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US 10,150,942 B2Granted
Control of pH and dissolved gas in medium
AssigneeXpand Biotechnology B.V.
InventorsEmerentius Gerardus Roosloot, Pieter Theo Elias Van Santen
Life of this patent
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Abstract
A method and device to adjust the concentration of at least two gasses in a fluid, wherein the method involves adjusting the concentration of a first gas in the fluid by adjusting the concentration of a second gas in the fluid wherein the first and second gases are kept separate until dissolved in the fluid.
Claims9
A method to adjust the concentration of O2 and the pH of a fluid, comprising
- a) adjusting the concentration of O2 in the fluid by controlling a flow of oxygen to the fluid, and
- b) adjusting the pH of the fluid by controlling a flow of CO2 into the fluid,
- wherein the O2 and CO2 are kept separate until dissolved in the fluid, whereby they adjust the pH and O2 concentration, and
- wherein the flow of O2 is controlled by a first gas chamber wherein the O2 is present, said chamber comprising a first membrane separating the fluid from the O2, wherein the first membrane is made of a gas permeable material, wherein the flow of CO2 is controlled by a second gas chamber wherein the CO2 is present, said chamber comprising a second membrane separating the fluid from the CO2, wherein the second membrane is made of a gas permeable material, and wherein the first and second gas chambers are separate from each other.
1 more element
A device to supply a first gas and a second gas to a fluid in a fluid container, comprising
- a) a first chamber containing a first gas for effecting and for adjusting a flow of the first gas into said fluid container in said device, the first chamber comprising a first membrane for separating the fluid from the first gas, wherein the first membrane is made of a gas permeable material, and
- b) a second chamber containing a second gas for effecting and for adjusting a flow of the second gas into said fluid container in said device, the second chamber comprising a second membrane for separating the fluid from the second gas, wherein the second membrane is made of a gas permeable material,
- wherein the chambers for effecting and adjusting the flow of the first gas and for effecting and adjusting the flow of the second gas and are separate from each other.
Dependencies are inferred from the claim text.