Product category:
Materials Testing
News Release from: Quantitech | Subject: Grimm FCE
Edited by the Manufacturingtalk Editorial
Team on 02 September 2005
Particle counting system detects down to
1nm
A novel particle counting system that detects particles down to 1nm or even less has been introduced by Grimm Aerosol Technik, Ainring, Germany.
A novel particle counting system that detects particles down to 1nm or even less has been introduced by Grimm Aerosol Technik, Ainring, Germany Based on the principle of the Faraday Cup Electrometer, the Grimm FCE works by detecting the charge on the particles rather than relying on "growing" the particles to a detectable size as occurs with conventional nuclear condensation counters
This article was originally published on Manufacturingtalk on 6 Jun 2002 at 8.00am (UK)
Related stories
Monitoring sub-micron aerosols and particulates
Motor manufacturers or indeed anyone interested in studying or monitoring sub-micron aerosols and particulates will appreciate the benefits of sequential mobility particle sizer and counter.
This extends the size detection range to below 1nm and has the additional benefits of a much faster response (50ms) and a working concentration range of 4-5 orders of magnitude.
It also eliminates the need for the condensation liquid used in traditional counters, usually butanol.
Very sensitive electrometers of this type are normally prone to noise and drift, but the Grimm FCE employs lock-in amplifier technology to overcome this problem.
Used with the Grimm "Vienna" electrostatic classifier, the Grimm FCE enables the study of sub-nano particles like protein molecules, viruses and even metal ions.
Important applications in the environmental field include the study of nucleation processes occurring in atmospheric photochemical reactions, and the "drive-by" measurement of automotive exhaust emissions.
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