Test specimen:
- Sample fabric – 50 mm * 50 mm
- Multifibre fabric – 50 mm * 100 mm
- Cut the multifibre into two piece
- Sandwich the test specimen between two piece of multifibre
Testing Solution:
Water is taken as required
Method:
- The composite specimen is put in a peri dish (2 specimen of a sample).
- Water is taken in the peri dish as required.
- Bubble is made out from the specimen by tapping.
- The specimen is put for 30 minutes.
- A glass plate is placed on the composite specimen for 15 minutes at room
temperature
Excess solution is poured off.
- Peri dish with composite specimen & glass plate is placed into the incubator at
(37+-2) 0C for 4 hours.
- The specimen is dried (Temp 600C)
Report:
- Change of shade & degree of staining is measured by the Grey Scale & Staining
Scale.
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