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Automated small sample preparation
News and Views Table 1: Examples of membrane operations In f o o d processing
Process or application
"l~pical product
Membrane process
Cold sterilization Clarification
Beer, wine, milk Wine, beer, fruit juices Proteins (whey), fruit juices Beer, wine Proteins (egg, whey, blood), carbohydrates Lactic acid, citric acid Aromas, flavours Soft water, potable water, desalted cheese
MF MF, UF
Dairy, beverage Beverage
UF, RO (often combined) PV UF egg, sugar
Potato, dairy
UF, ED
Biotechnology
PV, RO RO, ED, NF
Beverage Beverage, dairy
Drying, thickening Dealcoholization Fractionation Product recovery Product improvement Desalination
Industry
Beverage Dairy, meat,
ED, electrodialysis; MF, microfiltration; NF, nanofiltration; PV, pervaporation; RO, reverse osmosis; UF, ultrafiltration
Further Information from: F. Petrus Cuperus and Henry H. NlJhuis, Agrotechnical Research Institute (ATO-DLO), PO Box 17, NL-6700 AA Wagenlngen, The Netherlands.
A u t o m a t e d small sample preparation Designed to a u t o m a t e sample preparation u s i n g W h a t m a n Syringeless Filters, the new Processor 20 b a t c h Filtration System from W h a t m a n International wlU be welcomed in a n y laboratory that m a n a g e s n u m e r o u s small samples. The processor h a s been developed for use with the three c u r r e n t types of syringeless filter: Autovial, UniPrep a n d ClinIPrep. These are all disposable devices for one-step sample preparation, each available with a choice of filter media. The processor operates by automatically compressing u p to 18 Autovials, or u p to 24 UniPrep or CliniPrep devices, held in sample stands. Compression rate is adjustable to suit the particulate load a n d viscosity of each b a t c h of samples, a n d efficiency a s s u r e s that all samples in the b a t c h receive exactly the s a m e c o m p r e s s i o n treatment. It also reduces the c h a n c e of m e m b r a n e damage t h r o u g h applying too m u c h pressure, and reduces u s e r - c o n t a c t with a n y h a z a r d o u s substances. Further Informatlon from: W h a t m a n International Ltd, W h a t m a n House, St Leonard's Road, 2 0 / 2 0 Maldstone, Kent ME16 OLS, UK. Tel: 0622 676670. Fax: 0622 677011.
M e m b r a n e T e c h n o l o g y No. 3 7
Membranes directory published The S e p t e m b e r / O c t o b e r 1993 issue ofFlltratlon & Separation magazine contains a n international directory of companies that m a n u f a c t u r e m e m b r a n e s a n d related filtration equipment. E a c h of the 200 entries in the directory is a c c o m p a n i e d b y a brief s u m m a r y of the c o m p a n y ' s expertise, a n d full contact details. Further Informatlon from: Filtration & Separation, Elsevler A d v a n c e d Technology, Matifleld House, 256 Banbury Road, Oxford OX2 7OH, UK. Tel: 0865 512242. Fax: 0865 310981.
Call for papers Papers are now requested for the sixth a n n u m meeting of the North American Membrane Society to be held from 21-25 May 1994 in Breckenridge, Colorado, USA. The focus of the meeting will be the challenges a n d opportunities for m e m b r a n e science a n d technology in the 2 I s t century. This theme is reflected in two plenary sessions a d d r e s s i n g r e s e a r c h a n d education needs from both a n academic a n d a n industrial perspective. The technical p r o g r a m m e is organized into three m a i n themes: materials science a n d engineering, processes a n d applications. Workshops will also be
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Process or application
"l~pical product
Membrane process
Cold sterilization Clarification
Beer, wine, milk Wine, beer, fruit juices Proteins (whey), fruit juices Beer, wine Proteins (egg, whey, blood), carbohydrates Lactic acid, citric acid Aromas, flavours Soft water, potable water, desalted cheese
MF MF, UF
Dairy, beverage Beverage
UF, RO (often combined) PV UF egg, sugar
Potato, dairy
UF, ED
Biotechnology
PV, RO RO, ED, NF
Beverage Beverage, dairy
Drying, thickening Dealcoholization Fractionation Product recovery Product improvement Desalination
Industry
Beverage Dairy, meat,
ED, electrodialysis; MF, microfiltration; NF, nanofiltration; PV, pervaporation; RO, reverse osmosis; UF, ultrafiltration
Further Information from: F. Petrus Cuperus and Henry H. NlJhuis, Agrotechnical Research Institute (ATO-DLO), PO Box 17, NL-6700 AA Wagenlngen, The Netherlands.
A u t o m a t e d small sample preparation Designed to a u t o m a t e sample preparation u s i n g W h a t m a n Syringeless Filters, the new Processor 20 b a t c h Filtration System from W h a t m a n International wlU be welcomed in a n y laboratory that m a n a g e s n u m e r o u s small samples. The processor h a s been developed for use with the three c u r r e n t types of syringeless filter: Autovial, UniPrep a n d ClinIPrep. These are all disposable devices for one-step sample preparation, each available with a choice of filter media. The processor operates by automatically compressing u p to 18 Autovials, or u p to 24 UniPrep or CliniPrep devices, held in sample stands. Compression rate is adjustable to suit the particulate load a n d viscosity of each b a t c h of samples, a n d efficiency a s s u r e s that all samples in the b a t c h receive exactly the s a m e c o m p r e s s i o n treatment. It also reduces the c h a n c e of m e m b r a n e damage t h r o u g h applying too m u c h pressure, and reduces u s e r - c o n t a c t with a n y h a z a r d o u s substances. Further Informatlon from: W h a t m a n International Ltd, W h a t m a n House, St Leonard's Road, 2 0 / 2 0 Maldstone, Kent ME16 OLS, UK. Tel: 0622 676670. Fax: 0622 677011.
M e m b r a n e T e c h n o l o g y No. 3 7
Membranes directory published The S e p t e m b e r / O c t o b e r 1993 issue ofFlltratlon & Separation magazine contains a n international directory of companies that m a n u f a c t u r e m e m b r a n e s a n d related filtration equipment. E a c h of the 200 entries in the directory is a c c o m p a n i e d b y a brief s u m m a r y of the c o m p a n y ' s expertise, a n d full contact details. Further Informatlon from: Filtration & Separation, Elsevler A d v a n c e d Technology, Matifleld House, 256 Banbury Road, Oxford OX2 7OH, UK. Tel: 0865 512242. Fax: 0865 310981.
Call for papers Papers are now requested for the sixth a n n u m meeting of the North American Membrane Society to be held from 21-25 May 1994 in Breckenridge, Colorado, USA. The focus of the meeting will be the challenges a n d opportunities for m e m b r a n e science a n d technology in the 2 I s t century. This theme is reflected in two plenary sessions a d d r e s s i n g r e s e a r c h a n d education needs from both a n academic a n d a n industrial perspective. The technical p r o g r a m m e is organized into three m a i n themes: materials science a n d engineering, processes a n d applications. Workshops will also be
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