Unit 1, Anglian Business Park, Orchard Road, Royston, Hertfordshire, SG8 5TW, UK T: +44 (0)1763 242491 F: +44 (0)1763 246125 E: sales@dolomite-microfluidics.com W: www.dolomite-microfluidics.com Dolomite Microfluidics North America Office Blacktrace Inc, 29 Albion Place Charlestown, MA 02129, USA C: 617 803 6655 T: 617 848 1121 F: 617 500 0136 E: salesus@dolomite-microfluidics.com Membrane Chip Interface and Accessories product datasheet page Description 2 Main benefits 3 Specifications 3 Application 1: Liquid Liquid Contacting 4 Application 2: Liquid Liquid Separation 4 Application 3: Dead End Filtration 5 Application 4: Cross Flow Filtration 5 Application 5: Electrochemistry 6 Required Parts 7 Accessories 8 Facilitating equipment 8 Custom Chips and Membranes 8 The Dolomite Centre Limited Page 1 of 9
Part name Part number Membrane Chip Interface 3200345 Membrane Chip 3200344 PTFE Membrane, Hydrophobic (Pack of 10) 3200343 PTFE Membrane, Hydrophilic (Pack of 10) 3200347 Description The Membrane Chip Interface (Part No. 3200345) has been designed for in-line liquidliquid separation, liquid-liquid contacting, dead-end and cross flow filtration, and electrochemistry. Set up is fast using standard 1/16 O.D. polymer tube, requiring no tools or fittings. The innovative interface allows good visibility of the chip and keeps the internal volume of the system low with the tubes sealing directly to the chip. The standard setup for operation includes a Membrane Chip Interface (Part No. 3200345), two Membrane Chips (Part No. 3200344), a PTFE Membrane, Hydrophobic (Part No. 3200343) or a PTFE Membrane, Hydrophilic (Part No. 3200347).This setup can be customised in various ways. Left: Membrane Chip Interface (Part No. 3200345) Above: Membrane Chip (Part No. 3200344) and PTFE Membrane, Hydrophobic (Part No. 3200343) MAR-000096 V.A.12 Page 2 of 9
Main benefits Allows quick set-up of microfluidic experiments with membranes Low dead volume Fast set up times Wide temperature and pressure range Excellent chemical compatibility Wide range of membranes possible Optical access to membrane during experiments Specifications Specification Number of inputs 2 Number of outputs 2 Internal channel cross section Channel length Value 900µm x 150µm (width x depth) 212mm Membrane contact surface area 190mm 2 Total internal volume 56µl Flow rate raneg based on liquid - liquid separation experiment Surface roughness of channels (Ra) Chip size Chip thickness Operating pressure Up to 1.5ml/min* 5nm 24mm x 24mm 4mm 0-10bar Operating temperature 0-80 C Chip material Chip fabrication process Chip sealing Glass with PTFE (or other) membrane Wet etching Mechanical clamping, no adhesives * 1.5ml/min is based on carrying out a liquid-liquid separation between ethyl acetate and water, using a PTFE hydrophobic membrane. MAR-000096 V.A.12 Page 3 of 9
Application 1: Liquid Liquid Contacting In this configuration separate organic and aqueous solvent streams can be brought into contact across a membrane. This allows diffusion of solutes between the two streams. The surface area of contact on the chip is 192mm 2. See diagram below: Organic solvent stream Aqueous solvent stream Application 2: Liquid Liquid Separation The liquid - liquid separation of immiscible organic and aqueous liquid streams can be achieved with the set-up shown below. The porous hydrophobic PTFE membrane repels the aqueous phase, but allows the organic stream to pass through. This results in separation with the organic stream passing out through the top chip and the aqueous stream passing out through the base chip as shown below. Hydrophilic porous membranes are also available, which results in the aqueous solvent passing out of the top and the organic solvent passing out through the base. Note: to achieve the maximum flow rate the cross-membrane pressure needs to be controlled. One way to achieve this is to have a height difference between the output streams. Organic solvent stream Flow stream with immiscible organic and aqueous solvent phases Aqueous solvent stream Membrane chip with porous PTFE membrane MAR-000096 V.A.12 Page 4 of 9
Application 3: Dead End Filtration In this configuration an aqueous or organic solution, can be filtered trapping particulates behind the membrane. Filtered stream Reagents stream For example, precipitate can be collected during a precipitation reaction if the membrane chip interface is situated downstream of the reaction process. We would recommend the hydrophobic membrane for filtering organic solvents and the hydrophilic membrane for filtering aqueous solvents. Application 4: Cross Flow Filtration In this configuration the solution is passed alongside the membrane so that filtered and non-filtered streams are created. This set-up flushes away the retained particles facilitating experiments which require a higher flow rate. Filtered stream Reagents stream MAR-000096 V.A.12 Page 5 of 9
Application 5: Electrochemistry (Custom Setup) In-flow electrochemistry is enabled by applying a voltage across the flow stream. This type of reaction requires custom metal/carbon chips and a gasket so that the stream will pass between the electrodes. +V Stream -V One or both chips may be wet etched or have machined channels. The electrical connection (not supplied as standard) is applied with a spring contact through the viewing window. A set up involving multiple streams and a membrane is possible. Please contact us about your requirements. MAR-000096 V.A.12 Page 6 of 9
Required Parts In order to begin experimentation 2 x Membrane Chips (Part No. 3200344), the PTFE Membrane, Hydrophobic (Part No. 3200343) or PTFE Membrane, Hydrophilic (Part No. 3200347), and the Membrane Chip Interface (Part No. 3200345) are required. The Membrane Chip Interface (Part No. 3200345) includes the top and bottom of the interface as well as FEP Tubing, 1/16" x 0.25mm, 10 metres (Part No. 3200063) and Plug FEP (pack of 10) (Part No. 3000056) and four FFKM seals. The Membrane Chip (Part No. 3200344) is a single 4mm thick glass layer with etched channels on one surface. Two of these chips are required to carry out microfluidic experiments (one to go above the membrane and one to go below the membrane). Membrane Chip Interface (Part No. 3200345) Chip Header FFKM Seal (Part No. 3000262) (supplied with 3200345) Membrane Chip (Part No. 3200344) PTFE Membrane, Hydrophobic (Part No. 3200343) or PTFE Membrane, Hydrophilic (Part No. 3200347) Membrane Chip (Part No. 3200344) Chip Header FFKM Seal (Part No. 3000262) (supplied with 3200345) Left: FEP Tubing, 1/16" x 0.25mm, 10 metres (Part No. 3200063) Right: Plug FEP (pack of 10) (Part No. 3000056) MAR-000096 V.A.12 Page 7 of 9
Accessories and spares Description Part No. PTFE Membrane, Hydrophobic (Pack of 10) 3200343 PTFE Membrane, Hydrophilic (Pack of 10) 3200347 Chip Header FFKM Seal (Pack of 10) 3000262 FEP Tubing, 1/16" x 0.25mm, 10 metres 3200063 Plug FEP (Pack of 10) 3000056 Facilitating equipment Description Part No. Mitos Duo XS-Pump 3200057 Hotplate 230 3000223 Sample Injection Valve 3200037 T- Connector ETFE 3000397 Custom Chips and Membranes Custom chips can be designed for the Membrane Chip Interface. It is also possible to use different membranes and gaskets between the two glass layers. The clamping force generated between the two glass layers is around 60kg. MAR-000096 V.A.12 Page 8 of 9
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