some solutions were proposed.

An improved hard-sphere model predicted rightly the changing trend of the standard partial molar volume of alkyl chain of amino acids with concentration of electrolyte,and confirmed the assumption that the sum of standard partial molar volumes of CH and CH3 groups is twice as many as the standard partial molar volume of CH2 group.

The apparent molar volumes, stan- dard partial molar volumes ( V2 s,φ ), standard partial molar volumes of transfer for the dipeptide from water to aqueous sodium acetate solutions (△tV ), the hydration number and volumetric interaction coefficients have been calculated.