Timekeeping instruments. Wrist-chronometers with spring balance oscillator1 Scope This International Standard lays down the definition of the term chronometer, describing the categories, the test programme and the acceptable minimum requirements for wrist chronometers. NOTE Wristwatches using a tuning fork oscillator are subjected to these tests pending the availability of separate standards.

Note: Valves that have failed the initial shell pressure test may be reclaimed

BS EN 3662-006 also guides you with delivery codes

Conformance assessment process outline

Manufacturers of composites

it is important to be aware of the microbiological challenge that is presented in the process

1- Total alkaline sulphonates content in surface-active agents about

BS IEC 60605-4 on statistical procedures for exponential distribution for equipment reliability testing is useful for:

Products can only be tested at a concentration of 80 % or less (97 % with a modified method for special cases) as some dilution is always produced by adding the test organisms and interfering substance

The object of BS QC 790111 is to define quality assessment procedures in such a manner that electronic components released by one participating country as conforming with the requirements of an applicable specification are equally acceptable in all other participating countries without the need for further testing

and television broadcast receivers with digital sound are examples

BS EN 13625 provides users guidance on the tracer gas method

1 Instrument identification