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20um (SS291)
20um (SS291)

20um (SS291)

5 bottle set, 0.25g per bottle.

  • Unique microsphere method of sieve calibration
  • Mean aperture sizes traceable to NIST and NPL
  • Measure over 1 million apertures per minute
  • Typical calibration time of about 1 minute
  • Method analyses over 80% of the sieve surface
  • Accuracies and repeatabilities better than 1µm 
  • Results independent of sieve shaking method
  • Single-shot bottles remove operator bias
  • No need to send sieves away for calibration
Quick and simple to use!
Empty the complete contents of a bottle onto the sieve and shake evenly over the surface for 1 minute. Calculate the percentage passing and read off the mean aperture size from the calibration graph.

Useful Downloads

Using different diameter sieves?  Click here for advice.
For technical information / chemical composition of the microspheres click here
For SDS please see Useful Literature to Download

RRP: £112.20
Our Price: £87.12

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Sieve Calibration - A New Simple But High Precision ApproachSieve Calibration - A New Simple But High Precision Approach
Author: G R Rideal, J Storey, T R Morris, Whitehouse Scientific
Published:Particle & Particle Systems,17(2000)1-7,Wiley


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