TFPP-50: Phenotest Impregnated Test Papers 100 X 75 mm. Pack of 50 pieces
$86.75 / Pack
Phenolic yellowing affects natural and synthetic fibers. The phenolic antioxidants present in the packing material along with exposure to oxides of nitrogen and alkali pH of the fabric are responsible for yellowing.
Phenolic yellowing is a discoloration phenomenon in textiles caused by the reaction of nitrogen oxides with yellowable phenolic compounds, often resulting in unsightly yellow stains on white or light-colored fabrics.
Testfabrics Phenotest impregnated test papers are soaked in a methanol solution containing phenolic chemicals that can cause yellowing in textiles. The phenolic compounds in the paper act as a controlled source of yellowing agents, simulating the effect of phenolic substances (such as certain antioxidants like BHT) migrating from the material into the paper. When the test paper is placed in contact with a fabric sample under standardized conditions (e.g., in a Perspirometer at 50 °C for 16 hours), any yellowing of the fabric indicates that the fabric has the potential to yellow under similar conditions.
Description
Test papers should be 98% pure cellulose and treated with 0.1% 2.6 Di-tert-butyl-4-nitrophenol to give a Grey Scale Staining grade of 3 or worse. (ie. 2/3, 2, 2/1, 1). Test papers must be kept stored in resealable aluminum foil packaging, in a cool dry environment or conditioned laboratory. Test papers must be used within six months of opening.
| Product Name | TFPP-50: Phenotest Impregnated Test Papers 100 X 75 mm. Pack of 50 pieces. |
| Product Number | 2001004 |
| Important product detail | Comes in a package with TFPC-50, which is the control fabric in the phenotest. |
| Test Material Type | 100% cellulose paper / 50 sheets per pack |
| Material Construction | White paper, flat, straight edges |
| Approx dimensions | 100mm(± 2 mm) X 75 mm(± 2 mm) |
| Weight | 88g/m2 ± 7 at 20 degrees Celsius |
| Net Weight of one pack of 50 sheets (the smallest unit we sell) | 42g |
| Product technical details | Impregnated test paper.
Impregnated with a methanol solution which contains the phenolic chemical. |
| Test Methods | AATCC EP 11, ISO 105-X18, M&S C20B |
| Testing Standards | AATCC 1. TM (TEST METHODS), ISO, M&S |
| MOQ | 1 Pack |
Primary Uses by Industry
| Industry Type | Specifications |
| QA Testing | The Phenotest assesses the potential of phenolic yellowing of textile materials. Performing this test will help manufacturers understand and predict if a garment will yellow while in its package, in transit and in storage.
The test papers are impregnated with a methanol solution containing the phenolic compound and oxides of nitrogen. The pH conditions are provided by the material under test. The yellowing comes from the phenols. Chemically, the yellow substances form through nitration and/or oxidation of specific phenolic substances often found to be present in antioxidants and preservatives. The control fabric goes yellow (dark lemon), during the test, ensuring that correct test conditions have been used. BHT-free film is utilized during the test to ensure that the yellowing that has occurred is not due to products within the film. |
