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Wolff-Wilborn Pencil Tester The purpose of scratch hardness tests is to determine the resistance of coating materials or lacquers to scratch effects on the surface.
In the Wolff-Wilborn Test, twenty pencils in the range of grades from 9B to 9H ( ISO 15184 / BS 3900 - E19 ) are used, each being moved over the surface under a fixed pressure and ... more
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Esco Class III Biohazard Safety Cabinet The new international standard in biohazard safety cabinetry
performance and safety. For applications requiring only the ultimate in
performance and containment.
Abolute protection: the only Class III cabinet
to use three ULPA filters (99.9999% at 0.3 microns) and pre-filters. These
provide operator / ... more
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