This unit from Parkes Scientific is designed for the determination of vapour pressure using a manual apparatus according to ASTM D7975 specifications. It is used to accurately determine the vapour pressure of crude oils exerted in a manually created vacuum. Suitable for testing samples that exert a vapour pressure between 25 kPa and 180 kPa at 37.8oC and between vapour to liquid ratios of 4:1 to 0.25:1. Sample pressure ranges up to 500kPa, however precision and bias statements have not been determined up to 500kPa.
Note: this unit is not intended for custody transfer measurements as per ASTM D6377.