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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NOTE 1—If desired, liquid standards matching the colors given in Table 1, in glass tubes similar to the sample tubes may be used. The calibration of glass standards should be verified prior to use; a suitable procedure for their calibration is contained in Appendix X1.
Significance and Use 3. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. No further reproductions authorized. If the material is perceptibly cloudy, first filter it. If more precise measurements are needed, report as either matching a standard or lighter or darker.
The color shall be produced by the glass components only. It is the responsibility of the user of this standard to establish d15544 safety and health practices and determine the applicability of regulatory limitations prior to use.
ASTM D – 04() Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)
The specifications and approximate composition of these solutions are given in Test Method D — 58 T. If asm 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. NOTE 2—The precision data were obtained using an instrument in which two standards are viewed simultaneously.
Last previous edition approved in as D — We need your help to maintenance this website.
This standard is subject to revision at any time dd1544 the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. 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.
This standard has been approved for use by agencies of the Department of Defense.
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ASTM D1544-04 (2010)
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 Originally approved in 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.
Size px x x x x The apparatus may be of any design, but should have the following characteristics: Precision and Bias 7. Viscosity tubes, as described in Test Method D, are satisfactory. Please fill this form, we will try to respond as soon as possible. A number in parentheses indicates the year of last reapproval.
We need your help! Alternatively equip the spectrophotometer with a condensing lens to accomplish this purpose. Its application to other materials has not been tested. No other units dd1544 measurement are included in this standard.
ASTM D – 98 Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Thank you for interesting in our services. Current edition approved June 1, 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. 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.