Laboratory Syringe Filters for Sterile and Non-Sterile Filtration
Greyhound Chromatography Q-Range Syringe Filters
Greyhound's Q-Fil Syringe Filters set the new quality standard for today's laboratory syringe filters. Manufactured from the highest quality medical grade, high density polypropylene. Q-Fil Syringe Filters provide excellent chemical compatibility with acids, alcohols, bases, ethers, glycols, ketones and oils, with maximum operating temperatures.
Every colour-coded syringe filter is printed with details of the membrane material and its pore size on the face of the filter and every box is labelled with the batch number making them ideal for traceability, GLPs and validation purposes. With over 21 different mebrane types available, both sterile and non-sterile, including the most popular; PTFE filter, PVDF filter and Nylon filter.
Greyhound Q-Fil Syringe Filters Catalogue
Why filter your samples for HPLC?
• To protect the HPLC column, the column inlet frits and capillary columns against blockage (plugging) caused by particulate matter in the sample
• To protect injection valves from damage caused by scratching and wear of the valves internal components, caused by harmful particulate matter in the unfiltered sample, thereby reducing instrument downtime.
About our Quality Control procedures
• Every batch of filters is tested by an independent laboratory to ISO 17025 quality procedures
• Every individual Q-Fil Certified Syringe Filter is visually inspected to ensure it meets our manufacturing and quality control specifications
• Samples of all our syringe filters and their respective raw technical data are stored for a period of 5 years from the date of manufacture for future reference
Each batch of filters is tested prior to release for:
- External Dimensions
- Bubble Point
- Burst Pressure
- Filter Integrity
- Water Flow Rate
- UV Extractables and compliance with all technical procedures
Why use Greyhound Q-Fil Certified Syringe Filters?
• Q-Fil Certified Syringe Filters are manufactured in compliance with ISO 9001:2000 quality procedures
• Every box is supplied with a Certificate of Analysis and Conformance to guarantee its batch to batch quality and performance
• The unique encapsulating process developed for these filters, forces the sample to pass only through the membrane, thus avoiding the possibility of leaks or contamination
• Available in the most popular sizes, porosities and membrane types
• Excellent resistance to all routinely used HPLC solvents
• Filter housings are manufactured from high density medical grade polypropylene
• Extremely low level of extractables for highly sensitive work
• Luer connections fully comply with ISO 594-1
• Filters are available with standard and ‘SlimTip’ sized outlets
Selecting the right Q-Fil Certified Syringe Filter
• Choose the size of filter based on the volume of sample to be filtered
• Choose the filters porosity based on the size of the potential particulates in the sample. It is important to be aware that the finer the porosity of the membrane the greater the pressure will be required to pass the sample through the filter. A sample containing large quantities of particulates is best filtered using a filter with a built-in glass fibre pre-filter
• Choose the type of membrane based on the solvent being filtered.
Filter Sizes
All our filters have female Luer Lock inlets and are available in four diameters -
Designed for the largest sample volumes or solvent filtration Filtration area 5.39cm2 Maximum filtration volume <200ml Maximum operating pressure 87psi (6.0 bar) at 20°C Sample volume <200ml Holdup volume <200µl |
Designed for large sample volumes or solvent filtration Wide cross sectional area 3.55cm2 Maximum filtration volume >10ml Maximum operating pressure 550 Kpa |
13mm Diameter
Suitable for most applications Filtration area of 0.95cm2 Maximum filtration volume 1 to 10ml Maximum operating pressure 750 Kpa Now available with ‘SlimTip’ (ST) outlet |
4mm Diameter
Suitable for most applications Ideal for small samples <1ml Pore sizes of 0.20µm and 0.45µm SlimTip Filters (ST) 13mm diameter syringe filters are now available with the new ‘SlimTip’ outlet for direct filling of microvials. |
Pore Sizes
Q-Fil Certified Syringe Filters are available in 0.22µm and 0.45µm pore sizes. The 0.22µm filters remove the smallest particulates whilst the 0.45µm filters are designed to remove particulates which would be detrimental to most analytical columns.
Pre-filters (page 3) have a glass microfibre membrane which is chemically inert and resists most solvents. Q-Fil glass microfibre pre-filters are recommended for removing large particulates from the sample and are ideal for dissolution tests.
Glass microfibre membranes are also available mounted before the microporous filter membrane in the polypropylene housing. The glass pre-filter removes the larger particulates and prevents premature clogging of the filter.
• These filters have the same high quality filter membranes and polypropylene housings as our other Q-Fil Syringe Filters, but include a Glass Microfiber (GMF) membrane used as a pre-filter • The glass microfiber pre-filter is mounted before the microporous filter membrane, eliminating the need for a pre-filtration step, minimising sample loss and prolonging the life of the filter membrane • Flow rates are increased and the filtrate volume is significantly greater when compared to filters without pre-filters • Regenerated Cellulose membrane filters with the GMF membrane incorporated as a pre-filter, are particularly useful for tissue culture media filtration, as well as for general biological sample filtration • These filters are ideal for general laboratory filtration of samples which contain excessive amounts of particulates • The glass microfiber pre-filter removes the large particulates and prevents premature clogging of the filter membrane |
Membrane Filters
Reliable and ready-to-use membranes in different pore sizes for filterable products. Greyhound Chromatography is a leading provider of a wide range of filter membranes, providing fast, flexible and reliable analysis.
Grided Sterile Membrane filters routinely used for water microbiology, quality control, particulate and colony count. The imprinted grid on the mebrane facilitates the counting of particular load and colonies, especially for higher bacterial count and for micro colonies.
CONTACT US
Tel: +44 (0) 151 649 4000
Email: marketing@greyhoundchrom.com
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About the Author
Susan Massie, Sales & Marketing Director, Greyhound Chromatography and Allied Chemicals Email: sue@greyhoundchrom.com
Susan Massie is the Sales & Marketing Director for Greyhound Chromatography and Allied Chemicals, affectionately known as 'Greyhound' in our scientific community. Greyhound was founded by Susan's husband Paul Massie more than 40 years ago, Susan hasn't been in the business for all of that time but has been involved with Greyhound for over 17 years. Greyhound continues to grow, expanding into new markets and taking on the challenges of our ever changing environment. It's heartwarming to witness the world waking up to the fact that we are damaging our planet on a daily basis. Every action we take has a direct effect on our planet and the world we leave behind for future generations. Susan is passionate about climate change and is happy to work in an industry that can have a direct effect on reducing the impact of our actions on the environment. All of the team at Greyhound take our responsibilities very seriously, the products that we supply are used by the world's leading scientists and chemists as they endeavour to monitor and repair the environment. All is not lost, if we all take responsibility for our actions, from reducing our waste and reusing or recycling our material collateral we can make a difference. The internet is full of useful advice and guidance, Susan is proud to contribute to that wealth of knowledge whenever she can.
Greyhound prides itself on personal service which provides prompt, efficient, cost-effective, safe delivery of all products. Greyhound provides technical advice and distribution of Certified Reference Standards and Materials, Laboratory Consumables, Solvents and Reagents across all scientific disciplines. Greyhound Chromatography offers over 1 Million products from its UK warehouse. The team at Greyhound are proud to support the work of the world's leading scientists and chemists as they challenge the abuse of our planet and try to make a difference to the world we leave behind for our ancestors.
You can view Susan's Linked In Profile here https://www.linkedin.com/in/susan-massie-79ab4121/