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1.1 This test method covers the evaluation of specific light-transmitting and wide-angle-light-scattering properties of planar sections of materials such as essentially transparent plastic. Two procedures are provided for the measurement of luminous transmittance and haze. Procedure A uses a hazemeter as described in Section 5 and Procedure B uses a spectrophotometer as described in Section 8. Material having a haze value greater than 30 % is considered diffusing and should be tested in accordance with Practice E2387.
1.2 The values stated in SI units are to be regarded as standard.
Note 1—For greater discrimination among materials that scatter a high percent of light within a narrow forward angle, such as is the case with abraded transparent plastics, adjust the hazemeter and perform measurements in accordance with Test Method D1044.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 2—This test method is not equivalent to ISO 13468-1 and ISO/DIS 14782.
Note 2—This test method is not equivalent to ISO 13468-1 and ISO/DIS 14782.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D618 Practice for Conditioning Plastics for Testing
D883 Terminology Relating to Plastics
D1044 Test Method for Resistance of Transparent Plastics to Surface Abrasion
E259 Practice for Preparation of Pressed Powder White Reflectance Factor Transfer Standards for Hemispherical and Bi-Directional Geometries
E284 Terminology of Appearance
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E2387 Practice for Goniometric Optical Scatter Measurements
ISO StandardsISO 13468-1 Plastics--Determination of the Total Luminous Transmittance of Transparent Materials ISO/DIS 14782 Plastics--Determination of Haze of Transparent Materials
ICS Number Code 83.140.99 (Other rubber and plastic products)
UNSPSC Code 41115330(Haze meter); 41115406(Spectrophotometers)
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ASTM D1003-11, Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics, ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top