According to the newly revised Annex 1 of 22 August 2022, Brussels - Production of Sterile Medicinal Products Volume 4 EU Guidelines - Isolators and RABS should be designed to provide protection through separation of the grade A environment from the environment of the surrounding room. The company BLOCK Technology a.s. offers all companies using isolator technology or RABS an assessment of the current state of the equipment in use according to the revised annex 1 and their upgrade to the new requirements.