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| ASTM American Society For Testing and Materials | |
| ASTE The American Society of Test Engineers | ||
| A2LA - American Association for Laboratory Accreditation 5301 Buckeystown Pike, Ste 350 - Frederick, MD 21704 USA - - | ||
| NCSL Internatinnal (Metrology) | ||
| IEST Institute of Environmental Sciences and Technology | ||
| NETA InterNational Electrical Testing Association. | ||
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