GOST R 59878-2021 - Std. & Spec

Scope: This standard applies to voice-forming devices (hereinafter referred to as devices) designed to compensate for the lost functions of the vocal cords and partial rehabilitation of the voice in people who have lost it, as well as in people with an extirpated (removed) larynx. In terms of perceived mechanical impacts, the devices belong to group 3 according to GOST R 50444. Type of climatic design of the devices: U, category 1.1 according to GOST 15150, but for operation at ambient temperatures from plus 40 ° C to minus 25 ° C at the nominal (upper) value relative humidity up to 100% at 25 °C and lower temperatures without moisture condensation, at atmospheric pressure from 650 to 800 mm Hg. st

GOST R 59878-2021 history

2021 GOST R 59878-2021 Voice formation apparatus. Basic parameters and technical requirements