Specifications for a Quality Label for Paint, Lacquer and ... - Qualicoat

6.3.10 Machu testThe Machu test must be carried out at least once a weekThe results must be entered and retained on some record readily accessible to theinspector.6.4. Quality control registers6.4.1 Control register for the production processThis register is to be maintained by the laboratory supervisor.It is either a bound register (not a spiral binding) with numbered pages, or a computerlistingIt must show the following information:− the temperature of the baths,− the chemical parameters specified by the suppliers,− the results of the etching degree test,− the results of the tests of the conversion coating weight,− the results of the water conductivity tests,− the results of the tests of the drying and stoving conditions.General remark: the drying and stoving temperature curves must be archived6.4.2 Control register for sample panelsThis register is to be maintained by the laboratory supervisor.It is either a bound register (not a spiral binding) with numbered pages, or a computerlisting.It must show the following information:− the production date− the references of the powder used: RAL or some other reference for identification,lot number, producer's name− the results of the tests:− gloss test,− thickness test,− adhesion test,− indentation test,− polymerisation test (optional for powder coatings),− cupping test,− bend test,− impact test,− Machu test,− colour shade inspection (visual inspection to compare colour with the colourshade required by the customer).QUALICOAT SPECIFICATIONS - 38 - 11 th Edition