Vacuum gauges. Definitions and specifications for quadrupole mass spectrometers1 Scope This International Standard defines terms relevant to quadrupole mass spectrometers (QMSs) and specifies the parameters required for specification by QMS manufacturers necessary for proper calibration and for maintaining the quality of partial pressure measurement. This International Standard applies to QMSs with an ion source of the electron impact ionization type. Such QMSs are designed for the measurement of atomic mass to charge ratios m z

BS 4553-3 contains the option of solid aluminium conductors or stranded copper conductors

Note 2: BS EN 2591-416 shall be used together with BS EN 2591-100

electrical resistance method

SIS industry

if you are a manufacturer of in-line couplers

This part of BS EN ISO 9455 is only applicable for liquid fluxes > 10 % (m/m)

varnishes and their raw materials are generally dependent on the test environmental conditions

Hence BS EN 3059 walks you through the characteristics of rigid single row ball bearings in steel

It includes general principles of issues such as tolerance

This International Standard specifies the methods of test for checking the correct functioning of pliers and nippers for electronics

– bushings

NOTE 2 Annex A provides guidance on sources of introduction of hydrogen into threaded articles