Photography. Direct-exposing medical and dental radiographic film/process systems. Determination of ISO speed and ISO average gradient1 Scope This International Standard specifies methods for determining the ISO speed and ISO average gradient of the film process combinations used in medical and dental radiography other than mammography. Sensitometric procedures are described for films exposed directly to X rays. The purpose of this International Standard is to provide a method for the measurement of ISO speed and ISO average gradient so that the characteristics of the film process

1 – Rotating (or tumbling) barrel

Perchloric acid is used to separate potassium from sodium in many laboratory tests and industrial processes that use the salts of perchloric acid including explosives and plating metals

and test requirements for specific types

It does not specify requirements for such properties as:

AIS search and rescue transmitter (AIS-SART)

It specifies requirements for energy assessors to have the relevant level of competencies to enable them to conduct and/or sign-off on all energy assessments

Who is BS EN 16615 - Evaluation of bactericidal and yeasticidal activity on non-porous surfaces for

Closed and adjustable flanged housings for series 3 sleeve type linear ball bearings

which might be significantly longer than the original design life

BS EN 2369 is a European Standard that specifies the dimensions and tolerances of heat-resisting alloys wire used in aerospace construction

In BS 4742-6

requirements