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A range of apparatus and consumable items used to assess the likelihood of textile based products to yellow in transit or storage.
The products can be used on white or pastel colored yarns, fabric or finished garments.
The test is intended only to predict the yellowing which may be caused by the action of oxides or nitrogen on yellowable phenols. The test is not intended to deal with any other causes of yellowing such as fading of optical brighteners, gas fume fading or other such causes.
Phenotest has shown to be very useful in controlling the quality of white and pastel colored goods and can significantly reduce customer complaints due to this factor.
Impregnated test paper impregnated with a methanol solution which contains the phenolic chemical.
Control Fabric. The test is considered valid if the control fabric has turned yellow.
Glass plates 100 x 400 x 3mm to separate specimens.
BHT-free film to wrap each set of test specimens in.
Perspirometer to provide uniform contact between the test papers and fabric samples under a standard load.
Incubator/oven. The test specimens are exposed for 16 hours at 50 degrees C +/- 3 degrees C.
Grey scale for assessing staining.
Template for cutting BHT-free polyethylene film.
The test paper is folded lengthwise and the specimen to be tested is sandwiched between the two sides of the paper. The sandwich is then placed between two glass plates.
A standard package consists of 5 test specimens and 1 piece of control fabric. This requires a total of seven glass plates. If more than 5 specimens are required to be tested, additional sets of specimens must be made. Each set of specimens and control fabrics are wrapped in BHT-free film and sealed with ordinary adhesive tape. Up to three such sets of specimens are placed in a perspirometer, and the pressure is kept uniform by the application of a standard weight. Up to 4 perspirometers are placed in an incubator at a temperature of 50 degrees C +/- 3 degrees C for 16 hours. This allow one days samples to be treated overnight, ready to be assessed the next day.
At the end of the 16 hour test period, the perspirometers are removed from the oven and allowed to cool. The sets of specimens are unwrapped. If the control fabric has turned yellow, the specimens are compared with their original untested specimens and assessed with the standard grey scale for staining.
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ORDERING INFORMATION
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G001A
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Phenotest Impregnated Test Papers 100 x 75mm, pack of 200. (40 individual tests).
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G001B
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Phenotest Control Fabrics 100 x 30mm, pack of 40. (40 individual tests)
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G001C
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Phenotest BHT-Free Plastic Film, pack of 20m x 610mm wide (doubled) (40/50 individual tests).
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G001D
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Phenotest Glass Plates 100 x40 x 3mm. (Pack of 10)
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G001E
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Film Cutting Template
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G001F
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Phenotest Evaluation Kit -Allows prospective users to easily evalute their need for these products (requires oven/incubator,perspirometer and grey scale (staining) ISO or AATCC.
Kit consists of:
7 Glass Plates
12 Impregnated Test Papers (Foil Wrapped)
2 Control Fabrics (Foil Wrapped)
1 set of instructions
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M231
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PERSPIROMETER - To determine color fastness to perspiration of textiles. Provided with 2 stainless steel frames each with a capacity of 20 samples of 10cm x 4cm held between acrylic separator plates. Loading weights for BS, ISO and AATCC Standards are included. An electric incubator is required. (See G209A/B).
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G209A
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COMBINED LABORATORY OVEN AND INCUBATOR
30 litres capacity. Dual temperature ranges (25-110oC+/- 0.75oC). Stainless steel interior, circulation fan and door thermometer, 2 shelves.
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G246B
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GREY SCALE A03 - For assessment of staining to meet ISO/SDC/BS Standards.
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G246BB
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GREY SCALE No. 2 - For assessment of staining to meet AATCC Standards.
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