Find the most up-to-date version of ASTM E at Engineering ASTM E() E1 Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation [ASTM International] on *FREE*. ASTM E Standard Practice for Obtaining Spectrometric Data for Object- Color Evaluation. This practice covers the instrumental measurement.

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The presence of surface contaminants will critically affect the reliability of this standard. You may delete a document from your Alert Profile at any time. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. A still better method for characterizing? NOTE 6—For all the conditions described in 8. See also Guide E and Practice E The following paragraphs incorporate such a statement. The values and procedures for computing CIE tristimulus values from spectrometric data are contained in Practice E Requirements When Using Spectrometry 6.

Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation

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 e114 address shown below. NOTE 5—When a hemispherical receiver such as an integrating sphere is used, and the specimen is placed?

This practice is general as to the e11164 to be characterized for color. Add to Alert PDF. Each user must decide whether the loss of accuracy in his measurements is negligibly small for the purpose for which data are obtained.

Thus there is only one mode of measurement possible for the d: No other units of measurement are included in this standard. Already Subscribed to this document.


Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. If a white re? Summary s1164 Practice 4. Use of a wider interval, such as 10 nm or 20 nm, will result in a signi? This standard is also available to be included in Standards Subscriptions. The preferred geometry will be the one that minimizes the surface effects, thereby optimizing the separation. NOTE 4—Corrections for errors in the use of integrating spheres for the 8.

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. The information reported here re? See Practice E The instrument user must assume the responsibility for obtaining the necessary material standards. For example, the value of the re? Need more than one copy?

It is essential that these portions impinge on e11664 of the sphere wall having the same re? Detailed descriptions of these geometries can be found in the appropriate sections of Practice E The considerations involved and the procedures used to obtain precise spectrometric data are contained in this practice. Colorimetric data are obtained by combining object spectral data with data representing a CIE standard observer and a CIE standard illuminant, as described in Practice E E — 09a 7.

Current edition approved June 1, Keeping the surface clean is essential as errors in apparent re? Care must be taken to correct for this error 3, Test Method D While this method works?

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the aatm address or at phonefaxor service astm.

ASTM E – Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation

Inter-instrument agreement comparing different types of instruments, especially if different geometric parameters of the illuminating and viewing conditions are involved, is likely to be an order of magnitude poorer 23, Standardization and Material Standards The angle between the direction of viewing and the normal to the specimen surface should not exceed 0.


The condition of the specimens before and after measurement should be noted and reported. In such cases, it is recommended 5 to use the substitution method of measurement rather than the comparison method 3.

Care should be taken not to touch the area to be measured except for application of a suitable cleaning procedure. When the regularly transmitted beam is excluded, for example by the use of a light trap, the condition is designated 0: In other cases, use may be made of another white material, with assigned re?

Exceptions to this applicability are noted. The spectrometer may be either a typical colorimetric spectrometer, designed speci?

Whenever the cavity is employed it should always be presented to the instrument in the indicated orientation. Tt and the measurement provides the total transmittance factor Tt. Use of most geometries will not allow complete separation of the surface effects from the color.

In order to avoid implying unnecessary restrictions on instrumentation that can be used, when referencing this practice one should except in those cases of? The detector may be a photoelectric device phototube or photomultipliera silicon photodiode or diode array, or another suitable photodetector.