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Gardner Colour. The Gardner Colour scale as specified in ASTM D is a single number colour scale for grading light transmitting. Scale samples with colour. Designation: D – 98AMERICAN SOCIETY FOR TESTING AND MATERIALS Barr Harbor Dr., Reprinted from the Annual Book of ASTM Standards. Standard Test Method for Color of Transparent Liquids (Gardner Color Scale).

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We need your help! NOTE 2—The precision data were obtained using an instrument in which d15444 standards are viewed simultaneously. Viscosity tubes, as described in Test Method D, are satisfactory.

ASTM D1544-04 (2010)

If more precise measurements are needed, report as either matching a standard or lighter or darker. The specifications and awtm composition of these solutions are given in Test Method D — 58 T.

In any one set, no two standards shall be closer together than two thirds of the difference in x or y between corresponding reference standards.

Originally approved in The calibration of glass standards should be verified prior to use; a suitable procedure for their calibration is contained in Appendix X1.

Some glass standards 1 This test method is under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of Subcommittee D Current atsm approved June 1, We are a non-profit group that run this website to share documents. A number in parentheses indicates the year of last reapproval.


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No other units of measurement are included in this standard. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

ASTM D – 98 Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)

Please d144 and paste this embed script to where you want to embed Embed Script. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Your comments are invited either for revision of this standard or for additional standards ashm should be addressed to ASTM International Headquarters.

If the comparator is provided with a separate green filter in front of the light source, place this filter in the reference beam of the dual beam spectrophotometer during calibration of each standard.

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Permission rights to photocopy asrm standard may also be secured from the ASTM website www. Size px x x x x This standard has been approved for use by agencies of the Department of Defense. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this aatm.


The apparatus may be of any design, but should have the following characteristics: Alternatively equip the spectrophotometer with a condensing lens to accomplish this purpose. If the material is perceptibly cloudy, first filter it.

There are other instruments available for color matching which would be expected to give similar results, but the statement above applies only to the instrument checked. Last previous edition approved in as D — NOTE 1—If desired, liquid standards matching the adtm given in Table 1, in glass tubes similar to awtm sample tubes may be used. Significance and Use 3. These may be filled with potassium chloroplatinate for the light colors and solutions of ferric chloride and cobalt chloride in hydrochloric acid for the darker colors.

Please fill this form, we will try to respond as soon as possible. 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.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.