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AGK 2000

Generation of solid particles out of suspensions, solutions and biological agents

    Excellent short-term and long-term dosing constancy
    Wide adjustable particle size range
    Easy filling of the reservoir
    Large reservoir (500 cm3)
    Robust design, proven in industrial applications
    Easy to operate
    Reliable function, high reproducibility
    Little maintenance required
    Reduces your operating costs

Description

Fig. 1: AGK 2000 with vertical or curved drying section

Solid particle aerosols produced from suspensions, e.g. with biological agents, and solutions such as NaCl and KCl, are required for numerous applications in research, development and quality assurance. NaCl/KCl aerosols or aerosols produced from biological agents are prescribed as test aerosols in various standards to ensure comparability of filter media, measuring equipment and filters. Test aerosols, to deserve to be called such, must be generated consistently in terms of particle size distribution and particle concentration over the test time period. Furthermore, it must be possible to reproducibly produce the particle size distribution and the concentration. A specially developed nozzle ensures that these requirements are met by preventing the crystallization of the salt crystals at the nozzle outlet. The particle size spectrum can thus be adjusted reproducibly in the range from approx. 5 nm up to 15 µm, depending on the concentration of the solution. The AGK 2000 isavailable with straight or curved drying column and optionally pressure-resistant up to 10 bar.

Function

For dispersing liquids, suspensions and solutions, two-substance nozzles are mostly used. For dispersing salt solutions, the conventional atomization methods, such as that of the Collison Nebulizer, that was also built by Palas® , are not particularly suitable, since salt crystals precipitate at the nozzle outlet and lead to partial obstruction of the nozzle system.

Fig. 2: Schematic diagram of the AGK 2000 with cyclone

A special nozzle developed by Palas® enables the atomization of salt solutions with highest dosing constancy.

Measurement data

Dependency of the particle distribution from the concentration of the solution (Figs. 3 and 4). Measuring device: welas® digital system from Palas®.

Fig. 3: Representation of the volume-based integral distribution of a 20 % KCl solution and a 0.15 KCl solution

Fig. 4: Representation of the number size distribution of a 20 % KCl solution

Datasheet

Volume flow

3 – 10 l/min

Weight

approx. 3 kg

Particle material

NaCl, KCL, biological agents and other particles in suspensions

Dosing time

Several hours nonstop

Maximum particle number concentration

ca. 107 particles/cm3

Particle size range

0.005 – 15 µm

Carrier/dispersion gas

random (generally air)

Pre-pressure

4 – 8 bar

Compressed air connection

Quick coupling

Aerosol outlet connection

Øinside = 20 mm, Øoutside = 30

Volume flow (accessories)

6 – 20 l/min (drying column)

Filling quantity

300 ml

Benefits

    Excellent short-term and long-term dosing constancy
    Wide adjustable particle size range
    Easy filling of the reservoir
    Large reservoir (500 cm3)
    Robust design, proven in industrial applications
    Easy to operate
    Reliable function, high reproducibility
    Little maintenance required
    Reduces your operating costs

Applications

    Filter industry:
      -   Car interior filters
      -   ASHRAE room air filters
      -   Engine air filters
      -   Respiratory filters
    Chemical and pharmaceutical industry
    Generation of tracer particles
    Flow visualization
    Aerosol research