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+49 (0)3644 5058-0

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Laser diffraction – Sympatec Helos BF


For the particle size analysis we have, inter alia, the laser diffraction using a Sympatec Helos BF (0.1 up to 875 µm) available. The laser diffraction measuring system consists of a RODOS dispersing unit, coupled with a Helos BF spectrometer.

Image: © Sympatec

Particle size analysis of fine dry powders with the renowned dry disperser RODOS with vibratory feeder VIBRI inserted in the measuring zone of HELOS/BR




The following lenses are available:
  • R1, measuring range 0.1 up to 35 µm
  • R3, measuring range 0.9 µm up to 175 µm
  • R5, measuring range 4.5 µm up to 875 µm
The RODOS is a universal dry dispersing unit applicable for nearly all kinds of dry powders with particle sizes in the range of < 0.1µm up to approx. 875 µm. The combination of feeding and dispersing enables a smooth, complete and product adaptable dispersion.





Image: © Sympatec
Precision vibratory feeder VIBRI


Principle of operation


The particles rest in the vibratory feeder VIBRI. Now the chute moves fast up and forward and accelerates the particles. The chute moves fast back downwards. At the reversal point of the chute movement the particles leave the chute. The determination of the particle size results from the degree of diffraction of the laser light.











Example of a laser diffraction analysis:



















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ACU PHARMA und CHEMIE GmbH
Am tiefen Graben 6, DE-99510 Apolda
Phone: +49 (0)3644 5058-0
Fax:     +49 (0)3644 5058-99
www.acu-pharma.com
contact(at)acu-pharma.com