As we all know, the sweat of the human body composition is complicated, the main ingredients for salt, vary from person to person, sweat is acidic, and alkaline. If textiles contact with sweat closely for a long time, it will produce great influence on some dyes.
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Perspiration Tester[/caption]
For consumer health, national mandatory standard GB 18401-18401 "national textile product basic safety technical specifications" for (acid, alkali) perspiration fastness rating of A product (infant textile products) require greater than or equal to 3-4; Class B products (Direct contact with the skin products) and class C products (without direct contact to skin product) are greater than or equal to 3 (the color fastness to perspiration was divided into 1 ~ 5, the larger the value, the better color fastness ).
Some textile dyes are no acid resistance, or no alkali resistance, perspiration colorfastness test is to use different PH value of artificial sweat, simulate the human body sweating in textiles for color fastness test.
The color fastness to perspiration meaning that the color of textiles maintains a certain degree of colorfastness under the action of perspiration. The test method is sew the sample and a standard lining fabric together, placed in perspiration solution and then clamped on the perspirometer tester.
