EN
ZHTest Method: SATRA TM235
Resistance to repeated wetting and drying
July 2001
SCOPE
The test is intended to assess any change in softness and colour of upper leathers as a result of repeated wetting and drying. Water absorption and desorption can also be monitored if required. The method is applicable to all upper leathers.
PRINCIPLE
Test specimens are soaked in water or salt water for one hour then left at room temperature to dry for 23 hours. This procedure is repeated a number of times. The test specimens are compared to an untreated sample and a subjective assessment of the difference in softness/suppleness is made. Any change in colour is assessed by reference to grey scales. Water absorption and desorption can also be measured if required, by weighing test specimens before and after immersion.
REFERENCES
ISO 105-A02: 1987 - Grey scale for assessing change in colour.
ISO 105-A03: 1987 - Grey scale for assessing staining.
ISO 3696: 1987 - Water for analytical laboratory use - specification and test methods.
HISTORY
First issued July 2001.
AVAILABILITY
This test method is available to members and non-members.
PRICE (ex. VAT)
This price is for a printed copy of the Test Method.
- Members: £75
- Non-members: £215