CN204882489U - Automatic titration system - Google Patents
Automatic titration system Download PDFInfo
- Publication number
- CN204882489U CN204882489U CN201520561252.1U CN201520561252U CN204882489U CN 204882489 U CN204882489 U CN 204882489U CN 201520561252 U CN201520561252 U CN 201520561252U CN 204882489 U CN204882489 U CN 204882489U
- Authority
- CN
- China
- Prior art keywords
- sample
- standard solution
- color
- bottle
- titration system
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model provides an automatic titration system, include: stock solution bottle, coaxial diplopore part, flowmeter, solenoid valve and point gum machine. The inside splendid attire normal solution of stock solution bottle, coaxial diplopore part includes: the liquid pipeline that leaks hopper -shaped is established at the outside gas piping of liquid pipeline tip with the cover, transfer line and stock solution bottle intercommunication are passed through to the main aspects of liquid pipeline, the flowmeter sets up on the transfer line, the solenoid valve sets up on the transfer line, the point gum machine is through taking over the intercommunication with gas piping. This automatic titration system can guarantee that the volume specification of liquid drop is unanimous and enough little, and the precision of experiment is titrated in effective improvement, alleviates the experimenter's pressure and work load, reduces the experiment cost of labor, and simultaneously, the change of the accurate monitoring sample colour of ability makes the experimental result more accurate.
Description
Technical field
The utility model relates to technical field of experiment equipment, particularly a kind of automatic Titration system.
Background technology
Titration is chemistry, biological, and the technology that the fields such as medical science are conventional and means, it determines the content of test substance by the quantitative reaction of two kinds of solution.In general, for acid base neutralization titration, color change can occur when reaction reaches terminal, laboratory technician relies on the change of this color to determine completing of reaction.
The precision that during titration, each dropping liquid drips is very important, for the burette, lml is about 20, and namely one is about 0.05ml, but end reaction sometimes only need the half of 0.05ml or three/first-class more small size time, the burette just can not meet such require that.If continue to use the burette, then the excessive titration data that causes can be forbidden because of the standard solution volume produced.Especially for high-precision titration experiments, the drop of high precision small size is just more important.
For the technology producing more consistent fine droplet, have in prior art and use the accurate titration system of PLC to carry out titration, this system uses servo driver drives servomotor, the movement of Electric Machine Control syringe piston, the titration of buret is controlled by the movement of piston, within the system in each dropping liquid instillation preprepared beaker, this beaker is placed on electronic scale, the quality at every turn weighed is sent to PLC by electronic scale, once the quality that weighs of the discovery of PLC and the quality that oneself sets inconsistent, then PLC will send the order of change to motor, this system can produce comparatively consistent drop, but each dropping liquid drips and can only reach 0.03ml, not also very little relative to the burette.
Therefore, equipment of the prior art or device, because the limitation of its structure, can not produce the drop of high precision small size, cannot meet the requirement of high-precision titration experiments.Simultaneously, existing apparatus by personal monitoring and stop experiment, from to experiment terminate, laboratory technician needs to observe titration experiments for a long time, once carry out the experiment of large batch of drop reaction, poses a big pressure to the eyes of laboratory technician and health, too increase the cost of experiment, and personal monitoring can not the change of accurate measurements solution colour, causes titration process to stop not in time, increases the probability that experimental result is made mistakes.
Utility model content
The utility model provides a kind of automatic Titration system, solve or partly solve the drop that can not produce high precision small size in prior art, personal monitoring can not the change of accurate measurements solution colour and the technical matters causing experimenter's labour intensity excessive, achieve ensure drop volume specification unanimously and enough little, the precision of effective raising drop reaction experiment, alleviate pressure and the workload of experimenter, reduce experiment cost of labor, and guarantee the change of accurate measurements sample color, make experimental result technique effect more accurately.
A kind of automatic Titration system that the utility model provides, for the content of determinand in test samples, described sample is arranged in sample plasma bottle, and described titration system comprises:
Liquid storage bottle, the standard solution of inner splendid attire and described specimen reaction;
Coaxial diplopore parts, comprising: funnelform liquid line and the gas piping being set in described liquid line small end outside; The large end of described liquid line is communicated with described liquid storage bottle by woven hose, and the small end of described liquid line is positioned at above the bottleneck of described sample plasma bottle;
Flowmeter, is arranged on described woven hose;
Solenoid valve, is arranged on described woven hose, between described flowmeter with described coaxial diplopore parts;
Point gum machine, is communicated with described gas piping by adapter;
Wherein, described point gum machine interruption passes into gas to described gas piping, makes the standard solution in described liquid line instill described sample plasma bottle with setpoint frequency; After sample in described sample plasma bottle and described standard solution react, color changes, the infusion volume of standard solution described in described cmf record, and then determines the content of determinand in described sample.
As preferably, described point gum machine and cylinder are communicated with by take over, and described cylinder is for described point gum machine air feed;
The output terminal of described cylinder is communicated with described liquid storage bottle by adapter;
Described adapter between described cylinder and liquid storage bottle arranges reduction valve;
Wherein, described cylinder passes into gas in described liquid storage bottle, and the standard solution in liquid storage bottle described in described gas-powered flows to the liquid line of described coaxial diplopore parts.
As preferably, described titration system also comprises:
Infrared ray sensor, is arranged on the below of described liquid line bottom end outlet, for detecting the drippage quantity of described standard solution;
Color sensor, is arranged on outside described sample plasma bottle, for detecting the change of sample color in described sample plasma bottle;
Processing unit, is electrically connected with described infrared ray sensor and color sensor;
Relay, is electrically connected with described processing unit and described solenoid valve; Described relay can control opening or closing of described solenoid valve;
Wherein, described color sensor sends color characteristic signal to described processing unit; When the color of described sample changes, described color characteristic signal correspondence changes, after described processing unit receives the described color characteristic signal of change, shutdown signal is sent to described relay, make described closed electromagnetic valve, and then making the standard solution in described liquid line stop drippage downwards, described infrared ray sensor detects the drippage quantity of standard solution described in this process and produces number of drops signal, and described processing unit receives and stores described number of drops signal.
As preferably, described processing unit is data collecting card.
As preferably, described titration system also comprises:
Magnetic stirring apparatus, comprising: base and stirrer;
Described sample plasma bottle is arranged on described base; Described stirrer is arranged in the sample of described sample plasma bottle inside;
Wherein, described magnetic stirring apparatus work, described stirrer produces rotation under magneticaction, and the sample in described sample plasma bottle and described standard solution be abundant hybrid reaction under the turning effort of described stirrer.
The one or more technical schemes provided in the embodiment of the present application, at least have following technique effect or advantage:
1, the liquid line owing to have employed coaxial diplopore parts is communicated with liquid storage bottle, gas piping is communicated with point gum machine, flowmeter is set between liquid storage bottle with coaxial diplopore parts simultaneously, the pressure gas of certain frequency acts in the gas piping of coaxial diplopore parts by point gum machine, the standard solution drop of liquid line bottom is subdivided, and frequency is larger, and the droplet size flow through is less, the degree of segmentation will be higher, and the volume of each standard solution will be less; In the process of standard solution drippage, liquid storage bottle is constantly to liquid line transfer criteria solution, and the flow that flowmeter can adjust standard solution is in suitable scope, the flow flowing through the standard solution of flowmeter is enough little, the frequency of point gum machine is enough large, then the droplet size of the standard solution exported is just enough little.Like this, efficiently solve the technical matters that can not produce high precision small volume drops in prior art, achieve ensure drop volume specification unanimously and enough little, effectively improve the precision of drop reaction experiment, meet the requirement of high precision titration experiments.
2, owing to have employed infrared ray sensor, color sensor, processing unit and relay, infrared ray sensor carries out the detection of standard solution drippage number, the cumulative volume of the standard solution of consumption just can be calculated according to drippage number and each dropping liquid drop volume, and then calculate the content of determinand, simultaneously, by the color of color sensor test samples, during sample color change, the rgb value that color sensor exports also changes, processing unit receives after the rgb value signal of color sensor changes, instruction is sent to relay, the closedown of Controlling solenoid valve, stop titration experiments.Like this, efficiently solving personal monitoring in prior art can not the change of accurate measurements solution colour and the technical matters causing experimenter's labour intensity excessive, achieve the change of energy accurate measurements sample color, make experimental result more accurate, simultaneously, alleviate pressure and the workload of experimenter to a certain extent, reduce the cost of labor of experiment.
Accompanying drawing explanation
The configuration diagram of the automatic Titration system that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the schematic enlarged-scale view of coaxial diplopore parts in Fig. 1;
The workflow diagram of the automatic Titration system that Fig. 3 provides for the utility model embodiment.
(in diagram, the parts of each label representative are followed successively by: 1 flowmeter, 2 liquid storage bottles, 3 solenoid valves, 4 relays, 5 point gum machines, 6 coaxial diplopore parts, 7 infrared ray sensors, 8 color sensors, 9 magnetic stirring apparatuss, 10 processing units, 11 cylinders, 12 reduction valve, 13 liquid lines, 14 gas pipings)
Embodiment
The embodiment of the present application provides a kind of automatic Titration system, solve or partly solve the drop that can not produce high precision small size in prior art, personal monitoring can not the change of accurate measurements solution colour and the technical matters causing experimenter's labour intensity excessive, achieve ensure drop volume specification unanimously and enough little, the precision of effective raising drop reaction experiment, alleviate pressure and the workload of experimenter, reduce experiment cost of labor, and guarantee the change of accurate measurements sample color, make experimental result technique effect more accurately.
A kind of automatic Titration system that the embodiment of the present application provides, for the content of determinand in test samples, sample is arranged in sample plasma bottle, and see accompanying drawing 1, this titration system comprises: liquid storage bottle 2, coaxial diplopore parts 6, flowmeter 1, solenoid valve 3 and point gum machine 5.The inside splendid attire of liquid storage bottle 2 and the standard solution of specimen reaction.
See accompanying drawing 2, coaxial diplopore parts 6 comprise: funnelform liquid line 13 and the gas piping 14 being set in liquid line 13 small end outside; The large end of liquid line 13 is communicated with liquid storage bottle 2 by woven hose, and the small end of liquid line 13 is positioned at above the bottleneck of sample plasma bottle.When the liquid of standard solution flows to the bottom of the liquid line 13 of coaxial diplopore parts 6, the thrust of the certain frequency that point gum machine 5 pairs of drops produce will be subject at this place, this power is produced by the pressurized air of point gum machine 5, under the thrust of point gum machine 5 certain frequency, drop will depart from the whereabouts, bottom of liquid line 13 by certain frequency, the frequency rationally arranging flowmeter 1 and point gum machine 5 can obtain more consistent and that volume is enough little drop.
Flowmeter 1 is arranged on woven hose; Gone the drop volume size controlling to export through the volume of the standard solution of flowmeter 1 and the frequency of point gum machine 5 by control flow check, in suitable scope, the liquid volume flowing through flowmeter 1 is less, and the frequency of point gum machine 5 is larger, and the droplet size of output is less.Solenoid valve 3 is arranged on woven hose, between flowmeter 1 with coaxial diplopore parts 6, for flowing or the stopping of control criterion solution path, and then realizes the carrying out of experiment or stops.
Point gum machine 5 is communicated with gas piping 14 by adapter; Wherein, point gum machine 5 is interrupted and passes into gas to gas piping 14, makes the standard solution in liquid line 13 instill sample plasma bottle with setpoint frequency; After sample in sample plasma bottle and standard solution react, color changes, the infusion volume of flowmeter 1 record standard solution, and then determines the content of determinand in sample.
As preferably, point gum machine 5 is communicated with by taking over cylinder 11, and cylinder 11 is for point gum machine 5 air feed; The output terminal of cylinder 11 is communicated with liquid storage bottle 2 by adapter; Adapter between cylinder 11 and liquid storage bottle 2 is arranged reduction valve 12; Wherein, cylinder 11 passes into gas in liquid storage bottle 2, and the standard solution in gas-powered liquid storage bottle 2 flows to the liquid line 13 of coaxial diplopore parts 6, ensures that the standard solution proper flow in liquid storage bottle 2 is consistent with the standard drop of generation.
As preferably, titration system also comprises: infrared ray sensor 7, color sensor 8, processing unit 10 and relay 4.Infrared ray sensor 7 is arranged on the below of liquid line 13 bottom end outlet, for the drippage quantity of examination criteria solution; That can be detected the drop of whereabouts by infrared ray sensor 7 drips number, just can calculate the volume of altogether consumed standard solution, and then calculate the content of test substance according to known number and each known dropping liquid drop volume.
Color sensor 8 is arranged on outside sample plasma bottle, for the change of sample color in test samples bottle; Monitored the change of sample color by color sensor 8, do not need laboratory technician to stare at solution to be measured for a long time, alleviate pressure and the workload of laboratory technician to a certain extent, indirectly reduce the cost of labor of experiment.
Processing unit 10 is electrically connected with infrared ray sensor 7 and color sensor 8; As a kind of preferred embodiment, processing unit 10 is data collecting card, its principle of work is: the color of any one object is all made up of red green blue tricolor mixing, the object color of finding of naked eye is not both because this trichromatic blending ratio is different, around this principle design RGB color sensor 8, RGB and represent RGB three kinds of colors respectively.The color relation of an object represents one group of rgb value, and when color is different, the value of RGB is also just different.Change once sample color, the value of the RGB that color sensor 8 exports is also just different, the value of the RGB that data collecting card collects changes, then illustrate that the color of sample there occurs change, and then utilize data collecting card to remove Controlling solenoid valve 4 by relay, cutting system path, stops titration.
Relay 4 is electrically connected with processing unit 10 and solenoid valve 3; Opening or closing of relay 4 energy Controlling solenoid valve; Wherein, color sensor 8 sends color characteristic signal to processing unit 10; When the color of sample changes, color characteristic signal correspondence changes, after processing unit 10 receives the color characteristic signal of change, shutdown signal is sent to relay 4, solenoid valve 3 cuts out, and then making the standard solution in liquid line 13 stop drippage downwards, infrared ray sensor 7 detects the drippage quantity of this process Plays solution and produces number of drops signal, and processing unit 10 receives and stores number of drops information.
As preferably, this titration system also comprises: magnetic stirring apparatus 9, and magnetic stirring apparatus 9 comprises: base and stirrer; Sample plasma bottle is arranged on base; Stirrer is arranged in the sample of sample plasma bottle inside; Wherein, magnetic stirring apparatus 9 works, and stirrer produces rotation under magneticaction, and the sample in sample plasma bottle and standard solution be abundant hybrid reaction under the turning effort of stirrer, is conducive to shortening experimental period.
See accompanying drawing 3, introduce the principle of work of this automatic Titration system below in detail:
Standard solution flows out from liquid storage bottle 2, flows into flowmeter 1 through pipeline, and adjustment flowmeter 1 is suitable setting value, now can determine by flowmeter 1 volume that each dropping liquid drips; Standard solution flows through solenoid valve 3 through pipeline, and then flow to coaxial diplopore parts 6 through pipeline.
Under the compressed-air actuated effect of certain frequency that coaxial diplopore parts 6 produce through point gum machine 5, standard solution carries out segmentation and produces drop; Afterwards, drop can fall to and fill in the sample plasma bottle of sample, in way, whereabouts, the drippage number of the drop that infrared ray sensor 7 statistical monitoring arrives, and in the enterprising row relax analysis of data collecting card, count through the drop of standard solution drip number.
The droplets fall of standard solution is reacted with sample to sample plasma bottle, and the stirrer agitating solution simultaneously in magnetic stirring apparatus 9, makes standard solution and the abundant hybrid reaction of sample; Once reaction reaches terminal, solution colour then changes, and this color change signals is sent to data collecting card by color sensor 8, will cut off solenoid valve 3 after data collecting card processes by analysis by relay 4, stops titration.In whole experimentation, another part air pressure that cylinder 11 produces can be applied to liquid storage bottle 2 by reduction valve 12, ensures that the standard solution proper flow in liquid storage bottle 2 is consistent with the standard drop of generation.
The one or more technical schemes provided in the embodiment of the present application, at least have following technique effect or advantage:
1, the liquid line 13 owing to have employed coaxial diplopore parts 6 is communicated with liquid storage bottle 2, gas piping 14 is communicated with point gum machine 5, flowmeter 1 is set between liquid storage bottle 2 with coaxial diplopore parts 6 simultaneously, the pressure gas of certain frequency acts in the gas piping 14 of coaxial diplopore parts 6 by point gum machine 5, the standard solution drop of liquid line 13 bottom is subdivided, and frequency is larger, and the droplet size flow through is less, the degree of segmentation will be higher, and the volume of each standard solution will be less; In the process of standard solution drippage, liquid storage bottle 2 is constantly to liquid line 13 transfer criteria solution, and the flow that flowmeter 1 can adjust standard solution is in suitable scope, the flow flowing through the standard solution of flowmeter 1 is enough little, the frequency of point gum machine 5 is enough large, then the droplet size of the standard solution exported is just enough little.Like this, efficiently solve the technical matters that can not produce high precision small volume drops in prior art, achieve ensure drop volume specification unanimously and enough little, effectively improve the precision of drop reaction experiment, meet the requirement of high precision titration experiments.
2, owing to have employed infrared ray sensor 7, color sensor 8, processing unit 10 and relay 4, infrared ray sensor 7 carries out the detection of standard solution drippage number, the cumulative volume of the standard solution of consumption just can be calculated according to drippage number and each dropping liquid drop volume, and then calculate the content of determinand, simultaneously, by the color of color sensor 8 test samples, during sample color change, the rgb value that color sensor 8 exports also changes, after the rgb value signal that processing unit 10 receives color sensor 8 changes, instruction is sent to relay 4, the closedown of Controlling solenoid valve 3, stop titration experiments.Like this, efficiently solving personal monitoring in prior art can not the change of accurate measurements solution colour and the technical matters causing experimenter's labour intensity excessive, achieve the change of energy accurate measurements sample color, make experimental result more accurate, simultaneously, alleviate pressure and the workload of experimenter to a certain extent, reduce the cost of labor of experiment.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only embodiment of the present utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. an automatic Titration system, for the content of determinand in test samples, described sample is arranged in sample plasma bottle, it is characterized in that, described titration system comprises:
Liquid storage bottle, the standard solution of inner splendid attire and described specimen reaction;
Coaxial diplopore parts, comprising: funnelform liquid line and the gas piping being set in described liquid line small end outside; The large end of described liquid line is communicated with described liquid storage bottle by woven hose, and the small end of described liquid line is positioned at above the bottleneck of described sample plasma bottle;
Flowmeter, is arranged on described woven hose;
Solenoid valve, is arranged on described woven hose, between described flowmeter with described coaxial diplopore parts;
Point gum machine, is communicated with described gas piping by adapter;
Wherein, described point gum machine interruption passes into gas to described gas piping, makes the standard solution in described liquid line instill described sample plasma bottle with setpoint frequency; After sample in described sample plasma bottle and described standard solution react, color changes, the infusion volume of standard solution described in described cmf record, and then determines the content of determinand in described sample.
2. titration system as claimed in claim 1, is characterized in that,
Described point gum machine is communicated with by taking over cylinder, and described cylinder is used for described point gum machine air feed;
The output terminal of described cylinder is communicated with described liquid storage bottle by adapter;
Described adapter between described cylinder and liquid storage bottle arranges reduction valve;
Wherein, described cylinder passes into gas in described liquid storage bottle, and the standard solution in liquid storage bottle described in described gas-powered flows to the liquid line of described coaxial diplopore parts.
3. titration system as claimed in claim 1, it is characterized in that, described titration system also comprises:
Infrared ray sensor, is arranged on the below of described liquid line bottom end outlet, for detecting the drippage quantity of described standard solution;
Color sensor, is arranged on outside described sample plasma bottle, for detecting the change of sample color in described sample plasma bottle;
Processing unit, is electrically connected with described infrared ray sensor and color sensor;
Relay, is electrically connected with described processing unit and described solenoid valve; Described relay can control opening or closing of described solenoid valve;
Wherein, described color sensor sends color characteristic signal to described processing unit; When the color of described sample changes, described color characteristic signal correspondence changes, after described processing unit receives the described color characteristic signal of change, shutdown signal is sent to described relay, make described closed electromagnetic valve, and then making the standard solution in described liquid line stop drippage downwards, described infrared ray sensor detects the drippage quantity of standard solution described in this process and produces number of drops signal, and described processing unit receives and stores described number of drops signal.
4. titration system as claimed in claim 3, is characterized in that,
Described processing unit is data collecting card.
5. titration system as claimed in claim 1, it is characterized in that, described titration system also comprises:
Magnetic stirring apparatus, comprising: base and stirrer;
Described sample plasma bottle is arranged on described base; Described stirrer is arranged in the sample of described sample plasma bottle inside;
Wherein, described magnetic stirring apparatus work, described stirrer produces rotation under magneticaction, and the sample in described sample plasma bottle and described standard solution be abundant hybrid reaction under the turning effort of described stirrer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520561252.1U CN204882489U (en) | 2015-07-29 | 2015-07-29 | Automatic titration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520561252.1U CN204882489U (en) | 2015-07-29 | 2015-07-29 | Automatic titration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204882489U true CN204882489U (en) | 2015-12-16 |
Family
ID=54826849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520561252.1U Expired - Fee Related CN204882489U (en) | 2015-07-29 | 2015-07-29 | Automatic titration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204882489U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI675199B (en) * | 2018-11-06 | 2019-10-21 | 中華精測科技股份有限公司 | Rgb three primary color automatic titrator and method for measuring concentration of analyte of solution thereby |
-
2015
- 2015-07-29 CN CN201520561252.1U patent/CN204882489U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI675199B (en) * | 2018-11-06 | 2019-10-21 | 中華精測科技股份有限公司 | Rgb three primary color automatic titrator and method for measuring concentration of analyte of solution thereby |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105021767A (en) | Automatic titrating system | |
| CN101542263A (en) | Device for automatically adjusting the bacterial inoculum level of a sample | |
| EP2270129B1 (en) | Bioreactor systems and associated methods of processing bioreactor vessels | |
| EP2880148B1 (en) | Bioreactor vessels and associated bioreactor systems | |
| CN105126696A (en) | Automatic color matching machine and color matching process thereof | |
| CN103364523B (en) | Volatile acid on-line monitoring system | |
| CN204882489U (en) | Automatic titration system | |
| CN108519491A (en) | Full-automatic fatty acid value detecting system and detection method | |
| CN208420711U (en) | A kind of improved laboratory COD automatically analyzes robot | |
| CN101373377A (en) | Data acquisition system for Chinese medicine production equipment and working method thereof | |
| CN206625025U (en) | One kind washing bleaching machine auto feed feed supplementing device | |
| CN206109395U (en) | Microgram inoculating device | |
| CN109060692A (en) | Active phosphorus automatic analyzer and its measuring method based on syringe pump | |
| CN205182640U (en) | Take dosing unit of function of disinfecting | |
| CN202494671U (en) | Device for automatically judging titration end point of raw material for TFT-LCD (Thin Film Transistor-Liquid Crystal Display) glass | |
| CN208156019U (en) | Full-automatic fatty acid value detection system | |
| CN208825006U (en) | A kind of intelligence divides sample instruction device | |
| CN208217052U (en) | A kind of Chinese medicine is by ball weight detecting system | |
| CN205721182U (en) | A kind of intelligent controlling device of paint stirring machine | |
| CN207164599U (en) | Liquor strength managing and control system | |
| CN112666160A (en) | Multi-element on-line titration method and device | |
| CN205007933U (en) | Automatic unloading system of machine of matching colors | |
| KR20170091898A (en) | Multi dispenser for automated hematology analyzer and method thereof | |
| CN115684465A (en) | Full-automatic sulfur dioxide analysis and determination instrument | |
| CN104604410A (en) | Device and method for measuring dot fertilizer injection accuracy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |