If you sieve regularly, you also have to clean regularly: because clean test sieves are a central prerequisite for perfect sieving results. Deposits and stuck particles reduce the permeability of the metal wire mesh sieve - and this reduces the reproducibility and accuracy of your results.
Simple cleaning often does not remove all stuck particles from the test sieve. To thoroughly and gently remove even the finest particles from the test sieve, you should therefore work with an ultrasonic cleaning device. This cleans more thoroughly and saves time at the same time.
What options does Haver & Boecker offer you for sieve cleaning?
For test sieves with a diameter of up to 230 mm we offer the HAVER USC 200 S. If several sieves are to be cleaned at the same time, we recommend the HAVER USC 200 Multi. Here you can clean up to 5 test sieves at the same time. For sieve diameters up to 500 mm, we offer the HAVER USC 500 S.
|HAVER USC 200 S||HAVER USC 500 S||HAVER USC 200|
|Multiple number of sieves||1||1||5|
|Sieve diameter||≤ 230 mm||≤ 500 mm||≤ 230 mm|
|Oscillating tank, inner||240 x 140 mm dia.||600 x 245 mm dia.||500 x 300 x 300 mm|
|Filling capacity||6 l||57 l||40 l|
|Drain||-||yes, ball valve||yes, ball valve|
|Outer dimensions||304 x 335 mm||650 x 455 mm||560 x 360 x 500 mm|
|Weight||approx. 5 kg||approx. 21 kg||approx. 27 kg|
|Mains connection||220-240 V||220-240 V||220-240 V|
|Ultrasonic frequency||37 kHz||37 kHz||35 kHz|
|Total power consumption||150 W||600 W||n.a.|
|Ultrasonic peak power||600 W||2400 W||2 x 1000 W|
|Sound pressure level||< 70 dB||< 70 dB||n.a.|
|Permissible ambient temperature||+5°C to +40°C||+5 °C to +40°C||+5 °C to +40°C|
Practical tip: The correct treatment of the finest mesh sizes
Test sieves with fine mesh sizes up to 500 µm must be cleaned in an ultrasonic bath, otherwise they tear quickly. You should make sure that no alkaline cleaning liquids are used. These damage the surface of the wire mesh. After the ultrasonic bath, rinse the test sieves with clear water and blow out the sieve bottom with compressed air to remove any streaks. Let the sieves drain for about 5 minutes and dry for a maximum of 30 minutes at a temperature of 80°-100°C. You can remove any remaining trapped boundary grains by lightly tapping the sieve frame against a wooden or rubber pad. Do not use brushes or paintbrushes.