Color Fastness to Perspiration Test

Test specimen:

1.  Sample fabric – 50 mm * 50 mm
2.  Multifibre fabric – 50 mm * 100 mm
3.  Cut the multifibre into two piece
4.  Sandwich the test specimen between two piece of multifibre

Testing Solution:


1. Alkaline Solution:
Histidine monohydro chloride monohydrate (C6H10ClN3O2.H2O)– 5.00 g/L
NaCl – 5.00 g/L
Disodium hydrogen orthophosphate (Na2HPO4.2H2O) – 2.5 g/L
PH – 8 (Adjust by 0.1 N NaOH)






2. Acidic Solution:
Histidine monohydro chloride monohydrate (C6H10ClN3O2.H2O)– 5.00 g/L
NaCl – 5.00 g/L
Sodium di-hydrogen orthophosphate (NaH2PO4.2H2O) – 2.2 g/L
PH – 5.5 (Adjust by 0.1 N NaOH)


Method:
- The composite specimen is put in a peri dish (2 specimen of a sample).
- Solution (Alkaline & Acidic) is taken in the two peri dish. Here, M:L is taken
1:20.
- 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.