Particle Size Analyzer automates sieve analysis process.

Press Release Summary:

Using ASTM-approved 8 in. round test sieves, PC-controlled GRADEX® 2000 analyzes individually loaded samples and multiple samples staged for continuous testing. System shakes and taps samples with same stroke and frequency as manual shakers. It classifies and weighs each sieve fraction, calculates and stores weight values, and reports data in format compatible with Windows-based QC/SPC software. GRADEX 2000 has balance capacity of 5000 g and balance resolution of 0.1 g.

Original Press Release:

GRADEX® 2000 Particle Size Analyzer....


CINCINNATI, OH (November 29, 2006) - The GRADEX® 2000 from Rotex, Inc. is a patented PC-controlled device, which fully automates the sieve analysis of dry granular materials. By fully automating the entire sieve analysis process, GRADEX 2000 frees up technicians to perform other work and provides analysis on a more frequent and timely basis, allowing for closer control of raw material receipts, materials in process and finished product.

Using standard ASTM approved 8" round test sieves-either full or half-size height-GRADEX 2000 can analyze individually loaded samples, multiple samples staged for continuous testing. The standard round test sieves can easily be inserted and changed to suit specific test requirements.

Using preset test configurations, GRADEX 2000 shakes and taps the samples using the same stroke and frequency as typical manual shakers. The GRADEX 2000 automatically classifies and weighs each sieve fraction, calculates and stores weight values, and reports the data to a PC in a format compatible with most Windows-based QC/SPC software.

Performing analysis at the point of sample provides immediate results, even on the plant floor. Automation elevates test quality by eliminating manual steps where operator errors often occur, and the electronic data transfer eliminates transposition and calculation errors. In addition, because GRADEX 2000 automatically brushes the sieves evenly and consistently, test repeatability is improved by avoiding sieve damage due to overbrushing.

GRADEX 2000 can be used for the processing of dry granular materials such as chlorine, fertilizer, pharmaceuticals, and many other chemicals; for plastic pellets and resins; for stone, clay and glass; for mineral and mining processing, such as sand, limestone and soda ash; and for processing of food materials such as citric acid, sugar, tobacco, and salt.

The GRADEX 2000 has a balance capacity of 5000 grams, and a balance resolution of 0.1 gram. Models are available with six sieves, or nine half-height sieves with manual or AutoFeed options. An optional fan-cooled computer control cabinet, which houses the PC keyboard, monitor and printer is also available.

To determine exactly how much money and time GRADEX 2000 can save your company, use the simple GRADEX Analysis Wizard.

About Rotex, Inc.
Rotex, Inc. engineers and manufactures a full line of screening equipment including ROTEX(TM) Screeners and high capacity MEGATEX(TM) Screeners for particle size separation of grains, minerals, plastics and other dry solids; GRADEX® Particle Size Analyzers; and LIQUATEX(TM) Liquid/Solid Separators. The company serves a global market in such industries as chemical processing, food processing, mineral processing, plastics compounding and agribusiness. ROTEX Parts & Service offers a full range of genuine parts and rebuild services available through Rotex headquarters in Cincinnati, Ohio.

For more information on the GRADEX(TM), or to obtain more information on all the ways ROTEX Screeners can benefit your screening operations challenges, contact Rotex, Inc., 1230 Knowlton St., Cincinnati, OH 45223,, (800) 453-2321, Fax (513) 541-4888 or e-mail

All Topics