Tucker Treating Chemicals has at its disposal a laser particle counter for QA/QC testing of fluids after it has been filtered. This is used for testing the cleanliness of the HW525 and Methanol to ensure it is to the NAS 6 standard after it has been filtered.
This can also be done manually using a microscope however the human error can be reduced by the use of this equipment. TTC currently has the contract for supplying BHP Billiton with HW525 and the NAS 6 standard must be met prior to shipment of the product.