evolving DIN 51455 standard prescribe many operational and
equipment prerequisites, which allow to get comparable results
from different labs and operators.
For example, it contains
precise instructions for setting evaluation diameter, setting
brightness and thresholds, requirements for the evaluation
JOMESA MAT3 system based on a material microscope fully conforms
with these requirements.
There are some additional
Particle size count beginning from 2µm
a color camera and a true 0.4µm/pxl resolution.
height focusing (Software Autofocus)
JOMESA was the first
company introducing this focusing method in filter membrane
analysis. Thereby ensuring that every field of view is correctly
focused. This method is superior to a focus map with
stretch filter holder
This unique device ensures a
flattened filtermembrane by stretching the filter like the skin
of a drum. Although the system is capable, because of the
software autofocus, of scanning even wrinkled membranes, the
scanning time is greatly reduced when scanning a flattened
light control (USB interface) with histogram based brightness
This JOMESA unique feature ensures that the
brightness setting is controlled by the brightness of the
membrane background (this is the maximum of a brightness
This method is superior to a camera based
(shutter) brightness setting, where the brightness of the total
image (background + particles) must be used. .
standard according DIN 51455
This standard for the first
time demands an equipment check, based on a particle standard.
The particle standard comes with a certificate, ensuring the
traceability to national standards.