1A226 Category 1A

Specialized packings, which may be used in separating heavy water from ordinary water, having both of the following characteristics (see List of Items Controlled).

Category 1: Special Materials and Related Equipment, Chemicals, “Microorganisms,” and “Toxins”

Reasons for control

NP: Nuclear nonproliferation
AT: Anti-terrorism

Country chart

Control	Column
AT applies to entire entry	AT 1
NP applies to entire entry	NP 1

List-based license exceptions

Exception	As stated in the entry
GBS	N/A
LVS	N/A

Items

Items: a. Made of phosphor bronze mesh chemically treated to improve wettability; and
b. Designed to be used in vacuum distillation towers.

Related controls

(1) See ECCNs 1E201 (“use”) and 1E202 (“development” and “production”) for technology for items controlled by this entry. (2) Equipment “specially designed” or prepared for the production of heavy water is subject to the export licensing authority of the Nuclear Regulatory Commission (see 10 CFR part 110).

Source: eCFR, version 2026-08-01, retrieved 2026-08-20T04:04:59+00:00.