This page contains a link to the Standard Operating Procedures for the Determination of Filter Light Absorption in Chemical Speciation Network (CSN) Samples.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- UCD SOP #277: Optical Absorption Analysis of PM2.5 Samples (PDF)(11 pp, 682 K)
- UCD TI #277A: HIPS Logs, Tray Checks, and Transferring Filters (PDF)(9 pp, 617 K)
- UCD TI #277B: Performing HIPS Analysis (PDF)(10 pp, 857 K)
- UCD TI #277C: Quality Assurance/Quality Check of Analysis of PM2.5 Loaded Filters Using Hybrid Integrating Plate/Sphere (HIPS) Method for Measuring Light Absorption (PDF)(12 pp, 664 K)