- Email: [email protected]
NASA uses HTI's FO technology in space
NEWS
Editorial Office: Elsevier Ltd The Boulevard, Langford Lane Kidlington, Oxford OX5 1GB, UK Fax: +44 (0)1865 843973 Web: www.membrane-technology.com Publisher: Greg Valero E-mail: [email protected] Editor: Simon Atkinson Tel/Fax: +44 (0)1904 655944 Email: [email protected] Production Support Manager: Lin Lucas E-mail: [email protected] Editorial advisory board: Dr P Ball (Pall Europe), Dr D Bessarabov (HySA Infrastructure: NWU and CSIR), Prof. M Cheryan (University of Illinois at Urbana-Champaign), Prof. A G Fane (University of New South Wales), Dr A C M Franken (Membrane Application Centre Twente), Prof. E Gobina (Robert Gordon University), Dr A Merry (Aquious–PCI Membranes), Prof. M Nyström (Lappeenranta University of Technology), Dr Anil Pabby, Bhabha Atomic Research Centre, India Dr G K Pearce (Membrane Consultancy Associates), Prof. P H Pfromm (Kansas State University), Dr R W Philpott (Acumen Bioscience Ltd), Prof. R J Wakeman (Loughborough University of Technology), Prof. A Yaroshchuk (Ukrainian Membrane Society)
Subscription Information An annual subscription to Membrane Technology includes 12 issues and online access for up to 5 users. Prices: 1215 for all European countries & Iran US$1362 for all countries except Europe and Japan ¥161 385 for Japan (Prices valid until 31 December 2011) To subscribe send payment to the address above. Tel: +44 (0)1865 843687/Fax: +44 (0)1865 834971 Email: [email protected], or via www.membrane-technology.com. Subscriptions run for 12 months, from the date payment is received. Permissions may be sought directly from Elsevier Global Rights Department, PO Box 800, Oxford OX5 1DX, UK; phone: +44 1865 843830, fax: +44 1865 853333, email: [email protected]. You may also contact Global Rights directly through Elsevier’s home page (www.elsevier.com), selecting first ‘Support & contact’, then ‘Copyright & permission’. In the USA, users may clear permissions and make payments through the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA; phone: +1 978 750 8400, fax: +1 978 750 4744, and in the UK through the Copyright Licensing Agency Rapid Clearance Service (CLARCS), 90 Tottenham Court Road, London W1P 0LP, UK; phone: +44 (0)20 7631 5555; fax: +44 (0)20 7631 5500. Other countries may have a local reprographic rights agency for payments. Derivative Works Subscribers may reproduce tables of contents or prepare lists of articles including abstracts for internal circulation within their institutions. Permission of the Publisher is required for resale or distribution outside the institution. Permission of the Publisher is required for all other derivative works, including compilations and translations. Electronic Storage or Usage Permission of the Publisher is required to store or use electronically any material contained in this journal, including any article or part of an article. Except as outlined above, no part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the Publisher. Address permissions requests to: Elsevier Science Global Rights Department, at the mail, fax and email addresses noted above. Notice No responsibility is assumed by the Publisher for any injury and/or damage to persons or property as a matter of products liability, negligence or otherwise, or from any use or operation of any methods, products, instructions or ideas contained in the material herein. Because of rapid advances in the medical sciences, in particular, independent verification of diagnoses and drug dosages should be made.Although all advertising material is expected to conform to ethical (medical) standards, inclusion in this publication does not constitute a guarantee or endorsement of the quality or value of such product or of the claims made of it by its manufacturer.
02095 Digitally Produced by Mayfield Press (Oxford) Limited
2
Membrane Technology
GE’s LEAPmbr boosts productivity and reduces costs
G
E Power & Water has introduced its next-generation membrane bioreactor (MBR) wastewater treatment technology. Called LEAPmbr, GE claims that it addresses pressing water-quality and operational cost issues faced by owners of municipal and industrial, and residential water and wastewater treatment facilities worldwide. The result of a four-year development effort, the system offers the lowest lifecycle costs available for any MBR technology, while also being cost-competitive with conventional treatment methods, says the firm. These cost-savings, along with operational simplicity and a compact footprint, derive from innovations to the GE ZeeWeed 500 MBR product line, based on reinforced hollow-fibre ultrafiltration (UF) technology. The cost and efficiency savings of the LEAPmbr system, compared with existing GE MBR technologies, include a:minimum 30% reduction in energy costs; • 15% improvement in productivity (greater water-treatment capacity); • 50% reduction in membrane aeration equipment and controls – leading to a simpler design with lower construction, installation and maintenance costs; and • a 20% reduction in the physical footprint, which further reduces construction and installation costs and lowers ongoing consumption of cleaning chemicals. ‘MBR technology is one of the fastest-growing water-treatment technologies in use today, and GE has just made it an even better and more economic choice for greenfield plants, expansions and retrofits alike,’ said Jeff Connelly, Vice President, Engineered Systems – Water & Process Technologies, GE Power & Water. ‘In developing this major new product, we knew energy costs and reduced operating budgets would be key customer concerns because we face the same challenges ourselves. Moreover, because MBR technology is increasingly displacing conventional wastewater treatment methods, operational simplicity is key for those who are new to MBR systems, and for customers who are space-constrained a compact footprint is a make-or-break proposition. The LEAPmbr system addresses all of those issues.’ One of the key growth markets for MBR technology overall is the global municipal wastewater treatment sector. Until now, this
area has waited for the cost of new MBR technologies to become more competitive with existing applications. GE says that the LEAPmbr system addresses the concerns customers have about using MBR systems, while helping them to comply with stringent waterquality requirements. MBRs replace the solids–separation function of secondary clarifiers and sand filters used in conventional activated sludge systems. GE’s MBR technology consists of a suspendedgrowth biological reactor integrated with its ZeeWeed UF membranes. The ZeeWeed membranes are immersed in a tank, in direct contact with the water to be treated. A vacuum, applied to a header connected to the membranes, draws water through the ZeeWeed membranes, which filter out solids, along with bacteria and viruses. The filtered water, or permeate, then can be further treated, reused or discharged as needed. Contact: GE Water & Process Technologies, 4636 Somerton Road, Trevose, PA 19053-6783, USA. Tel: +1 215 355 3300, www.gewater.com
NASA uses HTI’s FO technology in space
H
ydration Technology Innovations Llc (HTI) of Scottsdale, Arizona, USA, has developed a forward osmosis (FO) hydration system for the US National Aeronautics and Space Administration’s (NASA) astronauts aboard the International Space Station (ISS), and for future extended space missions. The firm’s OsMem FO membrane technology can recycle “used” water, such as wastewater, and even urine, to provide a fortified drink that provides hydration and nutrients to astronauts with limited resources and storage in space. Scientists from NASA’s Kennedy Space Center in Florida tested a space-adapted version of HTI’s FO filter bag aboard Space Shuttle Atlantis during the STS-135 mission that launched this summer. ‘HTI has been very helpful in manufacturing a forward osmosis bag that we were able to certify for space flight and testing on board the Space Shuttle,’ said Spencer Woodward, Technical Integration Manager, NASA. ‘We are excited and optimistic about the test results that will hopefully give us the opportunity to carry out further tests and eventually use the technology on board the International Space Station and other future space vehicles.’
August 2011
NEWS HTI used the same proprietary membrane technology for these NASA products that it uses in its suite of emergency hydration products sold in retail outlets, but used a design and configuration customised to work in the absence of gravity. The company’s products, such as the HydroPack, LifePack and X-Pack, have also been used by the military and in humanitarian relief efforts in addition to being sold by retailers for personal use. Walt Schultz, Chief Executive Officer, HTI, commented: ‘We look forward to all the possible space-flight applications using HTI’s OsMem membrane.’ These tests could show the potential longterm use of a FO membrane in a space suit for upcoming space travel and as an emergency back-up source of water on board the ISS – providing hydration and nutrition during emergency return-to-Earth scenarios and as an aid during future long-term space exploration. Contact: Hydration Technology Innovations Llc, 9311 E. Via De Ventura, Scottsdale, AZ 85258, USA. Tel: +1 888 420 7222, www.HTIwater.com
ProSep’s sea-water treatment system aids oil and gas production
C
anada’s ProSep Inc, which designs, develops, manufactures and commercialises technologies to separate oil, water and gas generated by oil and gas production, has launched its customised sea-water treatment and water injection system, further completing its portfolio of process technologies. ProSep claims it is now one of the few companies that can provide the oil and gas industry with treatment equipment at every stage of upstream processing. ‘Our sea-water treatment and water injection subject-matter experts now offer our clients in-house expertise in conventional systems, which involve the use of media filters, as well as in the latest technology that employs ultrafiltration membranes,’ said Jacques Drouin, President and Chief Executive Officer, ProSep. ‘In the context of increasingly challenging production environments, this is a promising addition to ProSep’s extensive range of technologies, as water injection is a key process used to stimulate oil recovery. We estimate this mar-
August 2011
ket’s annual value to represent approximately $500 million.’ Water injection is used mainly for enhanced oil recovery (EOR), enabling the yield in wells that are nearing the end of their primary production life to be increased. Prior to being injected, sea water is treated by removing contaminants and oxygen. The firm says that its sea-water treatment and water injection equipment requires low maintenance while providing high removal efficiency. In addition, its compact size enables it to be used in offshore applications. Contact: ProSep Inc, 2015 Peel Street, Suite 630, Montreal, Quebec H3A 1T8, Canada. Tel: +1 514 522 5550, www.prosepinc.com
Residential development employs KMS’ MBR technology
K
och Membrane Systems Inc (KMS), a developer and manufacturer of membranes and membrane filtration systems, has announced that a residential development in Massachusetts, USA, is using its Puron Plus packaged membrane bioreactor (MBR) wastewater treatment system. The company says that it is the first time this system has been installed in North America. ‘Environmental concerns combined with increasingly stringent wastewater discharge requirements are escalating the importance of wastewater treatment,’ said Peter Bouchard, Director of Marketing and Communications, KMS. ‘Commercial and residential development is contributing to the need for prudent water management and creative technologies to treat wastewater from municipal and industrial effluents.’ The Puron Plus MBR system will serve an apartment complex, and is designed to meet stringent surface discharge limits for biochemical oxygen demand, total suspended solids and total nitrogen. The packaged system consists of two membrane trains, each containing one Puron membrane module, and ancillary equipment and controls. It is designed for an average flow rate of 90 850 litres (24 000 gallons) per day, with a peak flow of 121 130 litres (32 000 gallons) per day. The Puron Plus systems enable MBR technology to be supplied in the form of a skidmounted unit that is capable of pre-screening and biological treatment through to the
In Brief HO Innovation promotes Clairet Canadian water treatment technology company HO Innovation Inc has promoted Guillaume Clairet to the newly created position of vice president, strategic business development. He will be responsible for promoting HO Innovation’s growth worldwide. He will also identify targeted global geographies and develop strategies (joint venture, partnerships and acquisitions) that will enable the firm to establish and sustain long-term, profitable growth in selected geographies. Involved throughout the company’s fast growth, Clairet has held various positions – giving him a good understanding of its corporate structure and strategy. Dow posts sales of $16.0 billion Dow Chemical Co achieved sales of $16.0 billion in the second quarter of 2011 – the second highest quarter in the company’s history. Sales increased by 18%, driven by price gains of 17%, compared with the equivalent period a year earlier. Sales, excluding the impact of divestments, increased by 28%, with double-digit gains made in all operating segments and all geographic areas. The firm’s Specialty Materials segment reported a solid year-over-year sales increase, with double-digit gains across all geographic areas. Dow Water and Process Solutions reported a quarterly sales records, driven by double-digit volume growth in all geographic areas except North America. Volume gains were reported in ion-exchange resins, reverse osmosis membranes and the business’ ultrafiltration platform. Seprotech awarded equipment and support contracts Canada’s Seprotech Systems Inc has been awarded a contract worth C$435 000 to provide wastewater treatment equipment to a multinational mining company at a facility located in British Columbia. The firm, which provides preengineered systems, including reverse osmosis water purification and membrane-based waterrecycling units, says the Canadian Department of National Defence has also selected it to maintain two classes of water purification systems, including repair and overhaul services, and engineering and field service support. EMD Millipore launches app for the iPad EMD Millipore, the life science division of Germany’s Merck KGaA, has launched an interactive histone modification application, or ‘‘app’’, for the iPad. This free app enables researchers to explore a collection of core histone modifications and access information on their biological significance and epigenetic implications, with links to published references. Core histones are proteins that package DNA into structural units known as nucleosomes and play a central role in gene expression.
Membrane Technology
3
Editorial Office: Elsevier Ltd The Boulevard, Langford Lane Kidlington, Oxford OX5 1GB, UK Fax: +44 (0)1865 843973 Web: www.membrane-technology.com Publisher: Greg Valero E-mail: [email protected] Editor: Simon Atkinson Tel/Fax: +44 (0)1904 655944 Email: [email protected] Production Support Manager: Lin Lucas E-mail: [email protected] Editorial advisory board: Dr P Ball (Pall Europe), Dr D Bessarabov (HySA Infrastructure: NWU and CSIR), Prof. M Cheryan (University of Illinois at Urbana-Champaign), Prof. A G Fane (University of New South Wales), Dr A C M Franken (Membrane Application Centre Twente), Prof. E Gobina (Robert Gordon University), Dr A Merry (Aquious–PCI Membranes), Prof. M Nyström (Lappeenranta University of Technology), Dr Anil Pabby, Bhabha Atomic Research Centre, India Dr G K Pearce (Membrane Consultancy Associates), Prof. P H Pfromm (Kansas State University), Dr R W Philpott (Acumen Bioscience Ltd), Prof. R J Wakeman (Loughborough University of Technology), Prof. A Yaroshchuk (Ukrainian Membrane Society)
Subscription Information An annual subscription to Membrane Technology includes 12 issues and online access for up to 5 users. Prices: 1215 for all European countries & Iran US$1362 for all countries except Europe and Japan ¥161 385 for Japan (Prices valid until 31 December 2011) To subscribe send payment to the address above. Tel: +44 (0)1865 843687/Fax: +44 (0)1865 834971 Email: [email protected], or via www.membrane-technology.com. Subscriptions run for 12 months, from the date payment is received. Permissions may be sought directly from Elsevier Global Rights Department, PO Box 800, Oxford OX5 1DX, UK; phone: +44 1865 843830, fax: +44 1865 853333, email: [email protected]. You may also contact Global Rights directly through Elsevier’s home page (www.elsevier.com), selecting first ‘Support & contact’, then ‘Copyright & permission’. In the USA, users may clear permissions and make payments through the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA; phone: +1 978 750 8400, fax: +1 978 750 4744, and in the UK through the Copyright Licensing Agency Rapid Clearance Service (CLARCS), 90 Tottenham Court Road, London W1P 0LP, UK; phone: +44 (0)20 7631 5555; fax: +44 (0)20 7631 5500. Other countries may have a local reprographic rights agency for payments. Derivative Works Subscribers may reproduce tables of contents or prepare lists of articles including abstracts for internal circulation within their institutions. Permission of the Publisher is required for resale or distribution outside the institution. Permission of the Publisher is required for all other derivative works, including compilations and translations. Electronic Storage or Usage Permission of the Publisher is required to store or use electronically any material contained in this journal, including any article or part of an article. Except as outlined above, no part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the Publisher. Address permissions requests to: Elsevier Science Global Rights Department, at the mail, fax and email addresses noted above. Notice No responsibility is assumed by the Publisher for any injury and/or damage to persons or property as a matter of products liability, negligence or otherwise, or from any use or operation of any methods, products, instructions or ideas contained in the material herein. Because of rapid advances in the medical sciences, in particular, independent verification of diagnoses and drug dosages should be made.Although all advertising material is expected to conform to ethical (medical) standards, inclusion in this publication does not constitute a guarantee or endorsement of the quality or value of such product or of the claims made of it by its manufacturer.
02095 Digitally Produced by Mayfield Press (Oxford) Limited
2
Membrane Technology
GE’s LEAPmbr boosts productivity and reduces costs
G
E Power & Water has introduced its next-generation membrane bioreactor (MBR) wastewater treatment technology. Called LEAPmbr, GE claims that it addresses pressing water-quality and operational cost issues faced by owners of municipal and industrial, and residential water and wastewater treatment facilities worldwide. The result of a four-year development effort, the system offers the lowest lifecycle costs available for any MBR technology, while also being cost-competitive with conventional treatment methods, says the firm. These cost-savings, along with operational simplicity and a compact footprint, derive from innovations to the GE ZeeWeed 500 MBR product line, based on reinforced hollow-fibre ultrafiltration (UF) technology. The cost and efficiency savings of the LEAPmbr system, compared with existing GE MBR technologies, include a:minimum 30% reduction in energy costs; • 15% improvement in productivity (greater water-treatment capacity); • 50% reduction in membrane aeration equipment and controls – leading to a simpler design with lower construction, installation and maintenance costs; and • a 20% reduction in the physical footprint, which further reduces construction and installation costs and lowers ongoing consumption of cleaning chemicals. ‘MBR technology is one of the fastest-growing water-treatment technologies in use today, and GE has just made it an even better and more economic choice for greenfield plants, expansions and retrofits alike,’ said Jeff Connelly, Vice President, Engineered Systems – Water & Process Technologies, GE Power & Water. ‘In developing this major new product, we knew energy costs and reduced operating budgets would be key customer concerns because we face the same challenges ourselves. Moreover, because MBR technology is increasingly displacing conventional wastewater treatment methods, operational simplicity is key for those who are new to MBR systems, and for customers who are space-constrained a compact footprint is a make-or-break proposition. The LEAPmbr system addresses all of those issues.’ One of the key growth markets for MBR technology overall is the global municipal wastewater treatment sector. Until now, this
area has waited for the cost of new MBR technologies to become more competitive with existing applications. GE says that the LEAPmbr system addresses the concerns customers have about using MBR systems, while helping them to comply with stringent waterquality requirements. MBRs replace the solids–separation function of secondary clarifiers and sand filters used in conventional activated sludge systems. GE’s MBR technology consists of a suspendedgrowth biological reactor integrated with its ZeeWeed UF membranes. The ZeeWeed membranes are immersed in a tank, in direct contact with the water to be treated. A vacuum, applied to a header connected to the membranes, draws water through the ZeeWeed membranes, which filter out solids, along with bacteria and viruses. The filtered water, or permeate, then can be further treated, reused or discharged as needed. Contact: GE Water & Process Technologies, 4636 Somerton Road, Trevose, PA 19053-6783, USA. Tel: +1 215 355 3300, www.gewater.com
NASA uses HTI’s FO technology in space
H
ydration Technology Innovations Llc (HTI) of Scottsdale, Arizona, USA, has developed a forward osmosis (FO) hydration system for the US National Aeronautics and Space Administration’s (NASA) astronauts aboard the International Space Station (ISS), and for future extended space missions. The firm’s OsMem FO membrane technology can recycle “used” water, such as wastewater, and even urine, to provide a fortified drink that provides hydration and nutrients to astronauts with limited resources and storage in space. Scientists from NASA’s Kennedy Space Center in Florida tested a space-adapted version of HTI’s FO filter bag aboard Space Shuttle Atlantis during the STS-135 mission that launched this summer. ‘HTI has been very helpful in manufacturing a forward osmosis bag that we were able to certify for space flight and testing on board the Space Shuttle,’ said Spencer Woodward, Technical Integration Manager, NASA. ‘We are excited and optimistic about the test results that will hopefully give us the opportunity to carry out further tests and eventually use the technology on board the International Space Station and other future space vehicles.’
August 2011
NEWS HTI used the same proprietary membrane technology for these NASA products that it uses in its suite of emergency hydration products sold in retail outlets, but used a design and configuration customised to work in the absence of gravity. The company’s products, such as the HydroPack, LifePack and X-Pack, have also been used by the military and in humanitarian relief efforts in addition to being sold by retailers for personal use. Walt Schultz, Chief Executive Officer, HTI, commented: ‘We look forward to all the possible space-flight applications using HTI’s OsMem membrane.’ These tests could show the potential longterm use of a FO membrane in a space suit for upcoming space travel and as an emergency back-up source of water on board the ISS – providing hydration and nutrition during emergency return-to-Earth scenarios and as an aid during future long-term space exploration. Contact: Hydration Technology Innovations Llc, 9311 E. Via De Ventura, Scottsdale, AZ 85258, USA. Tel: +1 888 420 7222, www.HTIwater.com
ProSep’s sea-water treatment system aids oil and gas production
C
anada’s ProSep Inc, which designs, develops, manufactures and commercialises technologies to separate oil, water and gas generated by oil and gas production, has launched its customised sea-water treatment and water injection system, further completing its portfolio of process technologies. ProSep claims it is now one of the few companies that can provide the oil and gas industry with treatment equipment at every stage of upstream processing. ‘Our sea-water treatment and water injection subject-matter experts now offer our clients in-house expertise in conventional systems, which involve the use of media filters, as well as in the latest technology that employs ultrafiltration membranes,’ said Jacques Drouin, President and Chief Executive Officer, ProSep. ‘In the context of increasingly challenging production environments, this is a promising addition to ProSep’s extensive range of technologies, as water injection is a key process used to stimulate oil recovery. We estimate this mar-
August 2011
ket’s annual value to represent approximately $500 million.’ Water injection is used mainly for enhanced oil recovery (EOR), enabling the yield in wells that are nearing the end of their primary production life to be increased. Prior to being injected, sea water is treated by removing contaminants and oxygen. The firm says that its sea-water treatment and water injection equipment requires low maintenance while providing high removal efficiency. In addition, its compact size enables it to be used in offshore applications. Contact: ProSep Inc, 2015 Peel Street, Suite 630, Montreal, Quebec H3A 1T8, Canada. Tel: +1 514 522 5550, www.prosepinc.com
Residential development employs KMS’ MBR technology
K
och Membrane Systems Inc (KMS), a developer and manufacturer of membranes and membrane filtration systems, has announced that a residential development in Massachusetts, USA, is using its Puron Plus packaged membrane bioreactor (MBR) wastewater treatment system. The company says that it is the first time this system has been installed in North America. ‘Environmental concerns combined with increasingly stringent wastewater discharge requirements are escalating the importance of wastewater treatment,’ said Peter Bouchard, Director of Marketing and Communications, KMS. ‘Commercial and residential development is contributing to the need for prudent water management and creative technologies to treat wastewater from municipal and industrial effluents.’ The Puron Plus MBR system will serve an apartment complex, and is designed to meet stringent surface discharge limits for biochemical oxygen demand, total suspended solids and total nitrogen. The packaged system consists of two membrane trains, each containing one Puron membrane module, and ancillary equipment and controls. It is designed for an average flow rate of 90 850 litres (24 000 gallons) per day, with a peak flow of 121 130 litres (32 000 gallons) per day. The Puron Plus systems enable MBR technology to be supplied in the form of a skidmounted unit that is capable of pre-screening and biological treatment through to the
In Brief HO Innovation promotes Clairet Canadian water treatment technology company HO Innovation Inc has promoted Guillaume Clairet to the newly created position of vice president, strategic business development. He will be responsible for promoting HO Innovation’s growth worldwide. He will also identify targeted global geographies and develop strategies (joint venture, partnerships and acquisitions) that will enable the firm to establish and sustain long-term, profitable growth in selected geographies. Involved throughout the company’s fast growth, Clairet has held various positions – giving him a good understanding of its corporate structure and strategy. Dow posts sales of $16.0 billion Dow Chemical Co achieved sales of $16.0 billion in the second quarter of 2011 – the second highest quarter in the company’s history. Sales increased by 18%, driven by price gains of 17%, compared with the equivalent period a year earlier. Sales, excluding the impact of divestments, increased by 28%, with double-digit gains made in all operating segments and all geographic areas. The firm’s Specialty Materials segment reported a solid year-over-year sales increase, with double-digit gains across all geographic areas. Dow Water and Process Solutions reported a quarterly sales records, driven by double-digit volume growth in all geographic areas except North America. Volume gains were reported in ion-exchange resins, reverse osmosis membranes and the business’ ultrafiltration platform. Seprotech awarded equipment and support contracts Canada’s Seprotech Systems Inc has been awarded a contract worth C$435 000 to provide wastewater treatment equipment to a multinational mining company at a facility located in British Columbia. The firm, which provides preengineered systems, including reverse osmosis water purification and membrane-based waterrecycling units, says the Canadian Department of National Defence has also selected it to maintain two classes of water purification systems, including repair and overhaul services, and engineering and field service support. EMD Millipore launches app for the iPad EMD Millipore, the life science division of Germany’s Merck KGaA, has launched an interactive histone modification application, or ‘‘app’’, for the iPad. This free app enables researchers to explore a collection of core histone modifications and access information on their biological significance and epigenetic implications, with links to published references. Core histones are proteins that package DNA into structural units known as nucleosomes and play a central role in gene expression.
Membrane Technology
3