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Bio-Rad Laboratories Inc PVDF membranes. announces the launch of its Immun-Blot LF (low fluorescence) , protein blotting membranes that are optimized for fluorescent and multiplex fluorescent applications. The membranes offer high signal-to-background ratio, low autofluorescence, and superior protein retention to maximize blot detection sensitivity and enable downstream quantitation.

There are two primary types of protein blotting membranes used in Western blotting applications:  Nitrocellulose and PVDF (polyvinylidene fluoride). While both membrane types are suitable for colorimetric and chemiluminescent detection, their high autofluorescence and lower signal-to-background ratios are not suitable for fluorescent detection.

Immun-Blot LF PVDF membranes are a low fluorescent alternative specifically designed for fluorescent immunoblotting and detection in the visible light (Red/Green/Blue) spectrum. Immun-Blot LF PVDF membranes produce highly sensitive and quantitative results due to superior signal-to-background ratios, which are higher than low fluorescence membrane solutions (Bulletin 6116) and are three times higher than nitrocellulose and conventional PVDF.

• Low autofluorescence and high signal-to-background ratio — produces a stronger signal, more accurate protein quantitation, and higher quality images
• Superior protein retention — offers binding capacity of 300 µg/cm2 and improves the ability to capture more proteins, especially low-abundance proteins
• Precut membrane and filter paper sets — saves time and eliminates excessive membrane handling and potential contamination

Immun-Blot LF PVDF membranes are compatible with any imager possessing visible RGB excitation channels, including Bio-Rad’s new ChemiDoc MP imager, which allows researchers to visualize proteins at every stage of their blotting experiment when paired with Bio-Rad’s proprietary Stain-Free technology. The membranes are also compatible with a wide range of fluorescent labels such as DyLights, Q-Dots, and Alexa fluorophores as well as colorimetric and chemiluminescent detection methods.

DSS is a supplier of membrane filtration technology to the global dairy industry. Since the company was established in 2000, more than 500 membrane filtration systems for various applications have been supplied to most parts of the world. A fundamental part of our business is to provide easy access for new and existing customers to spares, service, and expert knowledge.
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Ordering membranes from DSS is easy. Customer inquiries receive a fast and efficient response from our dedicated sales team. The company’s 24/7 hotline team serves customers all over the world, around the clock offering expert advice on mem­brane types, applications, process optimisation and membrane cleaning.
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In fact, most membrane types are kept in stock and are often dis­patched the day they are ordered.
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DSS offers a very wide range of organic membranes from all leading manufacturers, all types of spares, and service engineers for installation.

(Air Filtration Update) – Energy efficiency — and the resulting savings — can be achieved in surprisingly easy ways. That’s something hospitals, manufacturers, schools, and other organizations that have switched from using ordinary light bulbs to compact florescent (CFL) bulbs know well. With just a small investment — the cost of the bulb itself — energy use is reduced and the bottom line improved. But what is less well known is that light bulbs are just the beginning. Even greater energy savings — again, with minimal upfront costs — can be achieved by switching to more sustainable, efficient low energy air filters.

If switching to CFL bulbs was a wise choice, then switching to a new generation of energy efficient air filters is a no-brainer. Consider, for example, that while the cost premium of a CFL bulb versus a traditional incandescent bulb is 8 times the price, the premium of a sustainable air filter — like the 5-Star Durafil 4V from Camfil Farr — is just 2 times the price of a less efficient filter.

Both a CFL bulb and an energy-efficient air filter more than recover their cost premium. A CFL bulb may cost 8 times more than a traditional light bulb but it lasts 10 times longer. For sustainable air filters, the equation is even more favorable, as a filter that costs twice as much as a less efficient product lasts three times longer.

Then there are the energy savings. According to the U.S. Environmental Protection Agency, the annual energy savings per CFL bulb is $4.50. Meanwhile, the savings per sustainable air filter is $ 135+ (thus it takes roughly 30bCFL bulbs to achieve the energy savings of a single 5 Star air filter). How long does it take to install 30 light bulbs versus 1 air filter?

Factor that $135 savings by the 300 air filters used by the average hospital, and switching to low-energy air filters can save $ 40,500 a year in energy costs, with no capital expenses. The same hospital would have to replace almost 10,000 conventional bulbs with CFL bulbs to achieve the same savings.

Keep in mind, too, that unlike light bulbs — which contain mercury — disposing of used air filters presents no health and safety concerns. And because sustainable filters from manufacturers like Camfil Farr last far longer than more conventionally designed products, there are fewer of them to dispose of, in any event — further reducing their impact on the environment.

Hospitals, manufacturers, and other organizations have seen significant — and easily obtainable — benefits by switching to compact florescent bulbs. Moving to low-energy air filters is the logical next step: a simple, low-cost strategy to boost savings even more.

All too often, the old adage rings true, even for air filters: You get what you pay for. When it comes to commercial air filters, however, sub par performance can be more than an inconvenience. It can mean air filled with dangerous particles — indoor pollution that can cause discomfort, disease, and even disrupt the business processes of high-tech companies in the computer, pharmaceutical, and biotechnology industries.

It can also mean higher costs over the long run. Low-cost air filters that degrade quickly require frequent maintenance and replacement. Those costs add up, ultimately turning the ‘bargain’ on its head. Higher-quality products, on the other hand, may cost more initially but perform better, for longer periods of time. In the end, they provide the greater return on investment — not to mention a healthier indoor environment where clean air isn’t a goal but a fact.

For a Dallas-based Fortune 500 company — a worldwide leader in the semiconductor and computer technology business — this long-term view of commercial air filters has paid off handsomely, resulting not just in clean air but significant savings.

For decades, the company had been buying filters as commodity items, favoring low-cost filters in a strategy that it thought brought it value. What it brought, however, was just the opposite. The low-cost air filters featured a traditional design, using coarse fiber media to keep dangerous particles out of the air. But coarse fiber media has one big disadvantage: It doesn’t stand up to time. Efficiency drops quickly, requiring frequent replacement. Costs, it turns out, are high after all, because so many of those ‘low-cost’ air filters are required over time.

Cutting-edge commercial air filter designs, like those pioneered by Camfil Farr, the global leader in innovative clean air solutions, take a different approach. They use advanced technologies like fine fiber media to provide optimal efficiency for maintained filter efficiency over time. They also last longer so while these air filters may cost more up front they need less frequent change-outs, resulting in lower overall costs. Indeed, total lifecycle cost (LCC) calculations predicted that the Dallas company would see savings of 37 percent over five years.

The proof, of course, is in real-world performance. So the company pitted its commodity air filters against Camfil Farr’s advanced design. Coarse fiber air filters were tested side by side with Camfil’s fine fiber media filters rated at the same efficiency. They were challenged by the same air, at the same airflow, over the same timeframe.

Testing confirmed the LCC calculations, demonstrating clearly the substantially decreased ownership costs — in this case, a savings of nearly 40 percent — that Camfil’s fine fiber air filters offer.

For the semiconductor giant, its next decision was easy: switching from its existing commercial air filters to Camfil Farr’s innovative — and cost saving — design. Indeed, three years after testing, the performance of the Camfil Farr filters still align with the LCC calculations.

These results weren’t an anomaly. Many of the biotechnology companies, hospitals, schools, and other organizations that have implemented Camfil Farr clean air solutions have also been able to cut their HVAC energy costs by up to 40 percent a year.

By looking beyond initial costs, and looking at long-term performance, the Fortune 500 company — like many other Camfil Farr customers — was able to put spend less money on air filtration, while getting cleaner air in the process. That’s not just a win for the bottom line, but for health and for comfort — and a true bargain that stands the test of time.

The Energy Awards is the only event that recognises achievement across the entire energy industry whether it’s managing its use and reducing it within a building; providing exceptional supply and procurement services; using innovative energy efficient and renewable technologies in existing or new build properties to reduce their carbon footprint; and promoting energy efficient products and services that have made an impact over the past year.

Camfil scooped two awards, ‘Energy Efficient Product of the Year’ – For their HVAC Low Energy Air Filter and ‘Excellence in Carbon Reduction’ – Small Company

Bill Wilkinson, Camfil Managing Director said:

“The Energy Awards are a major stamp of approval for us, this is proof that our low energy air filters help FM’s and Estates Professionals improve their sustainability whilst making substantial energy savings. We are also thrilled to get recognition for our own Carbon Reduction initiatives, we really do practice what we preach to our customers!”

The Energy Awards ceremony was held in London on 1stDecember 2011 and provided a unique coming together of the industry’s who’s who for an evening of recognition and celebration.

The new Membrane Solutions’ Filters feature Gore’s latest ePTFE (expanded polytetrafluoroethylene) membrane technology that provides unsurpassed combinations of retention and flow performance.  All non-PTFE components utilize high density polyethylene (HDPE) to ensure exceptionally low organic and metal ion extractables.  The HDPE family of cartridge filters will be available in three retention ratings – 0.1 µm, 30 nm and 20 nm.

The new HDPE family of cartridge filters can be used as drop-in replacements for existing filters to provide 150% up to 400% improvement in flow capability over the best filter technology currently available at the same retention rating. This dramatically increased performance can provide a drop-in retention upgrade while maintaining system flow capacity.  At the same retention, this performance can be used to increase process capacity, or decrease the number of filters needed. The filters are ideal for high-turnover recirculation filter systems or as the final filter in high-throughput chemical filling and packaging systems.

MS’s PTFE filtration media has been used for decades in the world’s best-performing filters for semiconductor, electronics, ultrapure water and high-purity chemical applications.

Donaldson Membranes teamed up with German filter bag manufacturer, Fasse Industrietextilien GmbH, to improve filter element life and reduce environmental emission levels at a biomass power plant in eastern Germany.

The Power Plant
The power plant is a pure electricity plant, originally built as a sugar factory, fuelled by brown coal, which has been reconfigured as a biomass incineration plant, with all existing equipment being updated, renewed or extended. The plant utilises biomass in the form of old growth products and recycled wood as fuel to generate electricity to supply the surrounding area.

Biomass used for heat and power generation accounts for nearly 5% of Germany’s primary energy source. In 2007 biomass accounted for 93% of the heat supplied from renewable energies. As with this plant, the wood used is exclusively for energy production through combustion, and comprises low-grade wood varieties from forests, fast-growing species plantations, remnants from the wood-processing industry and scrap wood.

The plant combines these different classes of wood, to ensure that the fuel that enters the incinerator has an even calorific content to ensure a continuous energy output.

Process Requirements
The biomass fuel, at a rate of 30 tonnes per hour, is incinerated on a continuously moving metal grate at 1000-1200oC, producing 450oC steam which powers a maximum of 3 generators producing electricity at an average rate of 14 MW/h.

The flue gas that is generated passes via a mechanical pre-separator to a fabric filter baghouse comprising seven compartments of filter bags.

The original filter bags installed were running ineffectively with a cloud of black smoke visible above the plant’s exhaust stack and the plant came under increasing pressure from the German government to implement an environmental control system and to reduce their particulate emission levels below the regulation 20m³/h.

The Project
Fasse Industrietextilien GmbH were drafted in to help combat a problem the plant was experiencing with the baghouse filter, the differential pressure was too high and the ventilation system was continuously working at maximum load.

Fasse Industrietextilien GmbH recommended the following as a solution: install low-cost PPS (Polyphenylsulphide) filter bags, with the possibility of purchasing a new set of bags if the process conditions deteriorated.  In addition they suggested installing one of the seven baghouse chambers with bespoke #6255 Tetratex Ultra High Efficiency Woven Fibreglass filter bags, to highlight the increased benefits if Tetratex ePTFE membrane filter media over conventional filtration products.

Due to technical issues in the process, the baghouse was not in use for a year, after which time the only sleeves still in tact in the filter chambers were the #6255 Tetratex Ultra High Efficiency bags; the alternative PPS bags had become tarnished and stressed.  A further technical defect with the cleaning cycle led to oil and water from the compressor coming into contact with the sleeves, whilst the Tetratex filter bags remained in a good condition, the PPS bags had to be replaced.

Donaldson Membranes teamed up with German filter bag manufacturer, Fasse Industrietextilien GmbH, to improve filter element life and reduce environmental emission levels at a biomass power plant in eastern Germany.

The Power Plant
The power plant is a pure electricity plant, originally built as a sugar factory, fuelled by brown coal, which has been reconfigured as a biomass incineration plant, with all existing equipment being updated, renewed or extended. The plant utilises biomass in the form of old growth products and recycled wood as fuel to generate electricity to supply the surrounding area.

Biomass used for heat and power generation accounts for nearly 5% of Germany’s primary energy source. In 2007 biomass accounted for 93% of the heat supplied from renewable energies. As with this plant, the wood used is exclusively for energy production through combustion, and comprises low-grade wood varieties from forests, fast-growing species plantations, remnants from the wood-processing industry and scrap wood.

The plant combines these different classes of wood, to ensure that the fuel that enters the incinerator has an even calorific content to ensure a continuous energy output.

Process Requirements
The biomass fuel, at a rate of 30 tonnes per hour, is incinerated on a continuously moving metal grate at 1000-1200oC, producing 450oC steam which powers a maximum of 3 generators producing electricity at an average rate of 14 MW/h.

The flue gas that is generated passes via a mechanical pre-separator to a fabric filter baghouse comprising seven compartments of filter bags.

The original filter bags installed were running ineffectively with a cloud of black smoke visible above the plant’s exhaust stack and the plant came under increasing pressure from the German government to implement an environmental control system and to reduce their particulate emission levels below the regulation 20m³/h.

The Project
Fasse Industrietextilien GmbH were drafted in to help combat a problem the plant was experiencing with the baghouse filter, the differential pressure was too high and the ventilation system was continuously working at maximum load.

Fasse Industrietextilien GmbH recommended the following as a solution: install low-cost PPS (Polyphenylsulphide) filter bags, with the possibility of purchasing a new set of bags if the process conditions deteriorated.  In addition they suggested installing one of the seven baghouse chambers with bespoke #6255 Tetratex Ultra High Efficiency Woven Fibreglass filter bags, to highlight the increased benefits if Tetratex ePTFE membrane filter media over conventional filtration products.

Due to technical issues in the process, the baghouse was not in use for a year, after which time the only sleeves still in tact in the filter chambers were the #6255 Tetratex Ultra High Efficiency bags; the alternative PPS bags had become tarnished and stressed.  A further technical defect with the cleaning cycle led to oil and water from the compressor coming into contact with the sleeves, whilst the Tetratex filter bags remained in a good condition, the PPS bags had to be replaced.