Newark Wire Cloth manufactures Test Sieves! Precision test sieves providing consistent, repeatable, and reliable particle sizing results from 5” (125 mm) openings down to 0.0008” (20 micron) openings. Newark’s test sieves are manufactured in accordance with ASTM E11 and ISO 3310-1 specifications.
ASTM E11 Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves.
The ASTM E11 specification specifies that test sieves shall be available in (3) different confidence levels.
– Compliance Grade (66.0% Confidence level)
– Inspection Grade (99.0% confidence level)
– Calibration Grade (99.73% confidence level)
ISO 3310-1:2016 International Standard for Test Sieves; Technical requirements and testing for test sieves of metal wire cloth.
8"dia Test Sieve
200mm Air Jets
18" dia. Test Sieve w/brakets
Test sieves manufactured using sieve cloth that has been inspected after weaving and before being mounted in the sieve frame. The sieve cloth mounted in sieve frame will meet the requirements of ASTM E11 (Table 1) with respect to the number of openings measured per 100 s/f (Column 7) and not exceed the maximum allowable standard deviation (Column 8).
Click image to view a sample of the documentation and certification supplied for Inspection Sieve Certification.
Manufactured using sieve cloth that has been inspected after being mounted in the sieve frame. The sieve cloth meets the requirements of ASTM E11 (Table 1) with respect to the number of openings measured (Column 9) and not exceeding the allowable maximum standard deviation (Column 10).
Click image to view a sample of the documentation and certification supplied for Inspection Sieve Certification.
That has been manufactured using sieve cloth that has been inspected after being mounted in the sieve frame. The sieve cloth meets the requirements of ASTM E11 (Table 1) with respect to the number of openings measured (Column 11) and not exceeding the allowable maximum standard deviation (Column 12).
Click image to view a sample of the documentation and certification supplied for Calibration Sieve Certification.
Pure Tin Soldered
Pure tin solder is used to secure the sieve cloth to the underside of the sieve frame. Evidence of pure tin solder is virtually absent from the interior surfaces of the sieve.
Most Pharmaceutical, Food, and Beverage applications permit the use of test sieves fabricated using pure tin solder.
Pure tin solder can be used for most ‘wet sieving’ and ‘dry sieving’ applications.
Pure tin solder should not be used when temperatures are greater than 350oF
Pure tin solder is not recommended for equipment exposed to caustic cleaning solutions or acid. Pure tin solder will break down over time. We recommend using a welded test sieve when these conditions exist.
UV Adhesive
UV Adhesive, a proprietary state-of-the-art polymeric adhesive is used to secure the sieve cloth to the underside of the sieve frame. It effectively seals the joint between the sieve cloth and the test sieve frame. Similar to the pure tin solder, it is virtually absent from the interior surfaces of the sieve.
The UV adhesive has been laboratory tested and certified to be in compliance with USP Biological Reactivity Tests in Vivo USP Plastics Class VI.
NOTE: UV adhesive test sieves are not the best choice if you’re looking for laboratory test sieves for ‘wet sieving, or for applications with significant humidity or moisture; as the adhesive bond between the sieve cloth and the test sieve frame can break down and become weak over time.
Welded Construction
A welded test sieve has the sieve cloth continuously resistance spot welded to the underside of the sieve frame.
The individual spot welds are overlapped, no voids thus ensuring that all product passes through the sieve screen, not around it. The sieve cloth is welded directly to the sieve frame, no filler metal. Whether a coarse mesh or fine mesh all can be supplied in a welded construction.
Welded test sieves can be used for most ‘wet sieving’ and dry sieving’ applications. They are ideal for pharmaceutical applications where caustic cleaning requirements exist.
3” thru 18” diameter Test Sieves (Full and Half Height)
Sieve Diameter | Depth To-Cloth | Overall Height |
---|---|---|
(inches) | (inches) | (inches) |
3 | 1-1/4" | 1-3/4" |
5 | 1-3/4" | 2-3/8" |
6 | 1-3/4" | 2-3/8" |
8 | 1" and 2" | 1-5/8" and 2-3/4" |
12 | 3-1/4" | 4-1/4" |
16 | 4" | 4-3/4" |
18 | 4" | 4-3/4" |
Air Jet Test Sieve are the ideal solution for determining particle sizes for dry powders. Air Jet Test Sieves have a worldwide reputation for accuracy, reliability, and repeatability.
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