Air Filter Testing
Aerosol Measurement
Topas LAP 323
The Topas LAP 323 uses two laser diodes with different wavelengths to enhance high resolution particle measurements in the size range of 0.15-40µm. It features up to 128 size channels and can handle particle concentrations up to 10,000/cm³.
Filter Efficiency Measurement System FMS 374
The Topas FMS 374 is a simple setup that enables the user to achieve filter media efficiency results quickly, with a special focus on the current need for face mask media product development and production control. Note there is a short manufacturing lead-time on this product, allowing for quick delivery.
LAP 322
The LAP 322 Aerosol Particle Size Spectrometer is a general purpose instrument which provides high resolution measurements over the 0.2 – 40 µm size range. It features a wide concentration range (maximum of 104particles/cm3) and a comprehensive software package which makes it ideal for filter testing, indoor air quality measurements, atmospheric research, and environmental monitoring.
Pore Size Analysis
Pore Size Meter for Nonwovens and Porous Materials PSM 165
The PSM measures the Bubble Point Pore Size, Distribution of Mass Flow and Mean Flow Pore Size of porous materials. This bench top instrument operates over a pore size range of 0.5 to 600 µm.
Generators
Dust Generators SAG 410
General-purpose dry powder disperser that may be used for a variety of applications in aerosol and powder science, industrial processes and quality assurance tasks.
The technique for the dispersion of dry dust and powders comprises two steps, the continuous supply of material to the disperser and thedispersal of the material as an aerosol.
Atomizer Aerosol Generator ATM 220, 221
An aerosol generator for producing a test aerosol with defined characteristics especially for qualitative tests of filters for suspended matter (HEPA and ULPA filters), function test at laminar flow boxes and acceptance measurement in clean rooms.
It produces aerosols with known properties in accordance with the guideline VDI 3491. The generated polydisperse aerosols are mainly in the size range 0.2 to 0.5 µm with a very high permanence of the particle size distribution and a defined and high particle number concentration.
A further range of application for aerosol generators is calibration of measuring devices and visualization of currents. That enables measurements of local velocities and flow profiles of the tracer particles by means of optical methods.
The Atomizers can also be used to disperse PSL reference materials and so to produce monodisperse particles.
Dust Disperser SAG 420
A device for generating stable aerosols with options for precise aerosol mass flow and mass dosing.
The SAG 420 can provide dosing ranges from 6 g/hr up to 12 kg/hr. Filling during operation is possible.
Atomizer Aerosol Generator ATM 230
An instrument for generating tracer particles, testing HEPA and ULPA filters as well as clean room measurements and certification of laminar flow boxes.
It produces aerosols with known properties in accordance with the guideline VDI 3491. The generated polydisperse aerosols are mainly below 1 µm with an excellent constant particle size distribution and defined and high particle number concentration. Suitable liquids are e.g. DOP, Emery 3004, DEHS, salt soultions and it can be also used to disperse PSL reference materials.
TOPAS DGU 413
The Topas Dust Generator Unit (DGU 413) supports the safe generation of solid aerosols from bulk powder. The instrument is double-encapsulated, and works in conjuction with Topas' SAG 410 series of dispersion units (not included). This unique construction ensures user saftey by protecting the workplace from escaping aerosols.
Dust Disperser SAG 440
Particularly suited for dosing dust containing a certain proportion of fibres with a constant and reproducible dosing rate over a wide concentration range.
It has been especially developed to meet the requirements as defined by the ASHRAE 52.2 and DIN EN 779. Filling during operation is possible.
Topas ATM 240/L
The Topas ATM 240/L generates a high concentration aerosol from a suspension of polystyrene (PSL) particles, and is used for testing filters in sensitive areas such as those found in the semiconductor and aerospace industries. The ATM 240/L has a particle production rate of up to 1.5 x 1011/min, scalable by suspension concentration and nozzle pressure.
Atomizer Aerosol Generator ATM 210, 210/H
This special model facilitates generation of aerosols into pressurised vessels up to 10 bar.
It produces aerosols with known properties in accordance with the guideline VDI 3491. The generated polydisperse aerosols are mainly below 1 µm with an excellent stable particle size distribution.Suitable liquids are e.g. DOP, Emery 3004, DEHS, salt soultions and it can be also used to disperse PSL reference materials.
Atomizer Aerosol Generator ATM 226
An aerosol generator for producing a test aerosol with defined characteristics especially for qualitative tests of filters for suspended matter (HEPA and ULPA filters), function test at laminar flow boxes and acceptance measurement in clean rooms.
Compared to Atomizer Aerosol Generator ATM 220 or ATM 225 this instrument features a compact stainless steel housing (easy-to-clean), a direct connection with mains supply and a higher mass output.
It produces aerosols with known properties in accordance with the guideline VDI 3491. The generated polydisperse aerosols are mainly in the size range 0.2 to 0.5 µm with a very high permanence of the particle size distribution and a defined and high particle number concentration.
Topas Aerosol Generator ATM 228
The aerosol generator ATM 228 contains a brushless compressor, which means no external compressed air supply is required for operation. Flow rate is controlled by a differential nozzle pressure control, allowing for a reproducible and stable generator operation, even at very low air flow rates and particle production rates. The ATM 228 produces aerosol from pure liquids, solutions and suspensions.
Topas Aerosol Generator ATM 222
The aerosol generator ATM 222 combines technical features from both the ATM 220 and the ATM 228 to create an instrument used for the long-term stable generation of test and calibration aerosols from pure liquids, solutions and suspensions. The propellant gas flow is controlled by the pressure drop over the nozzle. Aerosol generation is reproducible and stable, even at low air flow and particle production rates.
Atomizer Aerosol Generator ATM 241
The generator is designed for generation of tracer particles, verifying measurements in very large clean rooms and for tests of HEPA and ULPA-filter media.
It produces aerosols with known properties in accordance with the guideline VDI 3491. The generated polydisperse aerosols are mainly below 1 µm with an excellent constant particle size distribution and defined and high particle number concentration.Suitable liquids are e.g. DOP, Emery 3004, DEHS, salt soultions and it can be also used to disperse PSL reference materials.
By varying of nozzle pressure, number of switched-on nozzles and the aerosol temperature (besides ATM 241) one can adjust both particle production rate and particle size distribution in a wide range.
VIPAS 300XL High-Output Large-Particle Aerosol Generator
The VIPAS 300XL produces a stable and high concentration of aerosol particles in the 0.1 to 10µm size range. It operates continuously on compressed air for up to three hours, requiring no mechanical pump. The VIPAS 300XL meets ASHRAE 52.2 and EN 779 requirements.
Sampling & Dilution
Topas Self-Adjusting Aerosol Diluter DIL 540/C
The aerosol diluter DIL 540/C self-adjusts to maintain the desired dilution factor despite changing operating conditions. This mobile unit is particularly useful for the verification of test aerosols used for testing cleamroom installations.
Dynamic Dilution System for Aerosols DDS 560
The Dynamic Dilution System is designed to definitely and reproducibly dilute aerosols according EN ISO 14644 part 3with possibility to adjust the dilution factor.
A simple front panel control knob allows adjustment of the dilution ratio from 5:1 to 370:1at flow ratio from 0.5 to 3.0 lpm.
DDU Diffusion Dryer DDU 570
The diffusion dryer consists of an Acrylic tube filled with silica gel with 2 caps on its ends and tube connectors. The aerosol streams through 3 screen pipes surrounded by dry silica gel which serves as drying agent.
Because the aerosol does not get into contact with the drying agent there is nearly no loss of particle material.
Topas VDS 562
The Topas VDS 562 Variable Dilution System was developed so that users can lower the concentrations of highly concentrated aersol samples using a single diluter. The instrument can be calibrated for vaious flow rates between 28.3 l/min-100 l/min, and dilution ranges up to 1:100,000 at the time of purchase. The VDS 562 features negligible pressure drop and no external dilution air requirement.
Electrostatic Aerosol Neutralizer EAN 581
The electrostatic aerosol neutralizer conditions the charge distribution on test dusts as well as other aerosols for example when evaluating separation techniques such as cyclones, filter s or impactors. Charge equilibrium can be controlled by mixing positive and negative ions in a precise manner.
Controllable generation of ions with separate adjustment of both positive and negative ion sources are provided. No radioactive source is required. It's easy to integrate into existing filter test systems and othe test apparatus.
Rectangular Sampling Probe SYS 529
The sample probes have a rectangular inlet which is gradually reduced to a circular tube connector.
The design of the probe is based on the ISO CD 14644, Part 3 which defines a maximum width to height ratio of 1:6.
The manufacturing process ensures that all internal surfaces are polished to avoid material deposits and their potential to create false test results.
Sample Switching Unit SYS 520
The Laser Aerosol Particle Size Spectrometer series LAP can optionally measure two different samples by using the Sample Switching Unit SYS 520. The instrument was especially developed for this application and realizes a quick changing between sample flow I, a flushing routine (HEPA-filter) and sample flow II.
Controlling the switching unit is only possible with the aerosol spectrometers series LAP with sample switching option. If you do not have such a LAP 320/U or LAP 321, Topas can install the needed control output in your instrument.
Dilution System for Aerosols DIL 550
The dilution system is designed to accurately dilute aerosols to produce a defined particle concentration and carry out certain measuring tasks.
The main application of the dilution system DIL 550 is in the verification of test aerosols for testing clean rooms. By using the dilution system DIL 554 upstream of a particle counter, e.g. LAP 322, a dilution factor of up to 100 can be achieved. Thereby particle concentrations of >106 Particles per cf (1 cf = 28.3 l) can be reduced to 104 cf–1. This will put the particle concentration well within the range of standard particle counters.
Dilution System for Aerosols DIL 554
The dilution system is designed to accurately dilute aerosols to produce a defined particle concentration and carry out certain measuring tasks.
The main application of the dilution system DIL 550 is in the verification of test aerosols for testing clean rooms. Compared to the DIL 550 the innovative features are an easy-to-clean compact stainless steel housing and a mobil use by battery-operation (optional also wall power supply).
By using the dilution system DIL 554 upstream of a particle counter, e.g. LAP 322, a dilution factor of up to 100 can be achieved. Thereby particle concentrations of >106 Particles per cf (1 cf = 28.3 l) can be reduced to 104 cf–1. This will put the particle concentration well within the range of standard particle counters.
Filter Test Rigs
Topas Test Rigs
Topas manufactures a variety of standard and custom test systems for the following:
- Media
- Oil mist separators
- Standard filters
Visit the Topas website for a complete line of filter testing systems, stands and complete filters. Associated standards in both German and English are also provided.