Product category:
Calibration and Laboratory Instruments
News Release from: Brookhaven Instruments (UK) | Subject: Certified Particle Size Standards
Edited by the Manufacturingtalk Editorial
Team on 19 December 2002
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.
Certified Particle Size Standards Brookhaven offers a comprehensive range of Certified Particle Size Standards which are widely used for calibration in electron and optical microscopy, particle size analysis, contamination monitoring and similar applications The standards consist of highly uniform polymer, glass or silica microspheres with mean diameters in the range 20 nm to 2000 æm
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.
Coloured Certified Particle Size Standards
Brookhaven has launched a new range of intensely coloured microspheres from Duke Scientific Corporation which offer very high contrast and visibility relative to most background materials.
Each standard is supplied with a certificate of analysis stating the mean diameter, traceable to NIST standards.
Their spherical nature ensures that shape factors do not influence the response of the wide variety of equipment with which they are used and also makes them easily identifiable among other types of particles in direct imaging methods.
The range now includes polymer microspheres of 9 æm and 40 æm which have specific application as reference standards for certain laser diffraction particle sizers.
A line of dry polymer microspheres with mean sizes from 5 æm to 100 æm are ideal when aqueous suspensions are not appropriate for the application.
For calibrating air and liquid particle counters with respect not only to particle size but also concentration, the EZY-CAL series of microspheres with narrowly distributed diameters from 2 to 70 microns is available at fixed and certified concentration of 2000 counts per millilitre.
For parenteral drug manufacturers requiring interim verification of particle counter performance according to USP23, a 15 micron size standard, packaged at the required concentration, offers an economical alternative to the prescribed USP standard material.
Named PHARM-TROL, this standard is supplied in packs of six or twenty bottles containing 25mL of the aqueous suspension.
All products are manufactured by Duke Scientific Corporation, USA, for whom Brookhaven is the authorised distributor in the UK and Ireland.
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