- 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.