Product category:
Calibration and Laboratory Instruments
News Release from: Brookhaven Instruments (UK) | Subject: NIST-traceable particle size standards
Edited by the Manufacturingtalk Editorial
Team on 18 May 2006
NIST-traceable particle size standards
New literature available from Brookhaven Instruments UK gives revised details of three of the most popular ranges of NIST-traceable particle size standards from Duke Scientific.
New literature available from Brookhaven Instruments UK gives revised details of three of the most popular ranges of NIST-traceable particle size standards from Duke Scientific The 3000 Series Nanosphere range of highly uniform polymer microspheres comprises 27 different standards with nominal mean diameters from 20nm up to 900nm whilst the 4000 Series Microsphere Size Standards continue the progression with 40 more standards with mean diameters from 1micron up to 1000microns
This article was originally published on Manufacturingtalk on 12 Nov 2002 at 8.00am (UK)
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Certified particle size standards offered
Brookhaven offers a comprehensive range of Certified Particle Size Standards which are widely used for calibration in electron and optical microscopy.
Range of Certifified Particle Size Standards
Brookhaven offers a range of Certified Particle Size Standards which are widely used for calibration in electron and optical microscopy, particle size aanalysis, contamination monitoring etc.
All are supplied with certificate of analysis stating mean size, uncertainty and distribution width (coefficient of variation about the mean diameter).
The density of these polymer particles is 1.05 g/cm3.
Glass microspheres with narrow size distribution and NIST traceable mean diameters are available in the 9000 Series Certified Particle Size Standards range.
Borosilicate glass microspheres are available in six different mean sizes ranging from 2microns to 20microns.
Another 24 sizes, from 30microns to 2000 microns mean diameter, are now available made from soda lime glass.
Particle density is 2.5g/cm3 for the borosilicate standards and 2.4 - 2.5g/cm3 in the case of soda lime glass standards.
A third range of certified standards with very narrow size distribution is the 8000 Series of silica microspheres.
These come in four mean sizes from 0.5NIST-traceable particle size standards to 1.6NIST-traceable particle size standards and have a density of 1.8 - 2.2g/cm3.
All the particles are spherical which minimises shape effects in instrument response and makes them valuable as a source of third party traceability of calibration procedures to national and international standards for the widest possible range of analytical instruments.
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