Generation of solid aerosols from suspensions, solutions and biological agents
Solid aerosols from suspensions, e.g. with biological agents and solutions such as NaCl and KCl, are required for many applications in research, development and quality assurance. For the comparability of filter media, measuring instruments and filters, NaCl/KCl aerosols or aerosols from biological agents are prescribed as test aerosols in various standards. Test aerosols must be produced constantly over the test period in terms of particle size distribution and particle concentration in order to be worthy of the name. In addition, the particle size distribution and concentration must be reproducible. A specially developed nozzle guarantees these requirements by preventing crystallization of the salt crystals at the nozzle outlet. Thus, the particle size spectrum can be reproducibly adjusted in the range from approx. 5 nm to 15 μm depending on the solution concentration. The AGK 2000 is available with vertical or curved drying section and optionally pressure-resistant up to 10 bar.
Function
Two-substance nozzles are usually used for dispersing liquids, suspensions and solutions. For the dispersion of salt solutions, the conventional atomization principles such as the Collison Nebulizer, which was also built by Palas®, are not particularly suitable, since salt crystals deposit at the outlet of the nozzle and lead to partial clogging of the nozzle system.
A special nozzle developed by Palas® enables the atomization of salt solutions with highest dosing constancy.
Advantages
- Very good short-term and long-term dosing constancy
- Large adjustable particle size range
- Easy filling of the storage tank
- Large storage tank (500 cm3)
- Robust design, proven in industrial applications
- Simple operation
- Reliable function, high reproducibility
- Low maintenance
- Reduces your operating costs
- Filter industry:
- Passenger car cabin filters
- ASHRAE Room Air Filter
- engine air filter
- breathing protection filter
- Chemical and pharmaceutical industry
- Generation of tracer particles
- flow visualization
- aerosol research
