US3857088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning a mercury-dropping electrode of a through-flow polarographic analyzer
Assignee: Vyzkumny Ustav Organickych Syntez AS
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Filing: 1972-04-07
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Granted: 1974-12-24
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Expires: 1992-04-07
Abstract
Abstract Solid impurities that accumulate on the mercury dropping electrode of a polarographic analyzer are periodically dissolved by washing with a suitable solvent at prescribed intervals such intervals are chosen to be less than the time necessary for such accumulation to become sufficient to adversely affect the polarographic current during the continuous measurement, in the analyzer, of a test liquid containing such impurities. The solvent is introduced into the analyzer through an input port separate from that used to introduce the test liquid. The washing is accomplished by flowing the solvent over the electrode without immersing it in the solvent.
Inventors
- 👤 M Vesely
- 👤 Z Bohac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:24
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/34; G01N27/38
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
143 words
In a polarographic analyzer including a first input port, an output port having an overflow port at a first vertical level within the analyzer, a measuring space defined between the first input port and the output port, means for introducing into the first input port a test liquid having solid impurities therein, and electrode means disposed in the measUring space for dropping mercury through the test liquid introduced into the first input port, the improvement which comprises: means including a second input port for introducing into the measuring space a solvent for the solid impurities; and means for positioning the electrode means within the measuring space to expose the electrode means to the solvent introduced through the second input port to dissolve solid impurities that accumulate on the electrode means, the solvent flowing over the electrode without immersing the electrode in the solvent.
Claim 2
Dependent Claim
143 words
In a polarographic analyzer including a first input port, an output port having an overflow port at a first vertical level within the analyzer, a measuring space defined between the first input port and the output port, means for introducing into the first input port a test liquid having solid impurities therein, and electrode means disposed in the measUring space for dropping mercury through the test liquid introduced into the first input port, the improvement which comprises: means including a second input port for introducing into the measuring space a solvent for the solid impurities; and means for positioning the electrode means within the measuring space to expose the electrode means to the solvent introduced through the second input port to dissolve solid impurities that accumulate on the electrode means, the solvent flowing over the electrode without immersing the electrode in the solvent.
Claim 3
Dependent Claim
35 words
An analyzer as defined in claim 1, in which the positioning means vertically locates the electrode means above the overflow port, and the introducing means comprises means for flowing the solvent over the electrode means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |