VWR Scientific USA Standard Testing Sieve No. 40 (425 μm)

The VWR Scientific USA Standard Testing Sieve No. 40 is a precision instrument designed for particle size analysis in laboratory and industrial settings. Compliant with ASTM E-11 specifications, this sieve features a stainless steel mesh with 425 micrometer (0.0165 inch) openings, ideal for separating and classifying granular materials such as soils, aggregates, powders, and chemicals. Its robust stainless steel frame ensures durability and resistance to corrosion, making it suitable for repeated use in sieving stacks or mechanical shakers. Benefits include high accuracy in particle sizing, ease of cleaning, and compatibility with standard sieve shakers, which enhances efficiency in quality control processes. Compared to similar products from brands like Gilson or Humboldt, the VWR sieve offers reliable performance at a competitive price point, with the advantage of widespread availability through VWR's distribution network. Drawbacks may include the need for careful handling to avoid mesh damage and potential for clogging with fine or sticky materials. Applications span pharmaceuticals, food processing, mining, and environmental testing, where precise fractionation is critical. This unit appears to include a matching collection pan, adding versatility for complete sieving setups.