A-A-55126B
3/ The colorfastness after laundering and light exposure shall remain the same hue as the original
sample. Hue/cast is defined as the attribute or color that classifies a color as red, blue, and
green etc.
4/ If specified in the contract or purchase order.
5/ Rated using the AATCC Evaluation Procedure 8, AATCC 9-Step Chromatic Transference
Scale.
3.6 Spectral Reflectance. The reflectance values for the loop side of the Foliage Green 504
finished tape shall conform to the requirements specified in Table IV, when tested as specified in
3.6.1.
3.6.1 Spectral reflectance test. Spectral reflectance data shall be determined on the face side
and shall be obtained from 600 to 860 nanometers (nm) at 20 nm intervals on a spectrophotometer
relative to the barium sulfate standard, the preferred white standard. Other white reference
materials may be used provided they are calibrated to absolute white, e.g. magnesium oxide or
vitrolite tiles. The spectral bandwidth shall be less than 26 nm at 860 nm. Reflectance
measurements shall be made by either the monochromatic or polychromatic mode of operation.
When the polychromatic mode is used, the spectrophotometer shall operate with the specimen
diffusely illuminated with the full emission of a source that simulates either CIE source A or CIE
source D65. The specimen shall be measured as a single layer only on the loop fastener tape.
Measurements shall be taken on a minimum of two different areas and the data averaged.
Specimens shall be oriented in different directions during testing. The specimen shall be viewed
at an angle no greater than 10 degrees from the normal, with the specular component included.
Photometric accuracy of the spectrophotometer shall be within 1 percent and the wavelength
accuracy within 2 nm. The standard aperture size used in the color measurement device shall be
0.3725 inches or larger in diameter to measure the loop fastener tape. Any color having spectral
reflectance values outside the limits at four or more of the wavelengths specified shall be
considered a test failure.
TABLE IV - Spectral reflectance requirements, Reflectance Values, %
Wavelength,
Foliage Green 504
Nanometers (nm)
(Loop (pile)fastener tape
only)
Min.
Max.
640
8
20
660
10
26
680
12
32
700
20
40
720
22
46
740
24
46
760
26
48
780
30
48
800
34
50
820
34
54
840
36
54
860
38
56
6
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