---
kind: "section"
citation: "40 C.F.R. § 60.3"
title: "40"
number: "60.3"
heading: "Units and abbreviations."
url: "https://uscodex.org/cfr/40/60.3"
---

# §60.3. Units and abbreviations.


Used in this part are abbreviations and symbols of units of measure. These are defined as follows:

- (a) **System International (SI) units of measure—**
- (b) **Other units of measure—**
- (c) **Chemical nomenclature—**
- (d) **Miscellaneous—**

## Notes

### Amendments

[42 FR 37000, July 19, 1977; 42 FR 38178, July 27, 1977]

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.

### Amendments

[42 FR 37000, July 19, 1977; 42 FR 38178, July 27, 1977]