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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Add to Alert PDF. Already Subscribed to this document. For example, r1164 value of the re? The detector must be stable with time and have adequate responsivity over the wavelength range used. More recently, discrete pseudo-monochromatic sources, such as light emitting diodes LED have also been used as sources in colorimetric spectrometers. The spectrometer may be either a typical colorimetric spectrometer, designed speci? NOTE 4—Corrections for errors in the use of integrating spheres for the 8.
ASTM E – Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation
The CIE recommends that this ideal standard of re? Standards Subsctiption may be the perfect solution. When the degree of directionality of the specimen is to be evaluated, uniplanar geometry should astk used. Some national laboratories will accept user supplied white material standards and supply a calibration of the re? Your comments are invited either for asstm of this standard or for additional standards and should be addressed to ASTM International Headquarters.
On this scale, the smallest color difference that can be reliably observed is of the order of 0.
Please first verify your email before subscribing to alerts. 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. Use of most geometries will not allow complete separation of the surface effects from the color. Your Alert Profile lists the documents that will be monitored.
Keeping the surface clean is essential as errors in apparent re? Originally approved in E — 09a 7. Exceptions to this applicability are noted. Use of a wider interval, such as 10 nm or 20 nm, will result in a signi? No other units of measurement are included in this standard.
Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation
Dust, dirt and even? If the instrument requires calibration with a Grey tile to evaluate the single-beam integrating-sphere photometric nonlinearity, the linearity veri? We have no amendments or corrections for this standard. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? When all regularly that is, specularly re?
The geometric arrangement of the viewing beam may be the same as that of the illuminating beam, or may differ, for example, by the use of a hemispherical receiver such as an integrating sphere.
NOTE 6—For all the conditions described in 8. The following paragraphs incorporate such a statement. The considerations involved and the procedures used to obtain precise spectrometric data are contained in this practice.
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Detailed descriptions of these geometries can be found in the appropriate sections of Practice E Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. If the document is revised or amended, you will be notified by email. Each user must decide whether the loss of accuracy in his measurements is negligibly small for the purpose for which data are obtained.
Td and the diffuse transmittance Td is obtained. Geometric notations may be found in Practice E The angles at which these readings occur should be noted in reference to the orientation of the specimen. The instrument user must assume the responsibility for obtaining the necessary material standards.
In such cases, verify the accuracy of the reading at the low end of the photometric scale by using a calibrated standard with re? NOTE 2—With the possible exception of the measurement of unusually structured or?