Crock Meter one of the tests for determination of color fastness of vinyl coated fabrics is the crocking test. This test is used for the determination of colour fastness against rubbing, either under dry or under wet condition. In this test, a moving brass abrading member of specified shape and size hold a bleached fabric rubs against the test specimens under a fixed load. The amount of colour lost by the test specimen and the amount of colour transferred to a piece of abrading fabric fixed over the base of the moving abrading member are graded with the help of standard grey scales to evaluate the colour fastness of the sample under test rubbing.
- Diameter of the finger: 16 mm
- Load on the finger: 900 g
- Dimension of test specimen: 250 X 50 mm
Demattia Flex Tester
Asian De Mattia Flex Tester has a set of grips to hold test specimens in two tiers with their holding faces lying in the same vertical plane. Holding one end of the test specimen in a fixed grip and the other end in a reciprocating grip provides the flexing and unflexing action. The set of grip has two fixed grips and one large reciprocating grip positioned between them in order to flex half of the test specimen while the other half is being unflexed. The reciprocating grip is slide on hardened and ground rods made of high carbon steel. The reciprocating motion is provided by an eccentric and linkage mechanism driven by an electric motor through V-belt and pulleys. A six digit electronic counter is provided for indicating the number of the test cycles undergone. The equipment is built on a rigid fabricated base plate and finished in metallic painting and bright chrome/zinc plating to give it a corrosion resistant finish. Molding dies for preparing test specimen, and jig and punch assembly for making an initial crack in test specimen for crack growth test are available as optional accessories.
- Number of test specimens tested: Six (or Twelve)
- Maximum opening between grips: 75mm (adjustable)
- Travel of reciprocating grip: 57.15mm (adjustable)
- Flexing frequency: 300cpm
- Motor: 1/2 HP single phase 230 V AC
Product Details :
|Number of Test Specimens Tested||Six (or Twelve)|
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