rec_1
(1) Directive 2011/65/EU prohibits the use of cadmium in electrical and electronic equipment placed on the market. Cadmium is present in the anodes of Hersch Cells, which are used in specialised, high-sensitivity oxygen sensors. In comparison to the Hersch cell sensors, all available alternative technologies do not provide the same sensitivity, reliability and accuracy when measuring oxygen concentration at very low levels.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-19 · Text as adopted (Official Journal); later amendments are not incorporated in this text.