Division [3A233] Mass spectrometers, other than those specified in 0B002.g., capable of measuring ions of 230 u or greater and having a resolution of better than 2 parts in 230, as follows, and ion sources therefor:F1
United Kingdom
- a..
Inductively coupled plasma mass spectrometers (ICP/MS);
- b..
Glow discharge mass spectrometers (GDMS);
- c..
Thermal ionization mass spectrometers (TIMS);
- d..
Electron bombardment mass spectrometers having both of the following features:
- 1..
A molecular beam inlet system that injects a collimated beam of analyte molecules into a region of the ion source where the molecules are ionized by an electron beam; and
- 2..
One or more ‘cold traps’ that can be cooled to a temperature of 193 K (– 80 °C);
- 1..
- e..
Not used;
- f..
Mass spectrometers equipped with a microfluorination ion source designed for actinides or actinide fluorides.
Technical Notes:
1.
Electron bombardment mass spectrometers in 3A233.d. are also known as electron impact mass spectrometers or electron ionization mass spectrometers.
2.
In 3A233.d.2., a ‘cold trap’ is a device that traps gas molecules by condensing or freezing them on cold surfaces. For the purposes of 3A233.d.2., a closed-loop gaseous helium cryogenic vacuum pump is not a ‘cold trap’.
Annotations
Textual amendments
Notes on Division [3A]
Textual amendments
- F2
Words in Annex 1 substituted (31.3.2023) by The Export Control (Military and Dual-Use Lists) (Amendment) Regulations 2023 (S.I. 2023/302), regs. 1, 5(2)(d)(i)
- F3
Words in Annex 1 Section 3A Note 1 substituted (16.12.2025) by The Export Control (Amendment) (No. 2) Regulations 2025 (S.I. 2025/1197), regs. 1(2), 9(2)(a)