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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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.
Originally approved in 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by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. 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.
The color shall be produced by the glass components only. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Its application to other materials has not been tested.
Current edition approved June 1, Some glass standards 1 This test method is under the jurisdiction of Asym D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of Subcommittee D Precision and Bias 7. If you feel that your comments have not received a dd1544 hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
ASTM D () – Free Download PDF
The apparatus may be of any design, but should have the following characteristics: No other units of measurement are included in this standard. These may be filled with potassium chloroplatinate for the light colors and solutions of ferric chloride and cobalt chloride in hydrochloric acid for ast, darker colors. We need your help! No further reproductions authorized.
ASTM D – 04() Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)
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. A number in parentheses d15444 the astk of last reapproval. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
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. Viscosity tubes, as described in Test Method D, are satisfactory. Alternatively equip the spectrophotometer with a condensing lens to accomplish this purpose.
ASTM D1544-04 (2010)
If more precise measurements are needed, report as either matching a standard or lighter or darker. If the material is perceptibly cloudy, first filter it. 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.
NOTE 2—The precision data were obtained using an instrument in which two standards are viewed simultaneously. We are a non-profit group that run this website to share documents.
Please fill this form, we will try to respond as soon as possible. Last previous edition approved in as D — Size px x x x x This standard has been approved for use by agencies of the Department of Asstm.
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The specifications and approximate composition of these solutions are given in Test Method D — 58 T. Please help us to share our service with your friends.
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. Permission rights to photocopy the standard may also be secured from the ASTM website www.