CN2677917Y - Quick investigating instrument for pecticide residual amount - Google Patents
Quick investigating instrument for pecticide residual amount Download PDFInfo
- Publication number
- CN2677917Y CN2677917Y CN 200420010265 CN200420010265U CN2677917Y CN 2677917 Y CN2677917 Y CN 2677917Y CN 200420010265 CN200420010265 CN 200420010265 CN 200420010265 U CN200420010265 U CN 200420010265U CN 2677917 Y CN2677917 Y CN 2677917Y
- Authority
- CN
- China
- Prior art keywords
- temperature
- pins
- chip microcomputer
- circuit
- light source
- 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
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a quick investigating instrument for pesticide residual amount, which is provided with the functions of pre-reaction cultivation, and physiological and biochemical color comparison and quickly investigating harmful ingredients such as pesticide residue, heavy metals, and nitrite which are existing in foods; a constant temperature pre-reaction heating device realizes the temperature control and the time control automatically and precisely; a plurality of light channels are arranged to investigate simultaneously a plurality of test samples; the microcomputer monitoring circuits realize intelligent sample cultivation, sample testing, sample printing, sample output and human-computer interaction. The utility model can be widely used for companies or departments such as vegetable wholesale markets, production bases, business administration, environmental protection, hygiene and disease control and hotels restaurants to monitor the content of the harmful substances in fruits and vegetables, and can also be used to establish the monitoring system of the central pesticide monitoring stations, the pesticide monitoring substations, and all levels of the pesticide residue stations.
Description
(1) technical field
The utility model relates to the residual quick analyzer of a kind of novel agrochemical, especially can the residual pesticide residue rapid detector that can measure heavy metal in the food, content of nitrite and have the pre-reaction function again of the multiple medicine of fast measuring.
(2) background technology
The food-safety problem of China can not be ignored: rose year by year because of pathogenic microorganisms pollutes the food source property poisoning that causes in recent years, the problem that exceeds standard of the residues of pesticides in vegetables, grain, the meat product still exists.With regard to by the detection technique means, the conventional sense method complexity of extensively being approved, will be according to the expensive large-sized analytic instrument of not coexisting of pesticide variety or other objectionable constituent (as chromatograph, homemade is many more than 20,000 yuan, import all more than 100,000 yuan, add support equipment, very worthy especially) the carrying out of one of the next item up, though quantitation capabilities is high, screening capacity and testing efficiency are not high, do not satisfy the needs of field quick detection; And conventionally test cost costliness (agents useful for same is very expensive, and each individual event test data is charged at least one hundred yuan, hundreds of unit, even thousands of unit at most) can't be promoted the use of widely in basic unit.Therefore, except routine inspection, also need a rapid integrated detection technique and match with it, Here it is fast survey technology, be characterized in: detection speed is fast, and is with low cost, can comprehensively judge the toxicity of objectionable constituent, simple to operate, is easy to promote the wider application.
The Fast Detection Technique of residues of pesticides (mainly being organophosphorus and carbamates) has been formulated industry standard and national standard, and the Fast Determination of Pesticide Residue product can be divided into quick measuring card and tacheometer two big classes substantially:
(1) quick measuring card series products: from detecting on the principle, remain and adopt enzyme inhibition method to monitor, characteristics are to use conveniently, low operation cost (about 1.4 yuan/sample), and the tablet card is more easily preserved, carried.But such product inspection method is extensive, confidence level is lower, detection information can not be carried out data analysis, can't be set up trend prediction, therefore adopt this method of inspection, not only can not guarantee the safety non-toxic evil of food veritably, can not be as the information source of early warning system, only as the auxiliary reference of food security.
(2) tacheometer series products: adopt enzyme to suppress method or enzyme inhibition rate method or absorbance method more, testing cost also lower (about 1.2～1.4 yuan/sample), the instrument price is high slightly, precision and reappearance all are better than quick measuring card greatly.But existing this quasi-instrument has following weak point more:
1. have only biochemical colorimetric functions, can only detect organic phosphates and carbamate pesticide residue, do not have the physics and chemistry colorimetric functions can't detect objectionable impurities such as nitrite, heavy metal in the agricultural product, function singleness very is not fit to basic unit and uses.
2. instrument plug-in and operating parameter are fixed, and can only be applicable to a certain method of testing or standard, present domestic residues of pesticides method of testing disunity, and existing national standard also waits to improve the needs that fixing program and parameter can not adapt to the user because of improving inadequately.
3. have only test function, shortage pre-reaction (constant temperature culture) function and pre-reaction condition setting, control function, tester can not work alone.Can not break away from the laboratory support equipment.
So a kind of easy and simple to handle, testing cost is cheap, test speed is quick, test event is complete, have that function is cultivated in pre-reaction and the high agricultural chemicals fast detecting instrument of measuring accuracy is that people are long-awaited for many years.
(3) utility model content
The purpose of this utility model provide a kind of good portability, easy and simple to handle, testing cost is cheap, test speed is quick, test event is more complete and have pre-reaction cultivates function and the high agricultural chemicals fast detecting instrument of measuring accuracy, the utility model has complete test guarantee condition, cultivates measurement sensitivity and the accuracy that function can increase substantially instrument as its pre-reaction; This is novel also to have characteristics such as test channel is many, testing efficiency height.
The technical scheme that its technical matters that solves the utility model adopts is:
1. on instrument, dispose constant temperature pre-reaction heating arrangement, this device is formed by connecting by heater, heat balance sheet, temperature sensor and sea water bath, the heat balance sheet is connected the bottom of sea water bath, heater links to each other with the heat balance sheet again, temperature sensor places in the sea water bath, has every comb in the sea water bath.
2. adopt hyperchannel light path system, light path system has many group monochromatic sources, monochromatic source adopts the monochromaticity light emitting diode or by the combination of Halogen lamp LED or incandescent lamp and optical filter, each group light source has independently path channels and photoelectric signal converter, and cell is all arranged in each path channels.
3. micro computer telemetry circuit of the present utility model is made up of single-chip microcomputer, simulating signal metering circuit, light source and temperature-control circuit, power circuit.Single-chip microcomputer adopts PIC or MCS51 series, finishes functions such as measurement, control, storage, demonstration, printing, and No. 1 pin of single-chip microcomputer is connected to microcontroller power supply through R401, and the electrification reset of single-chip microcomputer is provided; No. 2 of single-chip microcomputer, No. 4 of No. 3 pin connection mode number converter U202, No. 3 pins, be used for the control of U202 and reading of measurement result, No. 4 pins of single-chip microcomputer provide light source control signal, No. 5 of single-chip microcomputer, No. 6, No. 7 pin connects eeprom memory U402, realize the storage of data, No. 13 of single-chip microcomputer, No. 14 pin connects crystal oscillator, clock signal is provided, No. 16 pins of single-chip microcomputer provide temperature control signals, No. 25 of single-chip microcomputer, No. 26 pin connects mini-printer, output measurement result, all the other pins realize the connection of graphic dot matrix LCD and being connected of keyboard and state demonstration; The simulating signal metering circuit comprises photosignal measurement and temperature survey two parts, adopt accurate, low noise operational amplifier U501 finishes the voltage transitions to the photocurrent of photodiode or Halogen lamp LED generation, its plus earth, negative pole connects No. 2 pins (reverse input end) of U501, No. 2 pins (reverse input end) of U501 and the indirect capacitance-resistance filter network in parallel of No. 6 pins (output terminal), No. 6 pins (output terminal) are through No. 1 pin of capacitance-resistance filter network access channel analog switch U201, the photosignal measurement has 6 groups, measure 6 passages respectively, insert U201 respectively No. 1, No. 15, No. 2, No. 14, No. 5, No. 12 pins, temperature measuring circuit uses platinum resistance temperature sensor, adopt the bridge-type metering circuit, use dual power supply, precision operational-amplifier OPA2277, platinum resistance is parallel to reverse input end and the output terminal of U204, realize the measurement and the linearity correction of temperature, this temperature signal passes through No. 4 pins that amplification and capacitance-resistance filter insert U201 again, 6 road photosignals and 1 road temperature signal are through the tunnels analogy switch, insert analog to digital converter U202 respectively, measurement result reads U202 by single-chip microcomputer through iic bus, carries out relevant treatment again; Light source and temperature-control circuit comprise light source and control circuit and temperature-control circuit, temperature-control circuit adopts the switching on and off of power supply of relay K 401 control heaters to control the interior temperature of constant temperature pre-reaction heating arrangement, K401 is driven through Q401 by No. 16 pins of single-chip microcomputer, the constant-current source circuit realization that circuit of light sources is formed by light emitting diode D601 or Halogen lamp LED and by U601, R601 receives the base stage of Q601 and No. 1 pin of U601, for it provides biasing, the emitter of Q601 is received No. 8 pins of U601, connect No. 6 pins of R602 again to U601, constitute a feedback control loop, make the current constant that flows through R602, light emitting diode D601 or Halogen lamp LED are connected between the collector of power supply and Q601 as load, Q602 provides the protection of reverse voltage for Q601, difference according to test event, switch different light sources by control circuit for light source, realize the conversion of wavelength, Q403, Q404 and Q405, Q406 is two groups of on-off circuits, switching on and off of control light source power, Q407 is a reverser, realize the driving of light source control signal (No. 4 pins of single-chip microcomputer), make the two states (high level of light source control signal, low level) corresponding two kinds of light sources is luminous; Power circuit adopts the secondary two-winding transformer of R type, two 9V alternating voltages are provided, through full-wave rectification bridge rectification, filtering generation ± 10V DC voltage, U101, U102 voltage stabilizing generation ± 5V DC voltage are given the simulating signal loop power supply, the U105 voltage stabilizing produces DC voltage, give the temperature survey loop power supply, U104 voltage stabilizing generation+8V DC voltage is given the light source loop power supply, U103 voltage stabilizing generation+5V DC voltage is powered to single-chip microcomputer.
The utlity model has actively useful effect:
1. having disposed constant temperature pre-reaction device, realized accurate intelligent temperature control, timing, increased substantially measurement sensitivity, accuracy and the portability of instrument, is domestic only pesticide residue rapid detector with pre-reaction function.
2. be provided with a plurality of path channels, can measure a plurality of samples simultaneously, improved testing efficiency greatly.
3. having physiology, biochemical two kinds of colorimetric functions, can measure objectionable constituent in the food such as residues of pesticides, heavy metal and nitrite, is one of more full fast measuring instrument of present domestic test event.
4. have the user platform that can be provided with flexibly, stronger exaptation is arranged, can adapt to different testing standards and test specification.
(4) description of drawings
Fig. 1 is a kind of vertical view of residues of pesticides fast measuring instrument;
Fig. 2 is a kind of transverse sectional view of residues of pesticides fast measuring instrument;
Fig. 3 is a kind of rear view of residues of pesticides fast measuring instrument;
Fig. 4 is a kind of longitudinal sectional view of residues of pesticides fast measuring instrument;
Fig. 5 be a kind of residues of pesticides fast measuring instrument get longitudinal sectional view along the constant temperature culture device;
Fig. 6 is a kind of single chip circuit schematic diagram of residues of pesticides fast measuring instrument;
Fig. 7 is a kind of simulating signal metering circuit schematic diagram of residues of pesticides fast measuring instrument;
Fig. 8 is a kind of light source and temperature-control circuit schematic diagram of residues of pesticides fast measuring instrument;
Fig. 9 is a kind of power circuit principle figure of residues of pesticides fast measuring instrument.
1 is temperature sensor in this instance graph, the 2nd, and sea water bath is every comb, and the 3rd, sea water bath, the 4th, cell, the 5th, darkroom, the 6th, display, the 7th, pilot lamp, the 8th, supervisory keyboard, the 9th, housing, 10 heaters, the 11st, heat balance sheet, the 12nd, transformer, the 13rd, light emitting diode, the 14th, switch, the 15th, Insurance Block, the 16th, power interface, the 17th, communication port, 18 circuit boards.
(5) embodiment
Constant temperature pre-reaction heating arrangement is formed by connecting by PTC heater 10, heat balance sheet 11, temperature sensor 1 and sea water bath 3 in this example, heat balance sheet 11 closely is connected the bottom of sea water bath 3, PTC heater 10 links to each other with heat balance sheet 11 again, temperature sensor 1 is positioned over 3 (see figure 2)s in the sea water bath, have in the sea water bath every combing 2, be used to place culture sample.
The light source of light path system is that 12 monochromaticity light emitting diodes of 440 nanometers and 505 nanometers are formed by wavelength in this example, and each light emitting diode has independently path channels and photoelectric signal converter, is equipped with cell in each path channels.
Micro computer telemetry circuit in this example is made up of single-chip microcomputer, simulating signal metering circuit, light source and temperature-control circuit, power circuit.Single-chip microcomputer adopts PIC18F452, can realize functions such as measurement, control, storage, demonstration, printing with it.Single chip circuit adopts 4 key boards to realize man-machine interaction with LCD, adopt Chinese display operation step and operation indicating, functions such as the measurement of user's operation keyboard realization residues of pesticides, heavy metal, nitrite and the setting of parameter, instrumental calibration, diagnosis.No. 1 pin of PIC18F452 is connected to microcontroller power supply through R401, and the electrification reset of single-chip microcomputer is provided; No. 2 of PIC18F452, No. 4 of No. 3 pin connection mode number converter U202, No. 3 pins, be used for the control of U202 and reading of measurement result, No. 4 pins of PIC18F452 provide light source control signal, No. 5, No. 6, No. 7 pin connects eeprom memory U402, realize the storage of data, No. 13 of PIC18F452, No. 14 pin connects crystal oscillator, clock signal is provided, No. 16 pin provides temperature control signals, No. 25, No. 26 pin connects mini-printer, with set form output measurement result, all the other pins are realized the connection of graphic dot matrix LCD and being connected of keyboard and state demonstration; The simulating signal metering circuit comprises photosignal measurement and temperature survey two parts, adopt accurate, low noise operational amplifier TLC2654 (U501) finishes the voltage transitions of the photocurrent that the D501 photodiode is produced, D501 plus earth, negative pole connects No. 2 pins (reverse input end) of U501, No. 2 pins (reverse input end) of U501 and the indirect capacitance-resistance filter network in parallel of No. 6 pins (output terminal), No. 6 pins (output terminal) are through No. 1 pin of capacitance-resistance filter network insertion 8 tunnels analogy switch U201 (MAX4051), the photosignal measurement has 6 groups, measure 6 passages respectively, insert U201 respectively No. 1, No. 15, No. 2, No. 14, No. 5, No. 12 pins, temperature measuring circuit uses the platinum resistance temperature sensor of calibration PT1000, adopt the bridge-type metering circuit, use dual power supply, precision operational-amplifier OPA2277, platinum resistance is parallel to reverse input end and the output terminal of U204, realize the measurement and the linearity correction of temperature, this temperature signal is again through 6.35 times amplification and No. 4 pins of capacitance-resistance filter access U201,6 road photosignals and 1 road temperature signal are through 8 tunnels analogy switches, insert analog to digital converter U202 (ADS1100) respectively, measurement result reads U202 by single-chip microcomputer through iic bus, carries out relevant treatment again; Light source and temperature-control circuit comprise light source and control circuit and temperature-control circuit, temperature-control circuit adopt relay K 401 control PTC heaters power supply switch on and off the temperature of controlling culturing room, K401 is driven through Q401 by No. 16 pins of single-chip microcomputer, circuit of light sources is realized by light emitting diode D601 and by the constant-current source circuit that U601 (TL431) forms, R601 receives the base stage of Q601 and No. 1 pin of U601, for it provides biasing, the emitter of Q601 is received No. 8 pins of U601, connect No. 6 pins of R602 again to U601, constitute a feedback control loop, make the current constant that flows through R602, light emitting diode D601 is connected between the collector of power supply and Q601 as load, Q602 provides the protection of reverse voltage for Q601, adopt two kinds of light sources (440 nanometers and 505 nanometers) to satisfy residues of pesticides, the measurement requirement of heavy metal and nitrite, realize the switching of light source by control circuit for light source, Q403, Q404 and Q405, Q406 is two groups of on-off circuits, switching on and off of control light source power, Q407 is a reverser, realize the driving of light source control signal (No. 4 pins of single-chip microcomputer), make the two states (high level of light source control signal, low level) corresponding two kinds of light sources is luminous; Power circuit adopts the secondary two-winding transformer of R type, two 9V alternating voltages are provided, through full-wave rectification bridge rectification, filtering generation ± 10V DC voltage, U101, U102 voltage stabilizing generation ± 5V DC voltage are given the simulating signal loop power supply, U105 voltage stabilizing generation+2.048V DC voltage, give the temperature survey loop power supply, U104 voltage stabilizing generation+8V DC voltage is given the light source loop power supply, U103 voltage stabilizing generation+5V DC voltage is powered to single-chip microcomputer.
Claims (4)
1. residues of pesticides fast measuring instrument, be made up of constant temperature pre-reaction heating arrangement, light path system, micro computer telemetry circuit, display, supervisory keyboard and shell, it is characterized in that: constant temperature pre-reaction heating arrangement is made of heater, heat balance sheet, temperature sensor and sea water bath; Light path system is made up of light-source system and path channels system; The micro computer telemetry circuit is made up of single-chip microcomputer, simulating signal metering circuit, light source and temperature-control circuit, power circuit.
2. according to the described residues of pesticides tester of claim 1, it is characterized in that: constant temperature pre-reaction heating arrangement is formed by connecting by heater, heat balance sheet, temperature sensor and sea water bath, the heat balance sheet is connected between sea water bath and the heater, temperature sensor places in the sea water bath device, has every comb in the sea water bath.
3. according to the described residues of pesticides tester of claim 1, it is characterized in that: light path system has many group monochromatic sources, monochromatic source adopts the monochromaticity light emitting diode or by the combination of Halogen lamp LED or incandescent lamp and optical filter, each group light source has independently path channels and photoelectric signal converter, and cell is all arranged in each path channels.
4. according to the described residues of pesticides tester of claim 1, it is characterized in that: the micro computer telemetry circuit is made up of single-chip microcomputer, simulating signal metering circuit, light source and temperature-control circuit, power circuit.Single-chip microcomputer adopts PIC or MCS51 series, finishes functions such as measurement, control, storage, demonstration, printing, and No. 1 pin of single-chip microcomputer is connected to microcontroller power supply through R401, and the electrification reset of single-chip microcomputer is provided; No. 2 of single-chip microcomputer, No. 4 of No. 3 pin connection mode number converter U202, No. 3 pins, be used for the control of U202 and reading of measurement result, No. 4 pins of single-chip microcomputer provide light source control signal, No. 5 of single-chip microcomputer, No. 6, No. 7 pin connects eeprom memory U402, realize the storage of data, No. 13 of single-chip microcomputer, No. 14 pin connects crystal oscillator, clock signal is provided, No. 16 pins of single-chip microcomputer provide temperature control signals, No. 25 of single-chip microcomputer, No. 26 pin connects mini-printer, output measurement result, all the other pins realize the connection of graphic dot matrix LCD and being connected of keyboard and state demonstration; The simulating signal metering circuit comprises photosignal measurement and temperature survey two parts, adopt accurate, low noise operational amplifier U501 finishes the voltage transitions to the photocurrent of photodiode or Halogen lamp LED generation, its plus earth, negative pole connects No. 2 pins (reverse input end) of U501, No. 2 pins (reverse input end) of U501 and the indirect capacitance-resistance filter network in parallel of No. 6 pins (output terminal), No. 6 pins (output terminal) are through No. 1 pin of capacitance-resistance filter network access channel analog switch U201, the photosignal measurement has 6 groups, measure 6 passages respectively, insert U201 respectively No. 1, No. 15, No. 2, No. 14, No. 5, No. 12 pins, temperature measuring circuit uses platinum resistance temperature sensor, adopt the bridge-type metering circuit, use dual power supply, precision operational-amplifier OPA2277, platinum resistance is parallel to reverse input end and the output terminal of U204, realize the measurement and the linearity correction of temperature, this temperature signal passes through No. 4 pins that amplification and capacitance-resistance filter insert U201 again, 6 road photosignals and 1 road temperature signal are through the tunnels analogy switch, insert analog to digital converter U202 respectively, measurement result reads U202 by single-chip microcomputer through iic bus, carries out relevant treatment again; Light source and temperature-control circuit comprise light source and control circuit and temperature-control circuit, temperature-control circuit adopts the switching on and off of power supply of relay K 401 control heaters to control the interior temperature of constant temperature pre-reaction heating arrangement, K401 is driven through Q401 by No. 16 pins of single-chip microcomputer, the constant-current source circuit realization that circuit of light sources is formed by light emitting diode D601 or Halogen lamp LED or incandescent lamp and by U601, R601 receives the base stage of Q601 and No. 1 pin of U601, for it provides biasing, the emitter of Q601 is received No. 8 pins of U601, connect No. 6 pins of R602 again to U601, constitute a feedback control loop, make the current constant that flows through R602, light source device is connected between the collector of power supply and Q601 as load, Q602 provides the protection of reverse voltage for Q601, difference according to test event, switch different light sources by control circuit for light source, realize the conversion of wavelength, Q403, Q404 and Q405, Q406 is two groups of on-off circuits, switching on and off of control light source power, Q407 is a reverser, realize the driving of light source control signal (No. 4 pins of single-chip microcomputer), make the two states (high level of light source control signal, low level) corresponding two kinds of light sources is luminous; Power circuit adopts the secondary two-winding transformer of R type, two 9V alternating voltages are provided, through full-wave rectification bridge rectification, filtering generation ± 10V DC voltage, U101, U102 voltage stabilizing generation ± 5V DC voltage are given the simulating signal loop power supply, the U105 voltage stabilizing produces DC voltage, give the temperature survey loop power supply, U104 voltage stabilizing generation+8V DC voltage is given the light source loop power supply, U103 voltage stabilizing generation+5V DC voltage is powered to single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010265 CN2677917Y (en) | 2004-02-27 | 2004-02-27 | Quick investigating instrument for pecticide residual amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010265 CN2677917Y (en) | 2004-02-27 | 2004-02-27 | Quick investigating instrument for pecticide residual amount |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2677917Y true CN2677917Y (en) | 2005-02-09 |
Family
ID=34582845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420010265 Expired - Fee Related CN2677917Y (en) | 2004-02-27 | 2004-02-27 | Quick investigating instrument for pecticide residual amount |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2677917Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598599B (en) * | 2009-07-20 | 2011-06-22 | 中国检验检疫科学研究院 | Multi-channel portable colloidal gold test paper strip quick test device |
| CN103267789A (en) * | 2013-05-08 | 2013-08-28 | 江苏大学 | Apparatus and method for detecting organic phosphorus pesticide |
| CN105181681A (en) * | 2013-09-03 | 2015-12-23 | 驷丞生物科技股份有限公司 | Pesticide detection device |
-
2004
- 2004-02-27 CN CN 200420010265 patent/CN2677917Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598599B (en) * | 2009-07-20 | 2011-06-22 | 中国检验检疫科学研究院 | Multi-channel portable colloidal gold test paper strip quick test device |
| CN103267789A (en) * | 2013-05-08 | 2013-08-28 | 江苏大学 | Apparatus and method for detecting organic phosphorus pesticide |
| CN103267789B (en) * | 2013-05-08 | 2015-03-04 | 江苏大学 | Apparatus and method for detecting organic phosphorus pesticide |
| CN105181681A (en) * | 2013-09-03 | 2015-12-23 | 驷丞生物科技股份有限公司 | Pesticide detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2795848Y (en) | Integrated pesticide residue detector for vegetable and fruit | |
| CN103529114B (en) | A kind of household garden stuff pesticide residue fast detector | |
| Turemis et al. | Optical biosensor based on the microalga-paramecium symbiosis for improved marine monitoring | |
| CN201421450Y (en) | Food inspection equipment | |
| CN202693478U (en) | Quick detecting equipment for quality parameters of domestic drinking water | |
| CN106047678A (en) | Cell activity detection method and device based on impedance spectroscopy | |
| CN102033136A (en) | Analysis apparatus and an information displaying method | |
| CN101832913A (en) | Integrated, extensible and fast food security detection method and matched equipment thereof | |
| CN2677917Y (en) | Quick investigating instrument for pecticide residual amount | |
| CN103712978A (en) | Simple portable pesticide residue detector | |
| CN207423795U (en) | Highly effective pesticide remains tacheometer | |
| CN201788153U (en) | Pesticide residue detector integrated with micro electronic balance | |
| CN204154651U (en) | Pesticide detection device | |
| CN205786335U (en) | Portable food detector | |
| CN208383717U (en) | Food-safety detecting instrument | |
| CN103940868B (en) | A kind of rapid detector for pesticide residue based on enzyme immunosensor | |
| RU93990U1 (en) | DEVICE FOR MULTISUBSTRATE FLUORESCENT IDENTIFICATION OF BIOLOGICAL MICRO-OBJECTS AND THEIR BIOLOGICAL PROPERTIES | |
| CN202256163U (en) | Portable pesticide residual toxicity photoelectric fast detector | |
| CN2627500Y (en) | Pesticide residue tachymeter | |
| CN2731441Y (en) | Multi-channel hand-held food securing detector | |
| CN104483352A (en) | Rapid detection system for pesticide residues of fruits and vegetables and application of rapid detection system | |
| CN102426167A (en) | Photoelectric conversion based rapid detection method for pesticide residual toxicity | |
| CN106367332A (en) | ATP fluorescent food detector | |
| CN201141831Y (en) | CL-B III eight-passage relict pesticide measuring instrument | |
| Hunt et al. | An automated multiplexed turbidometric and data collection system for measuring growth kinetics of anaerobes dependent on gaseous substrates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |