W.S. Tyler RO-TAP® E Electromagnetic Sieve Shaker: Calibration

For decades, mechanical sieve shakers were the gold standard when conducting a test sieve analysis. But as more material began to fall under strict regulations, lab technicians sought a device that could test agglomerated material while staying true to traditional test sieve analysis techniques.

Continue reading “W.S. Tyler RO-TAP® E Electromagnetic Sieve Shaker: Calibration”

RO-TAP® Mechanical Sieve Shaker: Performance Testing

In the world of particle size analysis, RO-TAP® products have gained a reputation for being reliable and long-lasting sieve shakers. The W.S. Tyler RO-TAP RX-29 and RX-30, in particular, have even been written into dozens of industry standards as tried and true particle size analysis equipment.

Continue reading “RO-TAP® Mechanical Sieve Shaker: Performance Testing”

W.S. Tyler RO-TAP® E Pure Review



If you work in an industry that relies on particle size analysis to improve quality control protocols, odds are you have come across test sieve shakers. If not, to put it simply, they are devices designed to agitate stacks of test sieves to generate a distribution curve that provides insight into the size of the individual particle of a sample.

Continue reading “W.S. Tyler RO-TAP® E Pure Review”

Understanding the RO-TAP RX-29 E Premium Remote

Test sieves and test sieve analysis have been a fundamental asset to quality control for hundreds of years. But as time passed and technology began to consume the world we live in, demand to create a more automated way to test material while staying true to the reliability of traditional test sieve analysis has developed.

Continue reading “Understanding the RO-TAP RX-29 E Premium Remote”

What Is a RO-TAP RX-29 E Premium? (Definition, Function, and Cost)



For centuries, test sieve analysis has been used to check that the individual particles of a product are of a certain quality. As it has come to be regarded as highly reliable, an increased amount of manufacturers and suppliers from a wide range of industries began including the particle analysis practice into their quality control program.

Continue reading “What Is a RO-TAP RX-29 E Premium? (Definition, Function, and Cost)”

What Is a RO-TAP® RX-29 E Pure? (Definition, Operation, Cost)

From the coarse particle found in the aggregate industry to the finer particles seen in the pharmaceutical industry, particle size analysis is essential to most quality control programs. Test sieve analysis, in particular, is a particle analysis method that has been practiced for centuries, making it one of the most reliable forms of particle analysis.

Continue reading “What Is a RO-TAP® RX-29 E Pure? (Definition, Operation, Cost)”

What Is a RO-TAP® RX-94 Sieve Shaker? (Definition, Function, and Cost)



Test sieve analysis is considered one of the oldest, most reliable particle analysis techniques practiced today. While hand sieving was initially used to conduct test sieve analysis, sieve shakers were created to speed up the process and reduce user error, ultimately increasing the accuracy and repeatability of results gathered.

Continue reading “What Is a RO-TAP® RX-94 Sieve Shaker? (Definition, Function, and Cost)”

What Is a RO-TAP® RX-812 Sieve Shaker? (Definition, Operation, Cost)



In the world of particle size analysis, test sieve analysis is possibly the oldest method of testing the size and consistency of the particles of a product. As time went on, technology gradually started playing a more significant role in gathering accurate and repeatable results.

Continue reading “What Is a RO-TAP® RX-812 Sieve Shaker? (Definition, Operation, Cost)”

What Test Sieves Should I Use With My RO-TAP® Sieve Shaker?

Test sieve analysis is a centuries-old particle analysis technique that several industries utilize to determine the particle sizes in a product and guarantee a certain quality level. Whether you are testing dry material or need to incorporate water to allow for adequate particle movement, there is a test analysis method that can accommodate your needs.

Continue reading “What Test Sieves Should I Use With My RO-TAP® Sieve Shaker?”

Mechanical Sieve Shakers vs. Sonic Sifters: Which Should I Choose?



From agriculture to aggregates to pharmaceutical drugs, particle size analysis is one of the most integral methods in the world when it comes to industrial quality control. Failure to invest in a complete and thorough particle analysis process often results in inconsistent and ineffective products that hurt a brand’s reputation. 

With several particle size analysis equipment, such as sonic sifters and mechanical sieve shakers, on the market, lab technicians must do the research necessary to ensure they select the instrument that will best accommodate their operation.

Having said that, which particle size analysis instrument should you be using: a sonic sifter or a mechanical sieve shaker? 

The simple answer is that it comes down to the material you are working with. 

As pioneers of the mechanical sieve shaker, the RO-TAP RX29, W.S. Tyler is here to use its 140 years of particle analysis experience to ensure you are using the best equipment for your needs.

With that, this article will provide insight into:

  • What a sonic sifter is
  • What a mechanical sieve shaker is
  • How to use both devices
  • The application both devices excel in


What Is a Sonic Sifter?

Sonic sifters are machines that create a vacuum of air through the use of sonic waves. The devices also employ a bladder at the bottom of the sieve stack to create a unique tapping motion. 

As this tapping comes from the bottom, the particles slam against the above sieve, similar to an Alpine Air Jet Sieve e200 LS’s functions. This ensures any agglomerated particles get adequately broken down, and accurate results are achieved.


What Is a Mechanical Sieve Shaker?

Mechanical sieve shakers, such as the W.S. Tyler RO-TAP RX29, are machines that employ a motorized system to help particles make their way through a stack of test sieves. Each element of a mechanical sieve shaker works together to create the oscillating and tapping motions particles need to find each sieve’s mesh openings.


Mechanical sieve shakers, in particular, have been used for several decades and have proven to provide some of the most accurate, reliable, and repeatable results. It’s because of this that the RO-TAP sieve shaker is in dozens of industry standards.


How To Use a Sonic Sifter

Before using a sonic sifter, you must obtain a representative sample. After splitting your sample, you then assemble your sieve stack. 

You will then need to assemble the fine particle collection assembly, which consists of a fine particle collection bladder and its holder hardware. You should then evenly distribute the representative sample over the top sieve in the stack.

At this point, the sieve stack should be placed on top of the fine particle collection assembly. 

To ensure the sieve remains intact during testing, you need to place the sieve lock mechanism over the sieve stack. Be sure to press down until the mechanism snaps into place. 

You can now place the sieve stack into the sonic sifter unit. You will now need to release the clamps at the bottom of the sieve stack lock mechanism. This will cause the stack to lock into the sonic sifter’s sieve chamber. 

Now, close the protective cover, set the testing parameters, and turn the unit on. 


How To Use a Mechanical Sieve Shaker


Before using a mechanical sieve shaker, you must first obtain a reliable representative sample. Once obtained, place your sieve stack (without the sample material) in your sieve shaker.

You then pour your representative sample into the top sieve of your sieve stack. To achieve optimal results, pour your sample as evenly around the surface of the top sieve as possible.

Once the representative sample has been poured in its entirety, place the test sieve lid on. This lid is used to prevent the sample material from falling off the edges and, in addition, is not durable enough to withstand the tapping of the sieve shaker hammer (performs tapping motion).

A second, more robust lid is then placed on top of the test sieve lid to soften the impact. You can now drop the hammer into place.

At this point, you configure the test settings and power on your machine. Once the sieve shaker has finished its cycle, it will turn itself off.


Sonic Sifter Applications

As stated above, Sonic Sifters carry out particle analysis similar to the Alpine Air Jet Sieve e200 LS. This leaves the unit with a significant advantage when working with agglomerating material. 

Compared to a mechanical sieve shaker, the airflow inside a sonic sifter does a better job at separating individual particles that tend to agglomerate than the motion from a sieve shaker.

That said, Sonic Sifter can prove to be more efficient than Alpine Air Jet Sieves as they don’t require the time-consuming process of testing the material sieve by sieve.


Mechanical Sieve Shaker Applications

Mechanical sieve shakers are designed for use in a wide range of industries to test and separate particles. Several attachments can be attached to the device to expand its capabilities. 

Particle-Size-Analysis-of-AggregateWith that, mechanical sieve shakers can sieve pretty much any material you need it to wet, dry, large, or small down to 20 microns. This, of course, is all dependent on the sieves you use in your shaker.

Having said that, the finer the particle, the harder it will be to yield accurate sieve results with a mechanical sieve shaker. 


Noise Level

As sonic sifters use sonic waves to generate a column of air and tapping motion to promote particle movement, some noise should be expected. However, sonic sifters stand out as one of the more quieter pieces of equipment and are much quieter than mechanical sieve shakers. 

This is because mechanical sieve shakers utilize a hammer to create the tapping motion needed to assist particle agitation and facilitate particle movement. As a result these machines can be relatively noisy.

The RO-TAP RX29, for example, runs at around 85dB. That said, the noise level is heavily determined by the material you work with. 

A sound enclosure cabinet can be purchased to reduce the noise of mechanical sieve testing.



Currently there are two mechanical sieve shakers offered by W.S. Tyler: The RO-TAP RX-29 and the RO-TAP RX-30. The RX-29 is designed to work with 8-inch test sieves whereas the RX-30 is designed to work with 12-inch test sieves and two of the most widely used mechanical sieve shakers. 

That said, the RX-29 costs $3,299.03 whereas the RX-30 costs around $3,774.27.

In terms of sonic sifters, there are a handful of models on the market. Much like the RO-TAP product line, the biggest difference between these models are the type and size of test sieves you use.

With that, you can expect to pay anywhere from $8,128.02 to $8,992.49 if you desire to implement a sonic sifter into your operation.

NOTE: The price ranges of both devices does not include test sieves.  


A Reliable Particle Size Analysis Starts With Reliable Equipment

Particle size analysis is one of the most reliable methods in the world when it comes to enhancing countless industries’ quality control. Without it, odds are your end product will not adhere to industry standards or meet customer expectations.

Now, to conduct a successful particle size analysis, you must employ equipment, such as sonic sifter or mechanical sieve shakers, that will deliver accurate and repeatable results for your operation.

Sonic Sifters are devices that use sonic waves and vertical/horizontal tapping to help particles move throughout a sieve. This unique combination of movement makes sonic sifter ideal for analyzing fine particles that often become agglomerated.

Mechanical Sieve Shakers use a motor to create an oscillating and tapping motion to promote particle movement. As they have been used for decades, lab technicians can use them for most particle size analysis; however, results may become more inconsistent with fine particles.

Having said this, no matter which machine you choose, the test sieves that get placed into the device can and should be certified regularly for the best results. 

Having worked in the world of particle size analysis for over 140 years, W.S. Tyler is here to ensure your equipment continues to produce reliable results for years to come. 

For more information about test sieve certification, refer to our Certification and Testing Services Page.

What Is a RO-TAP® Sieve Shaker Lab Kit? (Cost, Setup, and Maintenance)

Since the 1930s, the W.S. Tyler RO-TAP® Sieve Shaker has been integral to the production of accurate and reliable test sieve analysis results. Having been written into dozens of industry standards, the RO-TAP is truly a pioneer of the particle size analysis industry.

Continue reading “What Is a RO-TAP® Sieve Shaker Lab Kit? (Cost, Setup, and Maintenance)”