Laser Channel - "Laser Obscuration Time" (LOT)
The  Laser Channel is a straight-forward technique for determining particle size distribution (0.1 - 3,600 microns), without any assumptions or sample pre-knowledge.

A focused laser beam rotates in a constant & steady frequency of 12000 rpm and randomly interacts with particles within the sample medium.
Each randomly scanned particle obscurates the laser beam to a dedicated photo diode, which measures the time of obscuration.

The time of obscuration directly relates to the particle's Diameter, by a simple calculation principle of multiplying the known beam rotation Velocity in the directly measured Time of obscuration, (D=V*t).

This unique analytical technique is recently called "Laser Obscuration Time" (LOT) or former "Time Of Transition" (TOT).
It demonstrates the major advantage of this direct particle size measurement over other laser used techniques, with high resolution obtained by the individual particle measurement approach.

The benefit of measuring time (unlike other particles features) is its "sterile nature" as an analytical variable, meaning it is not affected by any physical or chemical property of the particle or its medium; in fact, it provides reliable analysis results for a wide variety of materials, where other common techniques can not overcome physical or chemical limitations.

State-Of-The-Art software analyses the obscuration time as multiple pulses algorithm complex, providing within seconds clear and accurate results of the sampled particles size distribution.

The  real time sample visualization capabilities importantly allow its users to easily eliminate unwanted analytical results due to irrelevant and/or unwanted fractions in the sample: "Seeing Is Believing"!!!