Acoustics. Reference zero for the calibration of audiometric equipment - Reference equivalent threshold sound pressure levels for pure tones and insert earphones1 Scope This part of ISO 389 specifies reference equivalent threshold sound pressure levels (RETSPL) for the calibration of pure tone audiometers supplementary to those specified in ISO 389: 19911). Values given in this part of ISO 389 are applicable to insert earphones of a pattern specified in clause 4. NOTE 1 For information, a note on the derivation of the reference values and the origin of the data input is given in annex A, and a bibliography is

and more stable assessment result

adapted where necessary to local conditions

It can also be used in conjunction with other standards for specific clinical specialities

ISO 22172‑1 provides you guidance on the installation of information systems for the manufacturers and their use by operators which allows you to standardize RMI systems instructions for manufacturers and end-users

the use of temporary work systems

BS 1876 is a British Standard that discusses sanitary installations

NOTE 1 Thief-resistant lock assemblies that provide keyless egress or assemblies that provide a secure (no egress) mode in addition to keyless egress are specified in BS 8621 and BS 10621 (respectively)

Quality testing and maintenance of fire hazard products

Please note BS 8485 does not consider ground gases other than methane and carbon dioxide

ISO 5149‑3

and transportation of reclaimed water

ease of release