16 CFR § 1262.4 - Test procedure for determining flux index.

---
identifier: "/us/cfr/t16/s1262.4"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "16 CFR § 1262.4 - Test procedure for determining flux index."
title_number: 16
title_name: "Commercial Practices"
section_number: "1262.4"
section_name: "Test procedure for determining flux index."
chapter_name: "CONSUMER PRODUCT SAFETY COMMISSION"
subchapter_number: "B"
subchapter_name: "CONSUMER PRODUCT SAFETY ACT REGULATIONS"
part_number: "1262"
part_name: "SAFETY STANDARD FOR MAGNETS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "15 U.S.C. 2056, 2058."
regulatory_source: "87 FR 57789, Sept. 21, 2022, unless otherwise noted."
cfr_part: "1262"
---


# 1262.4 Test procedure for determining flux index.

(a) Select at least one loose or separable magnet of each shape and size in the *subject magnet product.*

(b) Measure the flux index of each selected magnet in accordance with the procedure in section 8.25.1 through 8.25.3 of ASTM F963-17, *Standard Consumer Safety Specification for Toy Safety,* approved on May 1, 2017. The Director of the Federal Register approves this incorporation by reference in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. You may obtain a copy from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959; phone: (610) 832-9585; *www.astm.org.* A read-only copy of the standard is available for viewing on the ASTM website at *www.astm.org/READINGLIBRARY/.* You may inspect a copy at the Office of the Secretary, U.S. Consumer Product Safety Commission, 4330 East West Highway, Bethesda, MD 20814, telephone (301) 504-7479, email: *[email protected],* or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email *[email protected],* or go to: *www.archives.gov/federal-register/cfr/ibr-locations.html.*