Hearing aids - Specification for dimensions of the nipple and sealing device for insert earphones Ingestion-build-117251 BS 1722-1:2006 supersedes BS 1722-1:1999

BS 1722-1:2006 supersedes BS 1722-1:1999 which will be withdrawn

The factory production control (FPC) section for slurry surfacings is updated

NOTE 2 Heat-resistant steel grades can be found in ISO 4955 and they can be used for corrosion-resistant purposes

BS EN ISO 15001 gives recommendations for the selection of materials and the cleaning of components made from them

Hearing aids - Specification for dimensions of the nipple and sealing device for insert earphones Ingestion-build-117251 BS 1722-1:2006 supersedes BS 1722-1:19991 Scope This standard is applicable to insert earphones which can be fitted to an earmould inserted into the ear canal.