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Increase Your Lab’s Effi ciency with 0 FEBRUARY 2020 - VOLUME 45 ISSUE 1


Fully Automatic Dispensing of Powders with CHRONECT Quantos


CHRONECT Quantos of METTLER TOLEDO is a fully automated platform enabling dispensing of up to 32 different powders into plate formats.


Dramatically improved efficiency, throughput, safety and less waste thanks to automated powder dispensing.


Join our free Live Webinar on Automated Powder Dosing with CHRONECT Quantos on 12th February or 29th April, 2020 to learn more: www.mt.com/quantos-live-webinar


Automated Powder Dispensing In most laboratories, weighing is the heart of many processes and needs to be executed accurately and effi ciently. However, manual weighing and dosing of very small amounts of powdery samples is extremely time consuming, since the samples may be diffi cult to handle, inhomogeneous, toxic, electrostatically charged, etc. and the tolerances demanded are tight. Find out how automated powder dispensing can


• Increase your lab’s effi ciency • Improve user safety, and • Lets you save time and money


www.mt.com/chronect-quantos OFC - Mettler.indd 1 31/01/2020 10:29 Mass Spectrometry & Spectroscopy


Recent Advances in HRAM Mass Spectrometry Christian Klein


Laboratory Products Head Office - International Labmate Ltd


Oak Court, Sandridge Park, St AIbans, Hertfordshire AL3 6PH, United Kingdom. Tel: +44 (0)1727 855574 • Fax: +44 (0)1727 841694 Amend your subscription: subscribe@intlabmate.com Other enquiries: info@intlabmate.com • sales@intlabmate.com ISSN 0143-5140


Publishers of: International Labmate, Labmate UK & Ireland, Lab Asia, Chromatography Today, International Environmental Technology, Asian Environmental Technology, Pollution Solutions, Petro Industry News and Measurement Analysis China


Infrared Cameras: Advanced Temperature Measurement for Today’s Breakthrough Medical Research Chris Bainter


Staying Safe When Weighing Hazardous or Sensitive Materials


Mettler-Toledo Microscopy & Imaging


Tackling Dementia with Cutting-Edge Brain Imaging Technology Stuart Gillespie


Publisher Michael H. Pattison


Director of Publications Marcus Pattison


michael@intlabmate.com marcus@intlabmate.com


International Sales & Marketing Manager Chris Jarvis


North American Area Manager Carol Hardy


Director, Asia Pacific Marie Izzard


European Sales Manager John Hobbs-Morris


Online Manager Rob Parker


Guide Manager Sam Jackson


Guide Assistant Lisa Penn


Administrator Helen Wills


chris@intlabmate.com carol@intlabmate.com marie@intlabmate.com.au john@intlabmate.com rob@intlabmate.com sam@intlabmate.com lisapenn@intlabmate.com helenw@intlabmate.com


Editor Gwyneth Astles


Contributing Editor Heather Hobbs


gwyneth@intlabmate.com heather@intlabmate.com


Contributing Editor - Separation Science Trevor Hopkins


Production Manager Robert Battell


Production Team Caroline Belt Jill Mitchell


Heather Vincent


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Market Research trevor@intlabmate.com robert@intlabmate.com Spotlights


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maureen@labmate.net Marstonbury Ltd


Sample Preparation & Processing Pumps, Valves & Liquid Handling Food & Beverage Analysis


Pittcon Show Preview Gwyneth Astles


ArabLab Show Preview Gwyneth Astles


Published by International Labmate Ltd - Printed by Warners Midlands Plc


International Labmate is distributed to scientists, technologists, laboratory technicians and environmentalists throughout the Europe and Middle East, free of charge. The publication has the support of leading suppliers of equipment in the region and is displayed at the major exhibitions and conferences in these markets to attract additional readership.


International Labmate is a member of the


following trade association:


International Labmate, ISSN 0143-5140, is published 7 times a year - in February, March, April, May, July, September and November by International Labmate Ltd, Oak Court, Sandridge Park, St Albans, Hertfordshire, AL3 6PH, United Kingdom. The US annual subscription price is $100 USD.


Airfreight and mailing in the USA by agent named Air Business Ltd, c/o Worldnet Shipping Inc.,156-15, 146th Avenue, 2nd Floor, Jamaica, NY 11434, USA. Periodicals postage paid at Jamaica NY 11431. US Postmaster: Send address changes to International Labmate, Worldnet Shipping Inc., 156-15, 146th Avenue, 2nd Floor, Jamaica, NY 11434, USA Subscription records are maintained at International Labmate Ltd, Oak Court, Sandridge Park, St Albans, Hertfordshire, AL3 6PH, United Kingdom.


Air Business Ltd is acting as our mailing agent. News


Research & Events News Heather Hobbs


North American Office: Carol Hardy - International Labmate Ltd 333 Colony Blvd. #194 The Villages, FL 32162, United States Tel: +(1) 623-869-0184 Fax: +(1) 623-321-9200. E-mail: carol@intlabmate.com


Asian Office: Marie Izzard - International Labmate Ltd PO Box 374, Mona Vale, NSW, 1660, Australia Tel: +61 (0) 2 9918 0317 Fax: +61 (0) 2 9918 0316 E-mail: marie@intlabmate.com.au


International Labmate is published six times per annum in tabloid format. In addition a most comprehensive “Guide to Laboratory and Environmental Equipment” printed in A4 format. It incorporates companies, products and dealers, mailed in May/June.


Although every effort is made to ensure the accuracy of material published, International Labmate and its offices cannot accept responsibility for claims made by contributors, manufacturers or advertisers.


© All rights reserved by International Labmate Ltd. Reproduction in part or whole without written permission is strictly prohibited. Please look after the environment by recycling this magazine


Microscopy News Heather Hobbs


Japan: Mr Koichi Ogawa - OTO Research Corporation Takeuchi Building 1 -34-12 Takatanobaba, Shinjuku-Ku, Tokyo 169, Japan Tel: (03) 3208 7821 Fax: (03) 3200 2889


Heather Hobbs News & Views


Business Opportunities Heather Hobbs


2


22 48 70


Features 78 66 44 12


In this Issue Articles


Chromatography


The Purifi cation of Crown Ether Samples by a Quaternary Solvent Flash Chromatography System Haifeng Wu, Wenjun Qiu and Bo Xu


6


36


58


18


74


80


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