Type 317 Stirrer-Timer


The model Type 317 is a replacement for the Type 133/131. Test Stirrer/Timer performs to the EC standard and is recommended by the Water Research Centre for assessing the stability of a sewage sludge.
Often used in conjunction with the CST apparatus, the sludge is subjected to high-speed stirring simulating different degrees of imposed shear. This will asses the physical strength of the conditioned sludge flocs, and determine the stability of sludge for different types of dewatering equipment.



  • A motor over-ride switch enables continuous sludge stirring.
  • A detachable stirring paddle makes it versatile and easy to keep clean.
  • Stir times of 1 second steps from 1-99 can be selected.
  • A set time button to toggle through the standard times of 10 – 30 – and 60 seconds.
  • Comes complete with two 25ml beakers.
  • A carrying case specifically designed for transporting the unit is also available.The following stir times correspond to mechanical dewatering systems.

Belt press         0
Vacuum filter   10
Filter press      40
Centrifuge        very variable
Download 317 pdf

Additional information

Weight 8 kg
Dimensions 23 × 15 × 33 cm

1 review for Type 317 Stirrer-Timer

  1. Masumi Yamaguchi

    We’re using this product in Japan.
    We are considering the purchase of a new product in the aging of the product.
    Please introduce a contract store that can be purchased in Japan, including the aftermarket parts.

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