The list of laboratories and testing capabilities provided here is not a list of “approved labs” but is provided by the test laboratories for awareness to the grease industry.
When submitting manufacturer’s data for HPM certification on Form HPM03, the data can be generated internally by the manufacturer or from any other lab that the manufacturer deems reputable.
For GC-LB audit submissions, NLGI requests that an appropriate size sample of the grease, from a commercial production batch, be sent to an independent laboratory of your choice for verification of the following tests for compliance with ASTM D-4950 requirements.
