Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Calibration solution and calibration method for sensor










Image Number 3 for United States Patent #5132000.

A calibration solution, which is used when measuring the ion concentration of solution under examination such as blood or other body fluids using a pH sensor or the like ion sensor with a solid electrode, is prepared by adding NaCl to a standard buffer solution and thus setting the ionic strength of the solution to be substantially identical with the ionic strength of solution under examination. A sensor calibration method is also disclosed, in which at least two reference calibration solutions having different pH values are prepared, the electromotive force of the sensor in these calibration solutions is measured by immersing the sensor in the solutions, and a calibration formula is produced from the electromotive force for the pH values of the reference calibration solutions. A predetermined amount of bicarbonate buffer solution is added to the calibration solution to maintain a substantially constant ionic strength of the solution, thus permitting simultaneous calibration of an ion sensor and a gas sensor.








 
 
  Recently Added Patents
Switched capacitor hold-up scheme for constant boost output voltage
Real-time demand prediction in a fast service restaurant environment
System and method for dynamic quality-of-service-based billing in a peer-to-peer network
DNA promoters and anthrax vaccines
Electrical terminal
Communication terminal, communication system, server apparatus, and communication connecting method
Bottle
  Randomly Featured Patents
Flow control apparatus and method
Video-supported planning of equipment installation and/or room design
Breathable low-emissivity metalized sheets
Spacer
Multiprocessor system having time slice bus arbitration for controlling bus access based on determined delay time among processors requesting access to common bus
Burner for reduced NOx emission and control of flame spread and length
Method for managing metamerism of color merchandise
Methods for production of an optical assay device
Bean bag toss game
Hollow porous microspheres made from dispersed particle compositions