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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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.
If more precise measurements are needed, report as either matching a standard or lighter or darker. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
No further reproductions authorized. 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. A number in parentheses indicates the year of last reapproval.
ASTM International takes no position respecting the validity of any patent rights asserted in connection xstm any item mentioned in this standard. Thank you for interesting in our services. 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 apparatus may be of any design, but should have the following characteristics: Precision and Bias 7.
We need your help! The calibration of glass standards should be verified prior to use; a suitable procedure for their calibration is contained in Appendix X1.
This standard has been d15444 for use by agencies of the Department of Defense. Size px x x x x We need your help to maintenance this website.
Significance and Use 3.
Originally approved in Its application to other materials has not been tested. Viscosity tubes, as described in Test Method D, are satisfactory. Please fill this form, we will try to respond as soon as possible. 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. Please help us to share our service with your friends.
ASTM D1544-04 (2010)
If the material is perceptibly cloudy, first filter it. No other units of measurement are included in this standard. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. D154 copy and paste this embed script to where you want to embed Embed Script.
NOTE 2—The precision data were obtained using an instrument in which two standards are viewed simultaneously. 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 This standard is subject to revision at any time by the responsible asm committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.
The specifications and approximate composition of these solutions are given in Test Method D — 58 T. Last previous edition approved in as D — Alternatively equip the spectrophotometer with a condensing lens to accomplish this purpose.
ASTM D () – Free Download PDF
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. We are a non-profit group that run this website to share documents. The color shall be produced by the glass components only.