25 Pa. Code § 139.32
(a) Sampling and analytical techniques which may be used directly or employed as reference standards against which other methods may be calibrated shall be as follows:
| Contaminant | Sampling Method | Analytical Method |
| Settled particulates (total) | Open top cylinder (6) | Gravimetric (6) |
| Beryllium | High-volume filtration (7) | Spectrographic (7) |
| Flourides (total soluble, as HF) | Filtration plus gas absorption (9) | Thorium-alizarin lake titration (9) |
| Hydrogen sulfide | Gas absorption (18) | Methylene blue method (18) |
The provisions of this § 139.32 adopted March 3, 1972, effective March 20, 1972, 2 Pa.B. 383; amended November 25, 1994, effective November 26, 1994, 24 Pa.B. 5899; amended September 4, 1998, effective September 5, 1998, 28 Pa.B. 4525. Immediately preceding text appears at serial pages (239783) to (239784).
This section cited in 25 Pa. Code § 139.31 (relating to general); and 25 Pa. Code § 139.33 (relating to incorporation of Federal procedures).