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T: 514-354-2511
T: 1 800 463-4363
F: 514-354-6948
Screener AS 450 Material Testing

Sieve Shaker from Retsch

Product Code:AS 450 Control

Need more Info? (514) 354-2511 - 1-800-463-4363

The AS 450 control sieve analysis is used in laboratories for research and development, quality control of raw materials, intermediate products and finished products as well as production monitoring. The controlled solenoid drive enables optimum adaptation to any material to be screened. Even with short sieving times, the camera convinces by high precision separation.

The AS 450 control sieve analysis is the first sieve to oscillatory movements in three dimensions for RETSCH sieves of 400 mm and 450 mm in diameter. It is suitable for sifting dry and wet. The electromagnetic drive powered by the patented CET technology allows an amplitude up to 2.2 mm, whatever the load, up to 25 kg of sieved material. Thus, the AS 450 significantly outperforms all sifters for sale on the market with conventional electromagnetic drives or unbalanced vibration motors.

Application examples
Coal, clinker, coke, construction materials, filler, minerals, ores, plastics, chemicals, sand, soils, ...


Product Highlights
  • for dry and wet sieving
  • command with the EasySieve optional software via the RS232 serial port, evaluation and documentation of results of great simplicity
  • meets the requirements of ISO 9001 for the control of measuring and testing instruments
  • maintenance free
  • ease of use, ergonomic design
  • Excellent separation efficiency and short sieving times
  • efficient electromagnetic drive
  • 3-D throwing motion qui Ensures optimum use of the open sieve area and lets the sample move over Equally The Whole sieving area
  • THIS Technology for controlled amplitude, even in case of heavy loads (up to 25 kg)
  • up to 14 fractions by sieving
  • free digital adjustment of all process parameters (time, amplitude or sieve acceleration, interval)
  • can store up to 9 SOPs
  • mobile control unit for comfortable handling


Application separation, fractionation, determination of particle size
Scope of application chemicals / plastics, environmental / recycling, geology / metallurgy, engineering / electronics, building materials, glass / ceramics
Feed material powders, bulk materials, suspensions
Measuring range * 25 microns - 125 mm
Movement of the material to be screened angular momentum projection
Load / max amount. of material to be screened 25 kg
Max. fractions 13/9 (min. 3)
Max. the sieve stack 50 kg
Amplitude digital, 0.2 -> 2.2 mm
Bottom sieve acceleration 0.6 -> 7.1 g
Time Display digital, 1-99 min
Intermittent operation mode 10-99 s
Storable programs (SOP) 9
Suitable for dry sieving yes it does
Suitable for wet sieving yes it does
Serial port yes it does
Diameters of usable screen 400 mm / 450 mm
Max. the sieve stack 963 mm
Clamping systems "Standard", "comfort", each for dry and wet sieving
Given power different voltages
Power Connection single phase
W x H x D 714 x 435 x 658 mm
Net weight ~ 200 kg
Documentation Video operation and application
Standards EC
* Depends on the sample and instrument configuration / settings


Operating principle
The sieve shaker AS 450 control works with an electromagnetic drive with RETSCH holds the patent (EP 0642844). This system provides a three-dimensional projection of motion which distributes the sample uniformly over the entire surface of the sieve. It is efficient, highly effective and significantly reduces time to screening. This technology is virtually indestructible and requires no maintenance.


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