Historical
DIN ISO 2137:1997
Petroleum products - Lubricating grease and petrolatum Determination of cone penetration (ISO 2137:1985)
The document describes several methods for the empirical estimation of the consistency of lubrication greases and petrolatum by measuring the penetration of a standard cone. It describes the calculation of results precision data and the test report.
Deutsches Institut für Normung [din]