W.S. Tyler has been manufacturing Test Sieves since the early 1900s. The W.S. Tyler Company was instrumental in developing the standards which govern the industry today.

Test Sieves are made to the current ASTM E-11, and ISO 3310-1 specifications. The sieve cloth used in production is exclusively woven by Haver & Boecker and W.S. Tyler, assuring consistent, high quality products. Both Haver & Boecker and W.S. Tyler are ISO 9000 Series Registered for their Quality Management Systems.

Test Sieve products are produced in a variety of diameter sizes (as detailed below), in both brass and stainless steel. W.S. Tyler serializes and supplies a Certificate of Compliance with each test sieve. Stock items include 8", 12", 3", 200mm diameters and Air Jet system sieves. A variety of Wet Wash sieve designs and a complete assortment of Top Covers and Receiver Pans are also available. Special application products include Turbidimeter Sieves and Carbon Hardness Pans. See the Laboratory Services Section for additional information.






Test Sieve Product Features

3" Diameter Test Sieves Made in brass/brass, brass/stainless and stainless/stainless construction Overall Height-Full: 1-3/4"; Half: 1-1/4" Depth to cloth-Full: 1-1/4"; Half: 5/8"	8" Diameter Test Sieves Made in brass/brass, brass/stainless and stainless/stainless construction Overall Height-Full: 2-5/8"; Half: 1-5/8" Depth to cloth-Full: 2"; Half: 1"
12" Diameter Test Sieves Made in brass/brass, brass/stainless and stainless/stainless construction Overall Height-Full: 4-1/4"; Intermediate: 3"; Half: 2-5/8" Depth to cloth-Full: 3-1/4"; Intermediate: 2"; Half: 1-5/8"	6" Diameter Test Sieves Made in stainless/stainless construction Overall Height-Full: 2-5/8"; Half: 1-7/8" Depth to cloth-Full: 1-3/4"; Half: 1"
10" Diameter Test Sieves Made in stainless/stainless construction Overall Height-Full: 4" Depth to cloth-Full: 3"	18" Diameter Test Sieves Made in brass/stainless construction Overall Height-Full: 5-1/2" Depth to cloth-Full: 4-1/2"

GOLD SERIES

Gold Series Test Sieves are fabricated using a fine mesh screen cloth produced to extraordinary "tight" tolerances. The product assures the user, the permissible variation of the average openings of the instrument will be one-half (50%) of the allowable ASTM or ISO specifications. The Gold Series products are available in stainless steel frames and cloth, on a "Special" basis, and sell at premium prices. (USA No. 20 through 500).

• Made in stainless/stainless construction
  
• Designed as "masters" for internal quality assurance programs.
  
• 8" diameter
  
• Each test Sieve is optically examined, sterilized and supplied with complete traceable documentation, including information on actual opening sizes.

200 MM & JET SERIES
Air Jet Test Sieves Made in stainless/stainless construction For use with air jet sieving systems, 200 mm Diameter frame, with rubber seal. Overall Height - 1-3/4" Depth to Cloth - 1-1/8"	200 mm Test Sieves Made in brass/stainless and stainless/stainless construction International Standard Size with metric opening cloth, made in compliance with ISO 3310-1 specification Overall Height - Full: 2-5/8"; Half: 1-5/8" Depth to Cloth - Full: 2"; Half: 1"

WET WASH TEST SIEVES

• Made in brass frame, stainless steel mesh construction
• Designed to be used in cement and other fine powder analysis where
  water is introduced
• Standard 8" diameter sieves are available in 4" and 8" heights. 12" diameter sieves are available in an 8" height. 3" diameter sieves are available in a 4" height.
• All products are supplied with drain holes in the lower frame.

Laboratory Services
W. S. Tyler offers five value added services for fine dry particle size distribution
analysis. Two on-site working laboratories provide service and support to our
dealers as well as our product users.

CERTIFICATION
"Certified" test sieves are standard production products, specifically reexamined for assurance to referenced specifications. The sieve is serialized and supplied with documentation, traceable to NIST, detailing the openings and wire diameters of the mesh. W. S. Tyler uses a View Basic 8 Image Analyzing Machine to perform our "Certification" and "Rectification" services. This state of the art equipment is capable of measuring to tolerances of ± 2.5 microns.

In addition the View Bazic 8 allows W.S. Tyler to measure considerably more openings and wire diameters than specified by ASTM E-11. The added measurements and the pattern of examination offer statistically more valid information.

RECERTIFICATION

Test Sieves are precision laboratory Instruments. They are gauges and require ongoing certification as such. With the popularity and enhanced awareness of detailed quality control systems, the demand for "Recertification" of "in-use" test sieves is growing daily.

W.S. Tyler performs the identical examination and provides the same documentation as with our "Certified" program.

Recommended Sieve Recertification Schedule

Aperture	Schedule*
5 inches to .25 inch	80 uses or 36 months
US No. 1/2 to US No. 12	70 uses or 30 months
US No. 14 to US No. 40	60 uses or 24 months
US No. 45 to US No. 140	50 uses or 18 months
US No. 170 to US No. 325	35 uses or 12 months
US No. 400 to US No. 635	20 uses or 6 months
*Whichever comes last

MATCHING
"Matched" test sieves are recommended for applications requiring critical, multiple location testing and results comparison. The products are selected and "Matched" in Tyler's laboratory by repeated performance testing. The resulting products significantly reduce test analysis variations. The sieve is serialized and supplied with documentation detailing the performance results vs. a "Master" series of test sieves to a tolerance within ± 2.5%. This service is available in the range of USA No. 8 through USA No. 325.

CORPORATE CALIBRATION PROGRAM
Our Corporate Calibration program allows you to outsource your test sieve calibration requirements to our in-house laboratories. It has proven to be ideal for organizations that have multiple production facilities where particle size analysis uniformity is critical. Features include:

• An exclusive Master Set of test sieves is customer owned and is Certified and traceable to NIST. This Master Set is optically examined and chosen to ensure the test sieve openings will be in a selected range that is much "tighter" than allowable ASTM tolerances.
• Master Set of test sieves and test media will be maintained in a controlled laboratory environment. The program includes an annual recertification of the Master Set.
• All future new test sieve requirements will be performance matched/calibrated
  to your exclusive Master Series to a result tolerance of ± 2.5%.
• All related service fees as detailed above are offered at discount rates.

GENERAL PARTICLE ANALYSIS
Our dry fine article Analysis Service is available on a flat rate basis. Detailed results are supplied per customer requirements.

Website : www.wstyler.com
.