These BS 718 hydrometers are specifically designed for the testing of oil and petroleum related products as specified by the Institute of Petroleum (IP). The sub-series L50SP and M50SP are limited to the low surface tension category.
A UKAS calibration certificate is required when the instrument is to be used as a reference master against which working instruments are checked on site, scale increments of no greater than 0.0005 kg/litre.
Part Number Description:
Hydrometer BS718 M50SP @15 deg C – UKAS Certificate