You may not be aware that several different materials are used in different types of test sieves. Our stainless steel Test Sieves have many advantages over their older counterparts. Brass Test Sieves were the old standard because they used to be cheaper than stainless steel, but that is no longer the case. Stainless steel sieves are durable and versatile. We manufacture test sieves using pure tin solder, UV adhesives and welded construction.
Let's take a look at what each of these three types of sieves has to offer and how long each one lasts.
Perforated Filter
Stainless steel test sieves can be manufactured using pure tin welded sieve fabric. Pure tin welded sieves are well suited for most wet and dry sieving applications, including food, beverage and many medical applications.
These sieves are FDA compliant because we affix the sieve cloth to the bottom so there is little evidence of pure tin solder inside the sieve.
Because of the tin solder, these sieves should be operated at 350 degrees Fahrenheit. They are also not suitable for applications with caustic cleaners or acids, as they can cause solder corrosion.
This test sieve material uses a polymeric UV adhesive to attach the sieve fabric to the bottom of the frame. Because it attaches to the bottom, there is virtually no adhesive inside the sieve. UV adhesive sieves are fully autoclavable and are ideal for most dry sieve applications.
Because of the adhesive used, these sieves are not a good choice for wet sieve applications or setups with high humidity or moisture content. These conditions can cause the adhesive to corrode over time.
Among test sieve manufacturers, welded construction is the gold standard for sieves. We overlap the welds on the sieve to ensure that all material passes through your sieve and that nothing "bypasses" the fabric. These sieves contain no filler metal at all. This means that there is no contact between your sieved material and anything other than the stainless steel screen. These are some of the best sieves for sieve analysis.
These sieves are suitable for almost any wet or dry screening application. The fully welded construction makes them the most durable sieves available. They can be made with any grade of mesh and still be welded. They are ideal for the pharmaceutical and other industries where errors are minimal.
The types of sieves available on the market have evolved over the past few years. When considering the type of sieve material, keep the following points in mind.
● Brass is no longer the standard material for test sieves due to rising costs and the general advantages of stainless steel.
● Stainless steel screens come in three types: tin weld, UV adhesive and welded.
● Tin solder is a good choice for most applications, but should not be used for corrosive chemicals, acids, or temperatures over 350 degrees Fahrenheit.
● UV adhesives are autoclavable and are suitable for most dry screen applications. These screens will corrode in wet conditions that are not suitable for wet screening.
● Welded screens are the gold standard and are suitable for all wet or dry applications.
If you have any questions about how these new screens can be used in your industry or your application, please contact our experts today. As one of the professional screen manufacturers, we know how to make your operation run smoothly.
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