Asbestos quality is under permanent control at all stages of the production cycle, starting from asbestos ore incoming control and down to acceptance tests of the finished product at the final stage of packing and shipment. The test laboratories are equipped with modern testing and measuring equipment. Tests are conducted by specially trained qualified personnel by standard techniques.

Tests show :

... content of asbestos by fractions, groups 0-6, found by dry method

... content by fiber length, by Bauer-Mac-Nett and Tumer-Newall hydroclassifiers

... fiber mean length of asbestos of 0,1,2 groups
       and non-spinnable (below 5 mm) fibers content

... degree of fiber separation capacity (openness), by elutriator

... wet volume

... fiber specific surface area, by Rapid-Tester

... asbestos suspension filtration rate in lime mortar

... asbestos fibers strength in asbestos-cement samples