CN107449818A - The calibration method of easy to operate PH meters - Google Patents
The calibration method of easy to operate PH meters Download PDFInfo
- Publication number
- CN107449818A CN107449818A CN201710671824.5A CN201710671824A CN107449818A CN 107449818 A CN107449818 A CN 107449818A CN 201710671824 A CN201710671824 A CN 201710671824A CN 107449818 A CN107449818 A CN 107449818A
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- CN
- China
- Prior art keywords
- meters
- calomel electrode
- electrode
- rinsed
- operate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/4163—Systems checking the operation of, or calibrating, the measuring apparatus
- G01N27/4165—Systems checking the operation of, or calibrating, the measuring apparatus for pH meters
Abstract
The invention discloses a kind of calibration method of easy to operate PH meters, comprise the following steps：1）PH meters are switched on power, then open PH meters preheating 30 minutes；2）Remove the electrode sleeve of calomel electrode；Then calomel electrode is rinsed using deionized water, rinse complete after suck using filter paper ionized water on calomel electrode；Calomel electrode is placed stand-by aside.The numerical value that the present invention is measured by the solution and PH measurements that configure known pH value is compared, the deviation of PH meters can effectively be judged, so as to be accurately adjusted to PH, so as to ensure that PH meters can measure the PH numerical value of solution when in use, so as to greatly heighten the success rate of experiment；After calibration is complete, PH meters are rinsed, solution can be avoided to remain on calomel electrode, avoided and be difficult to clean up when use next time, cause the pH value of measure higher simultaneously.
Description
Technical field
The invention belongs to mechanical alignment art field, the calibration method counted more particularly, to a kind of easy to operate PH.
Background technology
PH meters are indispensable instruments among laboratory, and the instrument can aid in the accurate acid-base value for measuring solution,
So as to be favorably improved the success rate of experiment；But PH meters can cause the accuracy of instrument to occur after long period use
Deviation, therefore accurately calibration is carried out to instrument and is necessary；After accurate alignment, specification is carried out if do not counted to PH
Processing, it can cause PH meters that deviation occurs again, so that can not normal use.
The content of the invention
The present invention is for overcome the deficiencies in the prior art, there is provided a kind of calibration side of the easy to operate PH meters of working specification
Method.
To achieve these goals, the present invention uses following technical scheme：A kind of calibration method of easy to operate PH meters,
Comprise the following steps：
1）PH meters are switched on power, then open PH meters preheating 30 minutes；
2）Remove the electrode sleeve of calomel electrode；Then calomel electrode is rinsed using deionized water, after completion is rinsed
The ionized water on calomel electrode is sucked using filter paper；Calomel electrode is placed stand-by aside；
3）5g sodium hydrate solids are weighed using electronic balance, sodium hydroxide is placed among clean beaker, is put into 20mL
Deionized water, low-grade fever dissolved；
4）Sodium hydroxide solution after dissolving is poured among clean graduated cylinder, accurately reads liquor capacity；And calculate molten
The pH value of liquid；
5）Rinse is carried out to calomel electrode using the sodium hydroxide solution configured；Then calomel electrode is inserted into what is configured
Among sodium hydroxide solution；The reading for reading PH meters compares with calculated value, is calibrated；
6）PH meters are reused into deionized water to be rinsed, electrode sleeve on set again is completed afterwards rinsing.
The numerical value that the present invention is measured by the solution and PH measurements that configure known pH value is compared, and can effectively be judged
Go out the deviation of PH meters, so as to be accurately adjusted to PH, so as to ensure that PH meters can be measured when in use
The PH numerical value of solution, so as to greatly heighten the success rate of experiment；After calibration is complete, PH meters are rushed simultaneously
Wash, solution can be avoided to remain on calomel electrode, avoid and be difficult to clean up when use next time, cause the PH of measure
It is worth higher.
Further, step 2）Middle washing time is three times；It can ensure that calomel electrode is washed completely by rinsing three times
Only, so as to avoid because do not clean cause measure when there is deviation.
Further, step 5）In glass bar agitating solution clockwise is used before electrode is inserted；By being carried out to solution
Stirring so that the pH value of solution everywhere is all identical, reduces the error of calibration period appearance.
In summary, the numerical value that the present invention is measured by the solution and PH measurements that configure known pH value is compared, can
The effective deviation for judging PH meters, so as to be accurately adjusted to PH, so as to ensure PH meters use when
The PH numerical value of solution can be measured by waiting, so as to greatly heighten the success rate of experiment；After calibration is complete, by PH simultaneously
Meter is rinsed, and solution can be avoided to remain on calomel electrode, is avoided and is difficult to clean up when use next time, causes
The pH value of measure is higher.
Embodiment
In order that those skilled in the art are better understood from the present invention program, it is right below in conjunction with the embodiment of the present invention
Technical scheme in the embodiment of the present invention carries out clear, complete description.
A kind of calibration method of easy to operate PH meters, comprises the following steps：1）PH is placed into one 25 DEG C of closed loop
In border, and the humidity in measuring environment, and keep a record；Then PH meters are switched on power, then opens 30 points of PH meters preheating
Clock；2）Remove the electrode sleeve of calomel electrode；Then calomel electrode is flushed three times using deionized water, completes to make afterwards rinsing
The ionized water on calomel electrode is sucked with filter paper；Calomel electrode is placed stand-by aside.
3）5g sodium hydrate solids are weighed using electronic balance, sodium hydroxide is placed among clean beaker, is put into
20mL deionized water, low-grade fever are dissolved；Using heating water bath untill 30 degree, and continued on during low-grade fever
Glass bar is stirred；4）Sodium hydroxide solution after dissolving is poured among clean graduated cylinder, accurately reads liquor capacity；
And calculate the pH value of solution.
5）Rinse is carried out to calomel electrode using the sodium hydroxide solution configured；Then calomel electrode is inserted into configuration
Among good sodium hydroxide solution, sodium hydroxide solution is stirred clockwise using glass bar before calomel electrode inserts；
Then the rotation by calomel electrode progress gently so that electrode completely attaches to solution；The reading for reading PH meters is done with calculated value
Compare, calibrated；After calibration is complete, a solution is reconfigured to be determined again；6）By PH meter reuse from
Sub- water is rinsed, and electrode sleeve on set again is completed afterwards rinsing.
Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, it should all belong to the scope of protection of the invention.
Claims (3)
1. a kind of calibration method of easy to operate PH meters, comprises the following steps：
1) PH meters are switched on power, then opens PH meters preheating 30 minutes；
2) electrode sleeve of calomel electrode is removed；Then calomel electrode is rinsed using deionized water, after completion is rinsed
The ionized water on calomel electrode is sucked using filter paper；Calomel electrode is placed stand-by aside；
3) 5g sodium hydrate solids are weighed using electronic balance, sodium hydroxide is placed among clean beaker, is put into 20mL
Deionized water, low-grade fever dissolved；
4) sodium hydroxide solution after dissolving is poured among clean graduated cylinder, accurately reads liquor capacity；And calculate molten
The pH value of liquid；
5) rinse is carried out to calomel electrode using the sodium hydroxide solution configured；Then calomel electrode is inserted into what is configured
Among sodium hydroxide solution；The reading for reading PH meters compares with calculated value, is calibrated；
6) PH meters are reused into deionized water to be rinsed, electrode sleeve on set again is completed afterwards rinsing.
A kind of 2. calibration method of easy to operate PH meters according to claim 1, it is characterised in that：Rinsed in step 2)
Number is three times.
A kind of 3. calibration method of easy to operate PH meters according to claim 1, it is characterised in that：Inserted in step 5)
Glass bar agitating solution clockwise is used before entering electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671824.5A CN107449818A (en) | 2017-08-08 | 2017-08-08 | The calibration method of easy to operate PH meters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671824.5A CN107449818A (en) | 2017-08-08 | 2017-08-08 | The calibration method of easy to operate PH meters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107449818A true CN107449818A (en) | 2017-12-08 |
Family
ID=60491241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710671824.5A Withdrawn CN107449818A (en) | 2017-08-08 | 2017-08-08 | The calibration method of easy to operate PH meters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107449818A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6275347A (en) * | 1985-09-30 | 1987-04-07 | Terumo Corp | Ph measurement |
| CN102520048A (en) * | 2011-12-31 | 2012-06-27 | 深圳市申议实业有限公司 | PH meter and calibration method thereof |
| CN203772794U (en) * | 2014-02-27 | 2014-08-13 | 宝钢不锈钢有限公司 | Portable PH meter calibration device |
-
2017
- 2017-08-08 CN CN201710671824.5A patent/CN107449818A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6275347A (en) * | 1985-09-30 | 1987-04-07 | Terumo Corp | Ph measurement |
| CN102520048A (en) * | 2011-12-31 | 2012-06-27 | 深圳市申议实业有限公司 | PH meter and calibration method thereof |
| CN203772794U (en) * | 2014-02-27 | 2014-08-13 | 宝钢不锈钢有限公司 | Portable PH meter calibration device |
Non-Patent Citations (3)
| Title |
|---|
| 殷海霞 等: "pH计使用中有关问题的研究", 《价值工程》 * |
| 田继远: "pH计原理及有效操作", 《啤酒科技》 * |
| 肖薇薇: "浅谈PH计的使用与维护", 《江西化工》 * |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171208 |
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| WW01 | Invention patent application withdrawn after publication |