The A-22 utilises the reverse Fourier structure invented by Fritsch, which has largely become the market standard.
The compact appliance requires few individual parts and is particularly easy to operate.

Advanced laser particle analyser with new dry dispersion module

Oct 03 2024

Fritsch's A-22 laser particle analyser offers simplicity, precision, and versatility in particle measurement. Its minimalist design makes it user-friendly, easy to clean, and low-maintenance, delivering precise results in both the nano and micro ranges in under a minute. Recently, Fritsch introduced a new dry dispersion module to expand the A-22's modular capabilities.

With a broad measuring range from 0.01 to 3,800 μm, the A-22 achieves maximum accuracy, even with the smallest particles. The device uses a single laser without the need for an additional light source for backscattering. Thanks to advanced electronics and high-resolution converters, the A-22 records signals from all detector elements simultaneously, capturing the full scattered light distribution in real-time. This speed, combined with the unique angled arrangement of the measuring cell to the laser beam, enables the instrument to cover a larger scattering angle range than similar devices. With only one image needed for the entire measuring range, the total process, including cleaning, takes less than a minute for most samples.

Fritsch's reverse Fourier set-up, a market standard, is used in the A-22. It requires no optical elements between the measuring cell and the detector, minimizing components and moving parts. This compact design contributes to the device's durability and low wear, making it virtually maintenance-free. Cleaning is straightforward due to its simple construction, with removable parts that do not require tools.

The A-22 software includes predefined standard programs for common measuring tasks, ensuring ease of operation. Users can also modify or create their own programs, with automated settings for dispersion, measuring frequency, and intervals, ensuring reproducibility in measurement processes.

The new dry dispersion module allows for measurements of materials that react with liquids and accommodates larger sample volumes. This system uses compressed air to break down agglomerates and measure particle size distribution directly in the laser beam.

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