Is the InfraCal Model HATR-T2 EPA Approved for oil in water monitoring?
The only EPA approved method for infrared is for a Freon 113 extraction. It took close to 15 years for the EPA to approve the hexane/gravimetric method once the Montreal Protocol determined that the use of Freon 113 would be phased out. Funding for the approval of an infrared method with a solvent other than Freon 113 is not currently a priority for the EPA. The correlation between the infrared method and the hexane/gravimetric method is typically very accurate, as can be substantiated by the fact there are over 2,000 InfraCal TOG/TPH Analyzers in use for oil and grease monitoring worldwide. There is an ASTM Method D-7066 oil in water method for extraction with the solvent S-316 and use with the InfraCal Model CVH.