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Enhanced Oil Recovery chips with physical rock network structure, with optional hydrophobic coating
Pack of 3 chips containing a channel structure representing an actual physical piece of rock. These microfluidic chips can be used in Enhanced Oil Recovery research, reservoir engineering, as well as for environmental research. The chips support testing under high pressure conditions. They are for instance used to verify simulation models of rock-pore structures in the EOR field.
The optional coating is applied in provided on a best effort base, it might be possible that some area's where geometries are not interconnected will stay uncoated.
Here is a paper using this chip for enhanced oil recovery and foam research:
Jong, Stephen Yin-Chyuan, and Quoc Phuc Nguyen. "Effect of microemulsion on foam stability." Applied Nanoscience (2018): 1-9.
|Product reference for order||Please use the following product references for an order:|
- Uncoated (hydrophilic) chips: FC_EOR.PR.20.2_PACK
- Coated (hydrophobic) chips: 01954
|Number of chips per pack||3|
|Distance between channel and top surface||1100 µm|
|Distance between channel and bottom surface||680 µm|
|Total chip thickness||1800 µm|
|Chip size||45 mm x 15 mm (glass element)|
|Channel width||50 µm|
|Channel height||20 µm|
|Rockpore volume||2.3 µl|
|Combined volume inlet and outlet channel||0.9 µl|
|Combined volume of inlet and outlet hole||2.7 µl|
|Total internal volume||5.7 µl|
|Number of Inlets||1|
|Number of outlets||1|
|Inlet/outlet hole sizes on top of the chip||1.70 mm|
|Inlet/outlet holes size at channel||0.60 mm|
|Optical properties||Optical clear view from all sides|
|Supplied in Fluidic slide?||Yes|
|Material chip||Borosilicate glass|
|Material black cartridge||Polypropylene|
One simple but very effective way to clean a microchip is to flush an alkaline solution through the channels. A solution of 1 M sodium hydroxide in water works well but a lower concentration might also be sufficient. If traces of the cleaning solution remaining inside the chip after cleaning and rinsing with water pose a problem then ammonia can be used instead. Note that these solutions are caustic and can cause damage to e.g. the polyimide coating of fused silica capillaries. Also plastic parts should not be exposed to very alkaline solutions.
In order to aid in the removal of particulate matter, a water bath with ultrasonic agitation can be used, preferably while flushing a watery solution through the channels using a Fluidic connect kit.
Glass microchips can be heated (e.g. >400° C) causing any organic material adsorbed on the glass surface to degrade. Try to use lower temperatures first because burning the content could make it stick. Make sure you only heat the glass chip and not the plastic parts around it.
Concentrated sulphuric acid works well to dissolve organic material such as fibres which are difficult to remove with alkaline solutions, but because of the extremely corrosive nature of the material a cleaning procedure is not so easily implemented.
Please note that chips that were coated by Micronit have different guidelines for cleaning.
Chips that have Micronit’s standard hydrophobic coating can be cleaned with most organic solvents. IPA, acetone, ethanol and water should all be safe to use without damaging the coating. Do not clean the chips with any very acidic or alkaline chemical. Also, flush the chip with your cleaning material but don’t store the chip for many days with an organic solvent inside. Coated chips can be stored filled with water or air.
Have a look at our clogging prevention guide
Thermal properties Brorofloat® 33
Coefficient of Linear
α (20–300 °C)
3.25 x 10–6 K–1
(to ISO 7991)
Specific Heat Capacity
cp (20–100 °C)
0.83 KJ x (kg x K)–1
λ (90 °C)
1.2 W x (m x K)–1