Brand: Retsch | Category: Scientific & Laboratory Equipment
Tap sieve shaker that mechanises the manual sieving procedure specified in several national standards, superimposing a vertical tapping action on a horizontal circular motion. It is used where a standard calls for tapping rather than vibration, and gives the reproducibility of a machine in place of hand sieving.
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Woven wire mesh test sieves in the 200 mm and 203 mm (8 inch) frame diameters that most laboratory sieve shakers are built around. The mesh is tensioned into a stainless steel frame and the sieves are supplied to ISO 3310-1 and ASTM E11, with inspection, calibration or certified quality options depending on the level of documentation a laboratory needs.
Air jet sieving machines that combine sieving and weighing in one instrument, so the sieve does not have to be removed between fractions. The pharma version adds audit trail functionality for regulated laboratories. Both work on the rotating air jet principle for fine powders that will not disperse under vibration.
Woven wire mesh test sieves in 100 mm, 305 mm, 400 mm and 450 mm frame diameters for shakers outside the standard 200 mm format. The 305 mm and larger frames suit aggregate and construction material grading where sample masses are high, while the 100 mm frame is used where sample quantity is limited.