YSI Luminescent Dissolved Oxygen Sensors Meet ASTM D888-09 Test Method

On September 23, 2010, the U.S. EPA's proposed changes to ASTM International D888-09 Standard Test Methods for Dissolved Oxygen in Water were published to the Federal Register under Clean Water Act 40 CFR part 136. The proposed rules are open for comments until November 22, 2010.

The proposed changes to ASTM D888-09 include the addition of Test Method C for the use of luminescent-based optical sensors for determining dissolved oxygen (DO) between 0.5-20 ppm in influent, effluent, and ambient water testing. The method may also be used for compliance measurements for Biological Oxygen Demand (BOD) and Carbonaceous Oxygen Demand (CBOD) testing.

YSI's optical dissolved oxygen sensors—the ProOBOD™, ProODO®, and ROX™—meet the ASTM D888-09 method requirements.

If the method is approved by the EPA in late 2010 or early 2011, then YSI sensors may be used for all EPA-regulated NPDES, BOD, and CBOD measurements without the need to contact a regional Alternative Test Procedure (ATP) coordinator for interim approval.