Method of calibrating a sheet type electrode

Details Method of calibrating a sheet type electrode Method of calibrating a sheet type electrode

1988-11-28

1991-06-18

Wallen, Thomas

Chemistry: analytical and immunological testing

Composition for standardization, calibration, simulation,...

204408, G01N 3300

Patent

active

050249517

ABSTRACT:
A method of measuring an ion-concentration characterized by a sample absorbed in an easily absorbing solution material and the absorbing material is brought into contact with a measuring portion to measure an ion-concentration 10/90 in the sample so that a highly accurate measurement can be achieved even though a quantity of the sample is small. In addition, the desired measurement can be carried out without using any instruments for sampling and needing any complicated pretreatments. A sheet for use in the calibration of an ion-concentration 10/90 measuring device characterized by a calibrating buffer solution absorbed in a chemically stabilized, hygroscopic, water-absorbing sheet eluting no ions and then the water-absorbing sheet is dried.

REFERENCES:
patent: 4649121 (1987-03-01), Ismail et al.
patent: 4816132 (1989-03-01), Kotani et al.

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