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Specifications allow for use of either the (preferred) mechanised or hand operated apparatus. A test panel is clamped to a slide which slowly withdraws the panel while a needle scratches the surface. Tests are conducted either on a ‘go/no go’ basis using a single specified load or by increasing the load to determine the minimum load at which the coating is penetrated.
|Ref 705||Mechanical version (illustrated)|
|Ref 705/1||ASTM D5178|
|Ref 705/2||ASTM D2197|
|Ref 706||Hand Operated version|