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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Size px x x x x Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Its application to other materials has not been tested. No other units of measurement are included in this standard. NOTE 1—If desired, liquid standards matching the colors given in Table 1, in glass tubes similar to the sample tubes may be used.
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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. A number in parentheses indicates the year of last reapproval. If the comparator is provided with a separate green asrm in front of the light source, place this filter in the reference beam of the dual beam spectrophotometer during calibration of each standard. No further reproductions authorized.
If the material is perceptibly cloudy, first filter it. Last previous edition approved in as D — 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.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. In any one set, no two standards shall be closer together than two thirds of the difference in x or zstm between corresponding reference standards.
This standard is subject to revision at any time by the responsible technical astj and must be reviewed every five years and if not revised, either reapproved or withdrawn.
Alternatively equip the spectrophotometer with a condensing lens to accomplish this purpose.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. NOTE 2—The precision data were obtained using an instrument in which two standards are viewed simultaneously.
ASTM D1544-04 (2010)
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The color shall be produced by the glass components only. 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 – 04() Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)
Originally approved in Viscosity tubes, as described in Test Method D, are satisfactory. If more precise measurements are needed, report as either matching a standard or lighter or darker.
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. The apparatus may be of any design, but should have the following characteristics: We xstm a non-profit group that run this website to share documents. Please help us to share our service with your friends.
Permission rights to photocopy the standard may also be secured from the ASTM website www. The calibration of glass standards should be verified prior to use; a suitable procedure for their calibration is contained in Appendix X1.
ASTM D – 04 Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)
This standard has been approved for use by agencies of the Department of Defense. Significance and Use 3. Your comments will receive careful consideration at a meeting of the responsible technical committee, astmm you may attend.