Whitehouse Scientific
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Whitehouse Scientific has been producing high precision glass microspheres for research and calibration purposes for the last 21 years. It’s quality analytical techniques were endorsed by the Community Bureau of Reference (BCR) in 1995 when it was recognised as the leading European Certification Laboratory for particle size after an anonymous quality audit of nearly 40 laboratories.
Using specially developed 100 stage sample sub-dividers, Whitehouse Scientific has also emerged as the world’s leading producer of single shot calibration standards and has prepared over 1 million bottles ranging in weight from 500g down to 10mg. The standards can be either polydisperse with 7 grades from 0.1 to 2000mm or monodisperse with sizes from 20 - 2000mm.
Whitehouse Scientific has also produced a unique range of NIST traceable sieve standards for calibrating individual sieves from 20 - 3350mm. Up to 2 million apertures per minute can be measured to an accuracy of 1 micron, without having to send the sieves away.
Finally, an ultra-high precision range of glass microspheres have been developed to calibrate speciality filters and complex wire meshes that cannot be calibrated by any other means. BP Amoco has specified this new technology for sand screen filters used in oil production where the most stringent analysis is required to prevent multimillion-dollar breakdowns.
Whether calibrating a particle sizing instrument or an aperture in the range 1 and 10,000 microns, Whitehouse Scientific has a standard for every application.
Contact Information:
Whitehouse Scientific
Whitchurch Road
Waverton
Chester CH3 7PB
UK
Tel: +44 (0) 1244 33 26 26
Fax: +44 (0) 1244 33 50 98
Website: www.WhitehouseScientific.com
Opaque Microspheres
- Whitehouse Scientific launches new Opaque Microspheres »
Whitehouse Scientific, one of the most widely recognised and respected manufacturers of particle size calibration standards using glass microspheres, has added basalt microspheres to its range.
Sieve Calibration Software
- New Whitehouse software program speeds sieve calibration »
The on-site calibration of test sieves has been further simplified by the introduction of new software from Whitehouse Scientific.
Pore Size Measurement
- Pore size measurement using new NIST traceable microsphere standards »
Dr. Graham R. Rideal
1. Introduction - The apertures of plain weave meshes can be measured by microscopy because they are open to transmitted light, figure 1. However, 3-dimensional duel layered meshed cannot be measured by microscopy because they are opaque, so a different method of pore size measurement is required, figure 2.
Particle Size Standards
- New Polydisperse Particle Size Reference Standards - Preparation and Certification »
Dr. Graham R. Rideal
Co-authors: Dr J Mitchell, Prof. J.A. Dodds, Dr M-N Pons, Prof. K Leschonski, Dr P.J. Lloyd and Mr H.G. Mercus Introduction - The European Community Bureau of Reference (BCR) brought out a range of crushed quartz reference standards in 1980 for particle sizing instrument calibration1. - A new high speed precision method of calibrating test sieves »
Dr. Graham R. Rideal
Background - Sieving is one of the oldest methods of particle separation and is documented in ancient Egypt in the making of papyrus, the earliest form of paper. - NIST Traceable Filter Testing »
Dr. Graham R. Rideal
Whitehouse Scientific's novel approach to filter calibration uses glass microspheres in single shot bottles to provide a measure of pore size or filter cut point that is traceable to NIST and NPL standards.
Exhibitions and Events
- Whitehouse Scientific will launch single shot calibration standards for small test sieves at ACHEMA 2006 »
Following the success of its precision glass microspheres for calibrating 200 mm diameter sieves, Whitehouse Scientific is to introduce a new set of single dose standards for 100 mm and 40 mm test sieves. The standards will be launched at ACHEMA 2006, Stand No: 6.2 H21 (15-19 May 2006; Munich).
Particle Size Standards
- Particle Size Analysis Standards »
Celebrating it’s silver anniversary, Whitehouse Scientific has been producing and certifying glass microspheres for 25 years, establishing itself as the premiere laboratory for glass reference standards.
