EP1523673A1 - Behälter zur aufbewahrung und kalibrierung einer ph-messsonde - Google Patents
Behälter zur aufbewahrung und kalibrierung einer ph-messsondeInfo
- Publication number
- EP1523673A1 EP1523673A1 EP03740338A EP03740338A EP1523673A1 EP 1523673 A1 EP1523673 A1 EP 1523673A1 EP 03740338 A EP03740338 A EP 03740338A EP 03740338 A EP03740338 A EP 03740338A EP 1523673 A1 EP1523673 A1 EP 1523673A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring probe
- substance
- container
- storage device
- container according
- Prior art date
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- G01N27/28—Electrolytic cell components
- G01N27/283—Means for supporting or introducing electrochemical probes
-
- 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
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/36—Glass electrodes
Definitions
- the invention can be used in the field of measurement technology, in particular for those measurement probes which are very sensitive to environmental influences and which have to be introduced between certain measurement processes either for protection against external influences or for calibration in certain substances, for example storage or calibration liquids , This is the case, for example, with potentiometric measuring probes which are used in the field of physical chemistry for measuring chemical quantities, such as potentiometric PH measuring probes.
- the invention relates to a container for a measuring probe, in particular a PH probe, which contains a first substance into which the measuring probe can be at least partially inserted and which has a receptacle for the measuring probe.
- Such containers are known and contain, for example, a storage solution so that a measuring probe can be inserted into the container between two measuring inserts in order to protect them permanently. This is particularly necessary in the case of PH measuring probes which have a partially permeable membrane, for example in the case of a glass electrode, which has to be stored in a storage solution.
- a container can be, for example, a plastic tube that is open on one side, into which the measuring probe can be inserted from one end and that is filled with the storage solution.
- a standard ground adapter is usually used as a receptacle for the measuring probe, which on the one hand seals the tube through the standard ground joint and on the other hand has an opening for inserting and positioning the measuring probe.
- One problem is, for example, that when the measuring probe is inserted and removed from the opening, there is an overpressure or underpressure in the container, which is conducted into the interior of the probe by means of the diaphragm and there a deterioration in the response times of the probe and a reduction in the Service life.
- KCl potassium chloride
- Containers for storing a calibration solution for measuring probes are also known, into which such a measuring probe is inserted shortly before a measuring process for calibration. With these containers there are basically similar difficulties as with those containers which are used to store measuring probes.
- the present invention has for its object to provide a container of the type mentioned that enables easy handling of a measuring probe.
- the object is achieved according to the invention by a storage device in which the first substance is arranged, by at least one further substance which is separate from the the first substance is arranged in the container, and by a positioning device for the measuring probe, the measuring probe optionally being at least partially insertable into the first substance or one of the further substances.
- two substances can be stored separately from one another in the container, which can serve different purposes in connection with the measuring probe, for example a substance for storing the measuring probe and a substance for calibration.
- the measuring probe When using the measuring probe, it is therefore not necessary to carry several containers into which the measuring probe can be inserted, but the number of accessories for the measuring probe is reduced.
- the positioning device By actuating the positioning device, the measuring probe can be introduced into the substance that is intended for the purpose just intended. From the position of the storage device or the positioning device, the user can also recognize which substance is just arranged so that the measuring probe can be inserted into it. The confusion of different containers is therefore excluded.
- the storage device can be filled with only one substance, which can be replaced, for example, after contamination or contamination. However, it can also be provided that the first and second substances are arranged separately from one another in the storage device.
- the storage device and / or the receptacle can be movable in such a way that the measuring probe can optionally be at least partially introduced into the first substance or the further substance.
- An advantageous embodiment of the invention provides that under the first and the at least one further substance there is at least one substance that is used to mount the measuring probe and / or at least one substance that serves to calibrate the measuring probe.
- the measuring probe Since the measuring probe is usually stored in the substance which is intended for its storage, this and the measuring probe can be arranged in the container, so that the container and the measuring probe are kept together at all times.
- a substance for calibrating the measuring probe can be arranged in the same container, so that all substances required for a measurement are always kept together with the measuring probe and are easily accessible at any time. This also simplifies the use of the measuring probe.
- the invention can also be advantageously configured such that the storage device can be rotated, pivoted or displaced by the positioning device and that the first substance and the at least one further substance are arranged in the storage device in such a way that the measuring probe can optionally be introduced into one of the substances.
- the measuring probe can thus be inserted into the receptacle in each case and the positioning device can be actuated in order to achieve the desired goal, in order to either store or calibrate the measuring probe for a longer time.
- the measuring probe is always inserted into the same receptacle and is always in a definite ned and recognizable state within one of the substances.
- the positioning device can be actuated from the outside of the container.
- the container then does not need to be opened and, advantageously, the measuring probe also does not have to be removed in order to actuate the positioning device and to bring the measuring probe into connection with another substance in each case.
- the positioning device can be designed as a slide on which different chambers for different substances are arranged or as a rotatable roller or as a turret with different chambers for different substances.
- the container then has a rotary or slide button on the outside for actuating the positioning device.
- the measuring probe can be temporarily pulled back a little to actuate the positioning device.
- the positioning device is moved further by one position by completely or partially pulling out and inserting the measuring probe into the container, for example by means of a sawtooth mechanism.
- the measuring probe is then, for example, in the basic state in a substance used for storage and is at least partially pulled out of the container for calibration and inserted again. It is then calibrated and then removed for measurement. If it is then pushed back into the container, the positioning device is automatically moved further into the next position, which is used again for storing the measuring probe. It is particularly advantageous if an indicator for the position of the storage device is provided on the outside of the container. This applies in particular if the positioning device is automatically moved on.
- the storage device can accommodate one substance or preferably two substances. However, it can also be designed in such a way that it takes up more than two substances if, for example, different substances are required for storage or, which is more likely, different substances for calibrating a measuring probe.
- a multi-point calibration not only the sensitivity of the measuring probe (slope), but also a possible working point shift (zero point shift) can be measured or different reference points for a reference measurement curve can be determined.
- the container according to the invention can also be advantageously designed such that the receptacle has an opening into which the measuring probe can be inserted, the edge of the opening being liquid-tight with the measuring probe. In this way, the measuring probe can remain in the container for a long time be left without any of the substances in the container escaping. Ideally, when the measuring probe is pulled out of the container at the edge of the opening, any substance that is still on the measuring probe is wiped off.
- the edge of the opening can consist of an elastic and advantageous acid-resistant material.
- Positioning device can be actuated without the measuring probe being completely pulled out of the opening, giving up the liquid-tight seal. In this way, even when changing the substance into which the measuring probe is inserted, no problem can arise because parts of a substance in the container are discharged with the measuring probe.
- the storage device can be separated and / or exchanged from the other parts of the container.
- the storage device can be provided, for example, as a replaceable cartridge in which various chambers are provided for storing the various substances required for the respective measuring probe. The cartridge can then be replaced according to usage.
- the storage device has at least one sponge-like body in which one of the substances is bound.
- Such a sponge-like body can be, for example, an open-cell foam or a similar body.
- the respective substance is bound to this body in such a way that it does not fall out of the storage device even when handling the container, or drips out if it is a fluid.
- At least one of the substances is a gel or a highly viscous liquid.
- Such substances can be stored particularly well in a storage device without fear of dripping out even if the storage device is moved, so that one or more of the chambers in which the substances are located are turned upside down.
- the invention also relates to a measuring device, in particular a PH measuring device with a container according to one of claims 1 to 10 and a measuring probe, the container being designed as a cover cap for one end of the measuring probe.
- the measuring probe and container can be stored together in a particularly inexpensive and space-saving manner.
- the invention relates to a method for operating a measuring probe in connection with a container according to one of claims 1 to 10, in which the measuring probe, starting from a position in the container in which it is introduced into a substance, the for storage, subsequently introduced by actuating the positioning device into a substance serving for its calibration and calibrated there and then removed from the container for carrying out a measurement.
- This process represents a particularly simple method for using the measuring probe in connection with the container according to the invention, in which errors in operation are reliably excluded.
- FIG. 1 and 2 show a container according to the invention with a storage device in a storage position, FIG. 2 showing the storage device in a cross section,
- FIG. 4 showing the storage device in cross section
- FIG. 5 and 6 show the position of the storage device in which a measuring probe is inserted into a substance in order to calibrate the measuring probe, the storage device being shown in cross section in FIG. 6,
- FIG. 7 and 8 show an external view of a container with an indication of the position of the storage device
- FIG 9 shows a container according to the invention, which as
- Cover cap is formed for the end of a measuring probe.
- FIG. 1 shows a container 1 for a PH measuring probe, which is a rotationally symmetrical cap on the tip of the measuring probe is attachable.
- the container 1 is shown in cross section. It advantageously consists of a stable, in particular acid-proof plastic.
- the container has a storage device 2, which comprises a cylindrical housing 2a and therein a plurality of chambers 2b, 2c for receiving different substances.
- the housing 2a of the storage device 2 is fixedly connected to a shaft 3 which is rotatably mounted on the container 1. As a result, the housing 2a can be rotated about the central axis of the shaft 3.
- a spring 4 is placed around the shaft 3 and is fixed in place on a shoulder 5 of the housing 1.
- the spring 4 causes a torque on the shaft 3 in the direction of the arrow 6.
- a nose 7 on the housing 2a lies in the position shown on a stop 8 of the container 1, so that the housing is fixed in a defined position.
- the storage device 2 is arranged in this position in such a way that the measuring probe 9 is inserted into a first one
- Substance 10 can be introduced, which is used to store the measuring probe.
- the first substance 10 is arranged in the first chamber 2b of the storage device 2.
- the measuring probe 9 has an exposed glass electrode 11 at its end, with a diaphragm consisting of a porous glass vessel wall.
- This porous glass vessel wall must be able to dry out or penetrate foreign substances and cause damage to the internal electrolyte or blockage of the diaphragm by the first
- FIG. 3 shows a side view of the container with the storage device 2, in another position, which has arisen from the position shown in FIG. 2 by rotating the storage device counter to the direction of the arrow 12 by approximately 180 degrees.
- the arrow 12 indicates the force effect which acts on the shaft 3 through the spring 4, since the spring 4 has been tensioned by the rotation of the storage device 2.
- the nose 7 now lies against a second stop 13 fixedly arranged in the container 1, so that the storage device 2 is also in a defined and fixed state in this position.
- the arrow 14 indicates the action of force on the shaft 3, by means of which the storage device 2 is supported in the housing 1.
- the storage device 2 can rest on a support device 14 of the container 1, which also contains the stop 8.
- FIG. 4 shows in section that the storage device 2 is oriented in its other angular position such that the chambers 2b and 2c are now rotated by 180 degrees with respect to FIG. 2.
- the corresponding substances 10, 15 are now arranged in such a way that the measuring probe 9, when it is moved towards the storage device 2, can be immersed in the substance 15, which consists of a gel absorbed in a sponge-like body and for calibrating the measuring probe 9 serves.
- the nose 7 is guided past the stationary stop 13 by deforming the housing 2a, so that after a further removal of the measuring probe 9 by pulling it out of the storage device 2, the storage device rotates counterclockwise by the action of the spring 4 until the nose 7 moves to the stop 8 of the container 1.
- the measuring probe can be reinserted into the container 1 for longer storage without changes to the container having to be carried out manually. It is thereby avoided that the probe 9 is mistakenly stored in a calibration substance 15 for too long.
- the substance for storing / storing the measuring probe and the substance for calibration can, for example, be liquids in the normal state, but are bound in a polymerized hydrogel for better handling.
- a rotatable turret-like device can also be used, in the chambers of which several different substances can be kept ready.
- FIG. 5 shows the state in which the nose 7 has already moved past the fixed stop 13 and the probe is inserted into the storage device 2.
- the storage device 2 is prevented from rotating counterclockwise by the inserted probe under the action of the force of the spring 4.
- FIG. 6 shows in cross section the sketch of the measuring probe 9, which has been introduced into the calibration substance 15 so far that the glass housing wall 11 is entirely in the calibration substance 15.
- FIGS. 7 and 8 an external view of the container 1 is shown in a detail, wherein a display window 16 can be seen in which a display disc 17 with an arrow 18 moves.
- the arrow can assume two different positions according to the position of the storage device, since the indicator disc 17 is firmly connected to the shaft 3 of the storage device.
- the arrow 18 points to the display "disturb".
- the storage device 2 is rotated such that the first chamber 2b faces the measuring probe 9 and this can be introduced into the first substance 10, which serves to mount the measuring probe 9.
- the arrow 18 points to the display “cal ph 8.8”.
- the storage device is in a position in which the further substance 15 faces the measuring probe 9 and this for calibration in the storage device 2 can be introduced.
- the indicator disc 17 can also have an actuating button, by means of which the indicator disc and with it the shaft 3 and thus the storage device 2 can be rotated by hand.
- the rotation of the shaft 3 can also be done by other actuators, not shown.
- the positioning device comprises the shaft 3, the spring 4, the nose 7 and the stops 8 and 13 and, if appropriate, a drive for the shaft 3 or the storage device 2.
- the further substance 15 consists of a gel which has a pH value of 8.8, so that the measuring probe 9 can be calibrated with this known value.
- FIG. 9 schematically shows a larger section of the measuring probe 9 with a part of its handle 9a which has a larger diameter than the tip of the measuring probe 9.
- the handle 9a has a bead 9b on its circumference, over which a bead la of the container 1 snaps over when the probe is inserted into the container 1.
- the container 1 can thus be stably attached to the measuring probe as a cover cap.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002133237 DE10233237A1 (de) | 2002-07-22 | 2002-07-22 | Messsonde mit einem Behälter und Verfahren zum Betrieb der Messsonde |
DE10233237 | 2002-07-22 | ||
PCT/EP2003/006701 WO2004010128A1 (de) | 2002-07-22 | 2003-06-25 | Behälter zur aufbewahrung und kalibrierung einer ph-messsonde |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1523673A1 true EP1523673A1 (de) | 2005-04-20 |
Family
ID=30128228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03740338A Withdrawn EP1523673A1 (de) | 2002-07-22 | 2003-06-25 | Behälter zur aufbewahrung und kalibrierung einer ph-messsonde |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1523673A1 (de) |
DE (1) | DE10233237A1 (de) |
WO (1) | WO2004010128A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3066823B1 (fr) * | 2017-05-26 | 2020-12-04 | Commissariat Energie Atomique | Cartouche de mesure electrochimique |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1566161A (de) * | 1967-05-08 | 1969-05-09 | ||
US4016063A (en) * | 1975-08-06 | 1977-04-05 | Desmond Arpad Radnoti | Electrode shield |
US4260950A (en) * | 1979-07-05 | 1981-04-07 | Delphian Corporation | Automatic portable pH meter and method with calibration receptacle |
DE3215768A1 (de) * | 1982-04-28 | 1983-11-03 | Dipl.Ing. Ulrich Knick Elektronische Meßgeräte GmbH & Co, 1000 Berlin | Elektrodenanordnung fuer ph-wert- und aehnliche messungen in fluessigkeiten |
US4473458A (en) * | 1983-08-30 | 1984-09-25 | Instrument Technology Incorporated | Ion measuring device with self-contained storage of standardizing solution |
US5582696A (en) * | 1994-05-31 | 1996-12-10 | Health Craft International, Inc. | Glucose level monitoring apparatus |
DE4421062C2 (de) * | 1994-06-16 | 1998-04-16 | Prominent Dosiertechnik Gmbh | Transport- und Lageranordnung für eine Elektrode und Verwendung dieser Anordnung |
JPH08247987A (ja) * | 1995-03-15 | 1996-09-27 | Omron Corp | 携帯型測定器 |
JP3391945B2 (ja) * | 1995-07-08 | 2003-03-31 | 株式会社堀場製作所 | イオン濃度測定装置 |
JPH09196882A (ja) * | 1996-01-19 | 1997-07-31 | Marubishi Baioenji:Kk | 自動電極校正装置 |
DE10024564A1 (de) * | 2000-05-19 | 2001-11-22 | Knick Elektronische Mesgeraete | Sondeneinrichtung zur Aufnahme, Positionierung, Kalibrierung und/oder Wartung einer Meßelektrode |
-
2002
- 2002-07-22 DE DE2002133237 patent/DE10233237A1/de not_active Withdrawn
-
2003
- 2003-06-25 EP EP03740338A patent/EP1523673A1/de not_active Withdrawn
- 2003-06-25 WO PCT/EP2003/006701 patent/WO2004010128A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2004010128A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004010128A1 (de) | 2004-01-29 |
DE10233237A1 (de) | 2004-02-12 |
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