Apparatus and method for analytical determinations using amperometric techniques
First Claim
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1. A system for operating at least first and a second amperometric sensors, the system comprising:
- (a) a cartridge including;
(i) a first amperometric sensor in fluid flow communication with a liquid sample inlet and including a first electrode;
(ii) a second amperometric sensor in fluid flow communication with the liquid sample inlet and including a second electrode; and
(b) a control device for automatically adjusting voltage to the first and second sensor during testing of a sample so that the first and second electrodes are set to about the same potential such that the first and second amperometric sensors can be operated simultaneously.
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Abstract
A system for operating at least first and second amperometric sensors includes a cartridge and a control device. The cartridge includes a first amperometric sensor and a second amperometric sensor. The first amperometric sensor is in fluid flow communication with a liquid sample inlet and includes a first electrode. The second amperometric sensor is in fluid flow communication with a liquid sample and includes a second electrode. The control device sets the first and second electrodes to about the same potential such that the first and second amperometric sensors can be operated simultaneously.
14 Citations
28 Claims
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1. A system for operating at least first and a second amperometric sensors, the system comprising:
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(a) a cartridge including; (i) a first amperometric sensor in fluid flow communication with a liquid sample inlet and including a first electrode; (ii) a second amperometric sensor in fluid flow communication with the liquid sample inlet and including a second electrode; and (b) a control device for automatically adjusting voltage to the first and second sensor during testing of a sample so that the first and second electrodes are set to about the same potential such that the first and second amperometric sensors can be operated simultaneously. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of simultaneously operating at least first and second amperometric sensors, the method comprising:
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(a) providing a first amperometric sensor in fluid flow communication with a liquid sample inlet and including a first electrode; (b) providing a second amperometric sensor in fluid flow communication with the liquid sample inlet and including a second electrode; and (c) automatically adjusting the first and second electrodes to about the same potential during testing of a liquid sample provided through the liquid sample inlet, such that the first and second amperometric sensors can be operated simultaneously. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of operating at least first and second amperometric sensors, the method comprising:
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(a) setting a goal fluid potential value between electrodes in contact with a fluid sample; (b) reading a first electrode potential within the first amperometric sensor; (c) reading a second electrode potential within the second amperometric sensor; and (d) performing an automatic adjustment to the first and second electrode potentials during testing of the fluid sample that is in contact with the first and second amperometric sensors, to substantially maintain the goal fluid potential value between the first and second electrodes, such that the first and second amperometric sensors can be operated simultaneously. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification