03937615 is referenced by 53 patents and cites 3 patents.

An auto-ranging glucose measuring system including a device capable of mixing a glucose containing solution and a diluent in a variable ratio, a glucose oxidase enzyme converter column for converting the diluted glucose solution to hydrogen peroxide as one of the products, an amperometric detector for producing an analog electric signal proportional to the concentration of hydrogen peroxide, a high-low limit circuit for producing a pulse output when the analog electric signal is greater than the preset high limit of the linear span of the detector or is less than the preset low limit of the noise level of the detector, an electronic motor speed changing circuit interposed between a source of alternating current and a pump motor in said mixing device, having a frequency dividing network controllable by a register whose contents may be incremented or decremented by a pulse from the high-low limit circuit.

Title
Auto-ranging glucose measuring system
Application Number
5/533553
Publication Number
3937615
Application Date
December 17, 1974
Publication Date
February 10, 1976
Inventor
George R Moreland
Green Lane
PA, US
Peter J Clack
Doylestown
PA, US
Agent
Raymond F MacKay
Assignee
Leeds & Northrup Company
PA, US
IPC
G01N 1/14
G01N 27/52
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