ASTM D1003-13
Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics

Standard No.

ASTM D1003-13

Release Date

2013

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D1003-21

Latest

ASTM D1003-21

Scope

4.1 Light that is scattered upon passing through a film or sheet of a material can produce a hazy or smoky field when objects are viewed through the material. Another effect can be veiling glare, as occurs in an automobile windshield when driving into the sun.

4.2 Although haze measurements are made most commonly by the use of a hazemeter, a spectrophotometer may be used, provided that it meets the geometric and spectral requirements of Section 5. The use of a spectrophotometer for haze measurement of plastics can provide valuable diagnostic data on the origin of the haze,⁴ and Procedure B is devoted to the use of a spectrophotometer.

4.2.1 Procedure A (hazemeter) test values are normally slightly higher and less variable than Procedure B (spectrophotometer) test values.

4.3 Regular luminous transmittance is obtained by placing a clear specimen at some distance from the entrance port of the integrating sphere. However, when the specimen is hazy, the total hemispherical luminous transmittance must be measured by placing the specimen at the entrance port of the sphere. The measured total hemispherical luminous transmittance will be greater than the regular luminous transmittance, depending on the optical properties of the sample. With this test method, the specimen is necessarily placed at the entrance port of the sphere in order to measure haze and total hemispherical luminous transmittance.

4.4 Haze data representative of the material may be obtained by avoiding heterogeneous surface or internal defects not characteristic of the material.

4.5 Haze and luminous-transmittance data are especially useful for quality control and specification purposes.

4.6 Before proceeding with this test method, reference should be made to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions, or testing parameters, or combination thereof, covered in the materials specification shall take precedence over those mentioned in this test method. If there are no material specifications, then the default conditions apply.

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 308201;% 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 u......

ASTM D1003-13 Referenced Document

• ASTM D1044 Standard Test Method for Resistance of Transparent Plastics to Surface Abrasion
• ASTM D618 Standard Practice for Conditioning Plastics for Testing
• ASTM D883 Standard Terminology Relating to Plastics
• ASTM E2387 Standard Practice for Goniometric Optical Scatter Measurements
• ASTM E259 Standard Practice for Preparation of Pressed Powder White Reflectance Factor Transfer Standards for Hemispherical and Bi-Directional Geometries
• ASTM E284 Standard Terminology of Appearance
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• ISO 13468-1 Plastics — Determination of the total luminous transmittance of transparent materials — Part 1: Single-beam instrument

ASTM D1003-13 history

• 2021 ASTM D1003-21 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
• 2013 ASTM D1003-13 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
• 2011 ASTM D1003-11e1 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
• 2011 ASTM D1003-11 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
• 2007 ASTM D1003-07e1 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
• 2007 ASTM D1003-07 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
• 2000 ASTM D1003-00 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
• 1992 ASTM D1003-92 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics