Patents Assigned to Bactest Limited
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Publication number: 20170247275Abstract: We describe a method of determining a food-to-biomass ratio in an aqueous fluid the method comprising: providing an aqueous fluid comprising viable biomass and food for said biomass, and wherein there is insufficient available food to sustain all said viable biomass; using a sensor (for example a respirometer or a sensor for sensing an amount of ammonia, ammonium, nitrates or nitrites) to determine an amount of food in said aqueous fluid available to said biomass; determining a measure of viable biomass in said aqueous fluid by measuring polarisability of viable biomass cells in an AC electric field; and determining a food-to-biomass ratio from said amount of food and said measure of viable biomass.Type: ApplicationFiled: September 30, 2015Publication date: August 31, 2017Applicant: Bactest LimitedInventors: Derek Price, Toby William Rickett
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Publication number: 20150203389Abstract: We describe a method of closed-loop control of a waste water treatment plant, the method comprising: obtaining a fluid sample from a fluid of said plant; providing said fluid sample to a sealed chamber such that said fluid sample incompletely fills said sealed chamber leaving a headspace; incubating said fluid sample in said sealed chamber; determining a change in pressure in said headspace during said incubating; and controlling a degree of aeration of said waste water treatment plant responsive to said change in pressure. We also describe a method of measuring one or both of the food content and the biomass content of a fluid of a waste water treatment plant, the method comprising determining a value for one or both of food content and biomass content from a change in pres sure.Type: ApplicationFiled: August 8, 2013Publication date: July 23, 2015Applicant: Bactest LimitedInventors: Derek Price, Annie Brooking
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Patent number: 8795982Abstract: The invention provides an indirect pressure sensing system for non-invasive measurement of primary pressure in a sealed container, which communicates primary pressure changes from within the container, via a flexible diaphragm, to a secondary chamber wherein there is a defined relationship between the primary and secondary pressures, which enables a pressure sensor in the secondary chamber to generate a signal representing primary pressure in the sealed container, but to remain isolated from the contents of the sealed container. The pressure sensor can provide electrical outputs representing the pressure detected, and the outputs are fed to data processing means capable of producing a measurement of primary pressure. The system can have a liquid culture of cellular material (eg.Type: GrantFiled: January 25, 2013Date of Patent: August 5, 2014Assignee: Bactest LimitedInventor: Tony Carr
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Publication number: 20130130300Abstract: The invention provides an indirect pressure sensing system for non-invasive measurement of primary pressure in a sealed container, which communicates primary pressure changes from within the container, via a flexible diaphragm, to a secondary chamber wherein there is a defined relationship between the primary and secondary pressures, which enables a pressure sensor in the secondary chamber to generate a signal representing primary pressure in the sealed container, but to remain isolated from the contents of the sealed container. The pressure sensor can provide electrical outputs representing the pressure detected, and the outputs are fed to data processing means capable of producing a measurement of primary pressure. The system can have a liquid culture of cellular material (eg.Type: ApplicationFiled: January 25, 2013Publication date: May 23, 2013Applicant: Bactest LimitedInventor: Bactest Limited
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Patent number: 8389274Abstract: The invention provides an indirect pressure sensing system for non-invasive measurement of primary pressure in a sealed container, which communicates primary pressure changes from within the container, via a flexible diaphragm, to a secondary chamber wherein there is a defined relationship between the primary and secondary pressures, which enables a pressure sensor in the secondary chamber to generate a signal representing primary pressure in the sealed container, but to remain isolated from the contents of the sealed container. The pressure sensor can provide electrical outputs representing the pressure detected, and the outputs are fed to data processing means capable of producing a measurement of primary pressure. The system can have a liquid culture of cellular material (eg.Type: GrantFiled: May 6, 2011Date of Patent: March 5, 2013Assignee: Bactest LimitedInventor: Tony Carr
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Publication number: 20110312021Abstract: The invention provides an indirect pressure sensing system for non-invasive measurement of primary pressure in a sealed container, which communicates primary pressure changes from within the container, via a flexible diaphragm, to a secondary chamber wherein there is a defined relationship between the primary and secondary pressures, which enables a pressure sensor in the secondary chamber to generate a signal representing primary pressure in the sealed container, but to remain isolated from the contents of the sealed container. The pressure sensor can provide electrical outputs representing the pressure detected, and the outputs are fed to data processing means capable of producing a measurement of primary pressure. The system can have a liquid culture of cellular material (eg.Type: ApplicationFiled: May 6, 2011Publication date: December 22, 2011Applicant: Bactest LimitedInventor: Tony CARR
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Publication number: 20050170497Abstract: The invention provides an indirect pressure sensing system for non-invasive measurement of primary pressure in a sealed container, which communicates primary pressure changes from within the container, via a flexible diaphragm, to a secondary chamber wherein there is a defined relationship between the primary and secondary pressures, which enables a pressure sensor in the secondary chamber to generate a signal representing primary pressure in the sealed container, but to remain isolated from the contents of the sealed container. The pressure sensor can provide electrical outputs representing the pressure detected, and the outputs are fed to data processing means capable of producing a measurement of primary pressure. The system can have a liquid culture of cellular material (eg. micro organisms, plant tissue cells, animal cells etc.Type: ApplicationFiled: March 14, 2003Publication date: August 4, 2005Applicant: Bactest LimitedInventor: Tony Carr
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Patent number: D716452Type: GrantFiled: September 28, 2012Date of Patent: October 28, 2014Assignee: Bactest LimitedInventor: Bruce Hutchison
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Patent number: D753829Type: GrantFiled: October 23, 2014Date of Patent: April 12, 2016Assignee: Bactest LimitedInventor: Bruce Hutchison