Newark Wire Cloth Company

Types of Construction

Types of Construction Test Sieves

Pure Tin Soldered Test Sieve
Pure Tin Soldered Test Sieve

Pure Tin Soldered Test Sieve – shown
Looking into the sieve.Inset – shown looking at the underside of the sieve

Pure Tin Soldered

Pure Tin Soldered Test Sieves are assembled using Pure Tin Solder to secure the sieve cloth to the test sieve frame.

Most Pharmaceutical, Food, and Beverage applications permit the use of Test Sieves fabricated with Pure Tin Solder.

Evidence of the Pure Tin Solder is virtually absent from the interior surfaces of the test sieve; the sieve cloth is secured to the underside of the sieve frame.

Pure Tin Soldered Test Sieves can be used for most ‘wet sieving’ and ‘dry sieving’ applications.

Pure Tin Soldered Test Sieves should not be used when temperatures are greater than 350oF.

Stainless Steel Frame / Stainless Steel Cloth Test Sieves fabricated using Pure Tin Soldered Test Sieves are FDA compliant.

NOTE: Pure Tin Soldered Test Sieves are not recommended for exposure to a caustic cleaning solution or acid as the Pure Tin Solder will break down over time. We recommend using welded Test Sieve when these conditions exist.

UV Adhesive Rest Sieve
UV Adhesive Rest Sieve

UV Adhesive Test Sieve – shown
Looking into the sieve.Inset – shown looking at the underside of the sieve

UV Adhesive

UV Adhesive Test Sieves are assembled using a proprietary state-of-the-art polymeric adhesive to secure the sieve cloth to the test sieve frame.It effectively seals the joint between the sieve cloth and the test sieve frame.

Similar to the Pure Tin Soldered construction, the UV Adhesive is virtually absent from the interior surfaces of the test sieve; the sieve cloth is secured to the underside of the sieve frame.

This adhesive has been laboratory tested and certified to be in compliance with UPS Biological Reactivity Tests in Vivo USP Plastics Class VI.

A UV Adhesive Test Sieve is autoclaveable!

NOTE: UV Adhesive Test Sieves are not recommended 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.

A UV Adhesive Test Sieve is a perfect choice for most dry sieving applications.

Welded Test Sieve
Welded Test Sieve

Welded Test Sieve – shown
Looking into the sieve.Inset – shown looking at the underside of the sieve

Welded Construction

A welded Test Sieve has the sieve cloth continuously resistance spot to the sieve frame.The individual spot welds are overlapped, no voids thus ensuring that all product goes through the sieve screen, not around it.The Sieve Cloth is welded directly to the sieve frame; no filler metal is used. Whether a coarse mesh sieve or a fine mesh sieve 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 critical pharmaceutical applications.

‘Both coarse mesh and fine mesh sieves can be supplied in a welded construction’.

NOTE: Welded Test Sieve item numbers are not listed on the web site. Should you require a price quote on a Welded Test Sieve please CLICK HERE