Two-Part Mesh Sieves & Replacement Cloth
Distinguish Frames, Cloth and Complete Sieves
This mesh sieve range contains laboratory two-part frames and replacement screening media, not kitchen strainers. Check whether each listing supplies a frame, a cloth square or another component. Do not assume a bare frame includes the mesh required to perform a separation.
The two-part arrangement holds replaceable cloth between the frame sections. Select the frame's stated opening range first, then choose a compatible cloth and aperture. A similar-looking square or frame is not necessarily a matched assembly.
Choose the Frame for the Opening Range
Compare the nonmetallic frame for No. 20–No. 80 mesh with the 8in nonmetallic frame for No. 100 and finer mesh. Their range designations identify different configurations; confirm the exact cloth compatibility before combining components.
A brass frame for No. 100–7µm mesh is another listed option. Check frame material against your sample restrictions and handling requirements. Frame diameter and replacement-square size describe different parts of the system.
Select Replacement Mesh by Material and Aperture
The 10in No. 20 nylon cloth square lists an 850µm opening and compatibility with the specified two-part frame systems. A No. 20 polyester square provides a separate material choice. Confirm how each material behaves with the sample and any liquid used in the procedure.
The nylon listing cautions that the material may stretch when wet. It also distinguishes nominal opening sizes from meeting specific ASTM E11 tolerance requirements. Do not treat a matching sieve number as proof that replaceable synthetic cloth is equivalent to a documented woven-wire test sieve.
Check Nesting and Cleaning Limits
The fine-range nonmetallic frame listing identifies transparent polycarbonate construction and states that the assembled frames do not nest with standard metallic sieves. It also states that these frames are not autoclavable. Apply those limits to the identified frame system rather than borrowing instructions from a different nonmetallic sieve family.
Check frame condition, cloth seating and sealing before use. Follow the product instructions for replacing and disposing of screening media; replaceable cloth does not by itself guarantee freedom from contamination.
Choose a Different Sieve Family Where Required
If the procedure requires a documented woven-wire sieve, compare ASTM test sieves or ISO test sieves. For a small fixed nonmetallic configuration, review 3in nonmetallic sieves separately. Verify compatibility and documentation for the exact purchase rather than interchanging these families.
