---
kind: "section"
citation: "10 C.F.R. § 35.60"
title: "10"
number: "35.60"
heading: "Possession, use, and calibration of instruments used to measure the activity of unsealed byproduct material."
url: "https://uscodex.org/cfr/10/35.60"
---

# §35.60. Possession, use, and calibration of instruments used to measure the activity of unsealed byproduct material.

- (a) For direct measurements performed in accordance with [§ 35.63](/cfr/10/35.63.md), a licensee shall possess and use instrumentation to measure the activity of unsealed byproduct material before it is administered to each patient or human research subject.
- (b) A licensee shall calibrate the instrumentation required in [paragraph (a)](#a) of this section in accordance with nationally recognized standards or the manufacturer's instructions.
- (c) A licensee shall retain a record of each instrument calibration required by this section in accordance with [§ 35.2060](/cfr/10/35.2060.md).

## Notes

### Authority

Authority: Atomic Energy Act of 1954, secs. 81, 161, 181, 182, 183, 223, 234, 274 (42 U.S.C. 2111, 2201, 2231, 2232, 2233, 2273, 2282, 2021); Energy Reorganization Act of 1974, secs. 201, 206 (42 U.S.C. 5841, 5846); 44 U.S.C. 3504 note.

### Source

Source: 67 FR 20370, Apr. 24, 2002, unless otherwise noted.