ISO 13468-1:2019 PDF

Scope: This document covers the determination of the total luminous transmittance, in the visible region of the spectrum, of planar transparent and substantially colourless plastics, using a single-beam photometer with a specified CIE Standard light source and photodetector. This document cannot be used for plastics which contain fluorescent materials. This document is applicable to transparent moulding materials, films and sheets not exceeding 10 mm in thickness. NOTE 1 Total luminous transmittance can also be determined by a double-beam spectrophotometer as in method is suitable for use not only for analytical purposes but also for quality control. NOTE 2 Substantially colourless plastics include those which are faintly tinted. NOTE 3 Specimens more than 10 mm thick can be measured provided the instrument can accommodate them, but the results might not be comparable with those obtained using specimens less than 10 mm thick.

ISO 13468-1:2019 Referenced Document

ISO 11664-1 Colorimetry — Part 1: CIE standard colorimetric observers
ISO 11664-2 Colorimetry — Part 2: CIE standard illuminants
ISO 291 Plastics - Standard atmospheres for conditioning and testing
ISO 5725-1 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions*， 2023-07-01 Update
ISO 5725-2 Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method*， 2019-12-06 Update
ISO 5725-3 Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate precision and alternative designs for collaborative studies*， 2023-06-01 Update

2019 ISO 13468-1:2019 Plastics — Determination of the total luminous transmittance of transparent materials — Part 1: Single-beam instrument
1996 ISO 13468-1:1996 Plastics - Determination of the total luminous transmittance of transparent materials - Part 1: Single-beam instrument