Customer Service:
Mon - Fri: 8:30 am - 6 pm EST

 Historical

ASTM E313-15e1

Standard Practice for Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates

1.1 This practice provides numbers that correlate with visual ratings of yellowness or whiteness of white and near-white or colorless object-color specimens, viewed in daylight by an observer with normal color vision. White textiles, paints, and plastics are a few of the materials that can be described by the indices of yellowness or whiteness calculated by this practice.

1.2 For a complete analysis of object colors, by a specified observer and under a specified illuminant, use of three parameters is required. For near-white specimens, however, it is often useful to calculate single-number scales of yellowness or whiteness. This practice provides recommended equations for such scales and discusses their derivations and uses, and limits to their applicability (see also Ref (1)2).

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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.


Content Provider
ASTM International [ASTM]


Others Also Bought

ASTM D1822-13
Standard Test Method for Tensile-Impact Energy to Break Plastics and Electrical Insulating Materials
ASTM D790-17
Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating ...
ASTM D638-14
Standard Test Method for Tensile Properties of Plastics
ANSI Logo

As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.

CUSTOMER SERVICE
NEW YORK OFFICE
ANSI HEADQUARTERS