The list of Occupational Exposure Limits (OELs) in Annex 1 of the Lithuanian Hygiene Standard HN 23: 2011 has been amended as per Order no. V-1237/A1-474 of 18 July 2022.

The limits of the following substances were updated:

1. Inhalable crystalline silica dust (excl. cristobalite and tridymite), alveolar fraction

2. Tridymite (variety of silica, cf. cristobalite, quartz), alveolar fraction