Sieve Shakers

Sieving with a three-dimensional effect

RETSCH analytical sieve shakers are used in research and development, quality control and production monitoring. The patented electromagnetic drive of the sieve shakers AS 200 control, AS 300 control and AS 450 control produces a 3-D throwing motion which ensures opti- mum use of the open sieve area and lets the sample move equally over the whole sieving surface. These instruments feature digital amplitude adjustment which allows for sharp fractionizing of the sample even after very short sieving times. All sieve shakers of the series “control” come with an inspection certificate and can be calibrated. They are suitable as measuring instruments according to DIN EN ISO 9000 ff.

  • Sieving with 3-d effect
  • For dry and wet sieving
  • 9 parameter combinations can be stored
  • All-digital controls
  • Independent of power frequency, loading, age when working in sieve acceleration mode
  • Comparable and reproducible sieving results worldwide
  • Integrated interface
  • low noise, no maintenance required

Main areas of application

Chemicals, coal, coffee, fertilizers, fillers, flour, metal, powders, minerals, sand, seeds, soils, washing powder, cement clinker

AS 200 control
AS 300 control
AS 450 control
AS 400 control
AS 200 tap
AS 200 jet
Sieve Shaker AS 200 control
The AS 200 control is designed for sieves with a diameter up to 203 mm (8”). It covers a measuring range from 20 μm to 25 mm. The AS 200 control offers a decisive advantage: Instead of the vibration height, the sieve acceleration, which is independent of the power frequency, can be set. Thus, comparable and reproducible sieving results world-wide are guaranteed. The AS 200 is also available as “basic” version with analogue parameter setting and as “digit” version with digital time control and interval operation.
Performance data AS 200 control
Application separation, fractioning, particle size determination
Feed material powders, bulk materials, suspensions
Measuring range 20 um to 25 mm
Max. batch / feed capacity 3 kg
Adjustment of amplitude digital 0.2 - 3 mm
Suitable sieve diameters 100 mm to 200 mm / 8"
Sieve Shaker AS 300 control
The AS 300 control accepts sieves with a diameter up to 315 mm (12”). The measurement range lies between 20 μm and 40 mm. Due to the greater sieving surface, the average sieving time can be considerably reduced with this model. Another advantage is the high feed quantity of 6 kg which can be separated in one working run. Just like the AS 200 control, this siever allows for the setting of the sieve acceleration instead of the vibration height
Performance data AS 300 control
Application separation, fractioning, particle size determination
Feed material powders, bulk materials, suspensions
Measuring range 20 um to 40 mm
Max. batch / feed capacity 6 kg
Adjustment of amplitude digital 0.2 - 2 mm
Suitable sieve diameters 100 mm to 315 mm
Sieve Shaker AS 450 control
The AS 450 control is designed for 400 mm and 450 mm sieves. The measurement range lies between 25 μm and 125 mm . Due to the pow- erful electromagnetic drive, this sieve shaker achieves an amplitude of up to 2.2 mm which renders the separation process much more effective than with other sieve shakers of this type. The AS 450 control can separate sample amounts of up to 25 kg in one working run.
  • Excellent separation efficiency even with short sieving times
  • For high sieve loads (up to 25 kg)
  • Sieve stack up to 963 mm height, Ø 400 / 450 mm
  • Mobile operation panel for comfort- able handling
Performance data AS 450 control
Application separation, fractioning, particle size determination
Feed material powders, bulk materials, suspensions
Measuring range 20 um to 125 mm
Max. batch / feed capacity 25 kg
Adjustment of amplitude digital 0.2 - 2.2 mm
Suitable sieve diameters 400 mm to 450 mm

Main areas of application

AS 450 :
Cement clinker, chemicals. coal, coke, construction materials, fillers, minerals, ores, plastics, sand, soils

Sieve Shaker AS 400 control
The AS 400 control accepts sieve stacks from 100 to 400 mm (4” - 16”) diameter which allows for versatile use. The horizontal, circular siev- ing motion ensures exact separation of fine and coarse-grained products. The AS 400 is the only horizontal sieve shaker with all digital controls.
  • Measuring range 45 μm to 63 mm
  • All-digital controls
  • Easy operation
  • low-noise, no maintenance required
Performance data AS 400 control
Application separation, fractioning, particle size determination
Feed material powders, bulk materials, suspensions
Measuring range 45 um to 63 mm
Max. batch / feed capacity 5 kg
Adjustment of amplitude / speed digital 50 - 300 min-1
Suitable sieve diameters 100 - 400 mm

Main areas of application

AS 400 :
Building materials, compost, flour, grained moulding materials, milled grain, seeds, wood chippings

Sieve Shaker AS 200 tap
The AS 200 tap sieve shaker combines horizontal circular sieving with vertical tapping motions which reproduces the principle of hand sieving as is specified in various standards for particle size analysis. The uniform mechanical sieving motion produces reliable and reproducible measurement results.
  • Measuring range 20 μm to 25 mm
  • Robust, no maintenance required
  • digital timer
  • Integrated interface
Performance data AS 200 tap
Application separation, fractioning, particle size determination
Feed material powders, bulk materials, suspensions
Measuring range 20 um to 25 mm
Max. batch / feed capacity 3 kg
Adjustment of amplitude / speed fixed, 280 min-1, 150 taps
Suitable sieve diameters 200 mm / 8"

Main areas of application

AS 200 tap :
Abrasives, activated carbon, cement, diamonds, metal powder, spices

Sieve machine AS 200 jet
The air jet sieving machine AS 200 jet is particularly suitable for the sieving of light materials with particle sizes down to 10 microns. An industrial vacuum cleaner generates a jet of air which blows through a rotating slotted nozzle against the sieve mesh. The particles on the sieve are dispersed by impact on the lid and distributed all over the sieve surface. Each sieving process provides one fraction. The undersize particles can be collected in a cyclone for further treatment. A special feature of the AS 200 jet is the Open Mesh Function. This procedure greatly reduces the number of near-mesh particles allowing for optimum separation efficiency and reproduc- ibility. The AS 200 jet is designed for operation with RETSCH’s high quality sieves with 200 mm or 203 mm (8") diameter.
  • Measuring range 10 μm to 4 mm
  • Fast and efficient procedure
  • open Mesh function to reduce the number of near-mesh particles
  • Digital parameter setting
  • Optional cyclone and automatic vacuum control

Main areas of application

Construction materials, spices, catalysts, plastics, flour, pharmaceuticals

Performance data AS 200 jet
Application separation, fractioning, particle size determination
Feed material powders, bulk materials, suspensions
Measuring range 10 um to 4 mm
Max. batch / feed capacity 01 kg
Adjustment of amplitude / speed digital, 5 - 55 min-1
Suitable sieve diameters 200 mm / 8"