ISO Test Sieves for Laboratory Particle-Size Analysis
Start with the Specified Opening and Construction
Choose the opening dimensions and sieve construction required by your laboratory procedure. Confirm the applicable standard on the exact product and its supplied documentation. The words ISO test sieve do not establish that every item has the same construction, tolerance or inspection level.
Keep aperture dimensions separate from frame dimensions. A micrometre opening describes the screening surface; a 200mm or 300mm designation describes the frame diameter. Select both deliberately rather than treating a familiar diameter as a complete specification.
Match Frames to the Existing System
The range includes accessories for 200mm and 300mm systems. Check the selected sieve's nesting arrangement, frame height and compatibility with the shaker. Do not substitute an 8in frame for a 200mm frame, or a 12in frame for a 300mm frame, solely because the dimensions appear similar.
One listed configuration is the Gilson 200mm all-stainless half-height sieve with 75µm openings. A 75µm version with backing cloth is listed separately. Verify the construction and supplied support layer for the exact version you choose.
Choose Frame Height and Material
Compare full-height and half-height configurations using the available stack space and the method's sample requirements. Include the pan and cover in the stack-height calculation. Check actual dimensions on the listing rather than assuming height names are interchangeable between manufacturers or frame systems.
Check frame and cloth materials independently. A brass frame does not mean brass screening cloth, and a stainless-steel description does not specify the documentation level. Where the method calls for another sieve family, compare ASTM test sieves using the complete specification rather than an opening number alone.
Order Matching Pans and Covers
Examples in this range include the 200mm stainless-steel full-height collection pan and 200mm brass sieve cover. Confirm nesting fit and materials for the selected stack. These are separate components, not complete test sieves or automatic inclusions with every order.
Plan Verification and Maintenance
Confirm the required certificates and whether additional verification is needed before the equipment enters service. Review sieve inspection tools and reference materials for sieve checks according to the actual procedure. Visual inspection and formal aperture verification are different tasks.
For wet testing or specialized particle separation, use the main sieving equipment selector to find the appropriate family instead of assuming every ISO sieve can be used with every operating method.
