Plastics. Determination of the molecular mass and molecular mass distribution of polymer species by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS)1 Scope This document specifies a general method for determining the average molecular mass and molecular mass distribution of polymers (see Reference [1]) from 2 000 g mol1 to 20 000 g mol1 by matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI TOF MS). The average molecular masses and molecular mass distributions are calculated from a calibration curve constructed using synthetic polymer and or biopolymer standards.

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as well as of other plastics and non-plastics materials

BS EN 13146‑4 on the test methods for fastening systems relevant to:

ISO 12117-2 is intended to assure operators of reasonable protection when operating in a normal condition

BS EN 4008-003 guides you on the characteristics and requirements for a positioner

NOTE 6 The way to collect the information to be transferred to the user is out of the scope of this document

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BS EN 61988-4 on Climatic and mechanical test methods for Plasma display panels is useful for:

and actions if verification is outside the accuracy class to validate the technical requirements and metrological performance characteristics (e

Who is DD IEC/PAS 62545 - Environmental information on electrical and electronic equipment

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