CN108072653A - A kind of total hardness detecting system and its application method for being used to detect that total hardness is 0-560mg/L - Google Patents
A kind of total hardness detecting system and its application method for being used to detect that total hardness is 0-560mg/L Download PDFInfo
- Publication number
- CN108072653A CN108072653A CN201611066163.5A CN201611066163A CN108072653A CN 108072653 A CN108072653 A CN 108072653A CN 201611066163 A CN201611066163 A CN 201611066163A CN 108072653 A CN108072653 A CN 108072653A
- Authority
- CN
- China
- Prior art keywords
- total hardness
- test paper
- detecting system
- detecting
- hardness
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a kind of for detecting the total hardness detecting system and its application method that total hardness is 0 560mg/L, total hardness detecting system is made of test paper for determining total hardness and colorimetric card；Test paper for determining total hardness is prepared according to the following steps：Step A, chromophoric solution is prepared, chromophoric solution is formulated by the phosphate buffer of eriochrome black T, alizarin, polyvinylpyrrolidone and pH=10, eriochrome black T:Alizarin:Polyvinylpyrrolidone:Phosphate buffer=0.02~0.03g:0.002~0.003g:0.005~0.015g:90~110mL；Step B, test paper is immersed in chromophoric solution；Step C, the test paper after dry immersion；Colorimetric card is prepared according to the following steps：Step a, the standard solution of different total hardness concentration is added dropwise on several test paper for determining total hardness；Step b, treat that 9 11min develop the color, according to the test paper for determining total hardness of colour developing, make standard color block；Step c, by the corresponding total hardness concentration of standard color block, it is arranged in order standard color block.Preferably, developing time 10min.Present invention colour developing is apparent, and detection is accurate.
Description
Technical field
The invention belongs to detection field more particularly to a kind of total hardness detections for being used to detect that total hardness is 0-560mg/L
System and its application method.
Background technology
The total hardness of water refers to the total concentration of calcium and magnesium ion in water, including carbonate hardness and non-carbonate hardness, wherein carbon
Hydrochlorate hardness refers to i.e. by heating the calcium and magnesium ion that can be precipitated with carbonate form, therefore is called temporary hardness, noncarbonate
Hardness refers to the part calcium and magnesium ion that cannot be precipitated after heating, also known as permanent hardness.
The main traditional disodium ethylene diamine tetraacetate titration of the detection method of total hardness uses hardness analyzer or test paper
Detection.Wherein, traditional disodium ethylene diamine tetraacetate titration has many advantages, such as that detection is accurate, but process is cumbersome, and detects
Place is limited.Hardness analyzer can also accurately detect total hardness, but its is expensive, and be not easy portable.Test paper detection from
Place limits, and test paper is convenient for carrying, and operating personnel can detect sample with place at any time, and easy to operate quick.But
It is that presently commercially available for detecting the test paper of total hardness, detection range is limited, when the sample for being more than 360mg/L to total hardness concentration
When being detected, colour development difference unobvious can not compare out corresponding color and concentration or can not contrast exactly corresponding
Color and concentration, i.e., cannot draw testing result.Meanwhile also there is the shortcomings of colour developing is uneven in commercially available test paper.As shown in Figure 1,
It using total hardness concentration is 0 that Fig. 1, which is, 100,360, the MgCl of 560mg/L2Standard solution is added dropwise respectively in four commercially available test paper
Test paper color development figure, when total hardness concentration is more than 360mg/L, commercially available test paper is almost without colour development difference, and 100mg/L and 360mg/
The colour developing of L is uneven.
The content of the invention
The present invention provides a kind of application method for being used to detect the total hardness detecting system that total hardness is 0-560mg/L, with
The defects of overcoming the prior art.
To achieve the above object, the present invention provides a kind of total hardness detection for being used to detect that total hardness is 0-560mg/L
System is made of test paper for determining total hardness and colorimetric card；Test paper for determining total hardness is prepared according to the following steps：Step A, it is molten to prepare colour developing
Liquid, chromophoric solution are formulated by the phosphate buffer of eriochrome black T, alizarin, polyvinylpyrrolidone and pH=10, eriochrome black T:It is alizarin
Element:Polyvinylpyrrolidone:Phosphate buffer=0.02~0.03g:0.002~0.003g:0.005~0.015g:90~
110mL；Step B, test paper is immersed in chromophoric solution；Step C, the test paper after dry immersion, obtains test paper for determining total hardness；Colorimetric
Card is prepared according to the following steps：Step a, on several test paper for determining total hardness, the standard of different total hardness concentration is added dropwise respectively
Solution；Step b, treat that 9-11min develops the color, according to the test paper for determining total hardness of colour developing, make standard color block；Step c, by standard color block phase
Corresponding total hardness concentration is arranged in order standard color block, obtains colorimetric card.Preferably, developing time 10min.
Wherein, in step b, the test paper for determining total hardness of colour developing is scanned using colorimetric instrument, the test paper for determining total hardness to be developed the color
Tristimulus values make standard color block according to tristimulus values.
Further, the present invention provides a kind of for detecting the total hardness detecting system that total hardness is 0-560mg/L, may be used also
To have the feature that：Wherein, in step A, eriochrome black T:Alizarin:Polyvinylpyrrolidone:Phosphate buffer=0.025g:
0.0025g:0.01g:100mL。
Further, the present invention provides a kind of for detecting the total hardness detecting system that total hardness is 0-560mg/L, may be used also
To have the feature that：Wherein, in step B, test paper impregnates 30-35s in chromophoric solution.Preferably, soaking time is
30s。
Further, the present invention provides a kind of for detecting the total hardness detecting system that total hardness is 0-560mg/L, may be used also
To have the feature that：Wherein, in step C, test paper dries 10-40min in 25-60 DEG C.
Further, the present invention provides a kind of for detecting the total hardness detecting system that total hardness is 0-560mg/L, may be used also
To have the feature that：Wherein, in step C, test paper dries 10min in 60 DEG C.
Further, the present invention provides a kind of for detecting the total hardness detecting system that total hardness is 0-560mg/L, may be used also
To have the feature that：Wherein, test paper is blotting paper.Preferably, the model H-4 of blotting paper.
Further, the present invention provides a kind of for detecting the total hardness detecting system that total hardness is 0-560mg/L, may be used also
To have the feature that：Wherein, in step A, the process for preparation of chromophoric solution is：The phosphate buffer of pH=10 is prepared, is pressed
Ratio weighs eriochrome black T and alizarin is dissolved in phosphate buffer, and by phosphate buffer constant volume, then be proportionally added into poly- second in proportion
Alkene pyrrolidone.
Further, the present invention provides a kind of for detecting the total hardness detecting system that total hardness is 0-560mg/L, may be used also
To have the feature that：Wherein, in step a, the total hardness scope of standard solution is 0-560mg/L.Preferably, it is total at four
On hardness test paper, be added dropwise respectively total hardness concentration for 0,100,360, the standard solution of 560mg/L.
Further, the present invention provides a kind of for detecting the total hardness detecting system that total hardness is 0-560mg/L, may be used also
To have the feature that：Wherein, in step a, standard solution MgCl2Solution.
The present invention also provides a kind of for detecting the user for the total hardness detecting system that total hardness is 0-560mg/L
Sample to be tested is added dropwise on test paper for determining total hardness method, after 9-11min colour developings, observes the colour developing color of test paper for determining total hardness, and with
The standard color block of colorimetric card compares, obtain with standard color block similar in the colour developing color of test paper for determining total hardness, read standard color block
Respective concentration is the total hardness of sample.Preferably, developing time 10min.
The advantageous effect of this patent is：The present invention provides a kind of total hardness for being used to detect that total hardness is 0-560mg/L
Detecting system and its application method, total hardness system are made of test paper for determining total hardness and colorimetric card, and test paper for determining total hardness is through chromophoric solution
It impregnates, dry be prepared again, wherein, chromophoric solution is delayed by the phosphoric acid of eriochrome black T, alizarin, polyvinylpyrrolidone and pH=10
Fliud flushing is formulated, eriochrome black T:Alizarin:Polyvinylpyrrolidone:Phosphate buffer=0.025g:0.0025g:0.01g:
100mL, the chromophoric solution can make the test paper for determining total hardness that it is prepared total hardness in the range of 0~560mg/L, especially in total hardness
The aberration that develops the color during more than 360mg/L is apparent, easily differentiates；Correspondingly, colorimetric card is prepared using the test paper for determining total hardness, makes colorimetric card
Standard color block difference is apparent, easily compares, and test paper for determining total hardness and colorimetric card finally can be achieved to be 0~560mg/L scopes to total hardness
Quick, the accurate detection of interior Arbitrary Samples.In addition, in the manufacturing process of test paper for determining total hardness, test paper impregnates 30- in chromophoric solution
35s, and 10min is dried in 60 DEG C, and developing time is designed as 9-11min, the colour developing that can make test paper for determining total hardness is uniform, easily observes
It compares exactly.
Description of the drawings
Fig. 1 be using total hardness concentration for 0,100,360, the MgCl of 560mg/L2Standard solution is added dropwise respectively in four cities
Sell the test paper color development figure of test paper
Fig. 2 is the figure of one colorimetric card of embodiment；
Fig. 3 is the colour developing figure that one or four sample drops of embodiment add up basicity test paper.
Specific embodiment
Embodiment one
The present embodiment provides a kind of for detecting the total hardness detecting system and its user that total hardness is 0-560mg/L
Method.Total hardness detecting system is made of test paper for determining total hardness and colorimetric card.
Test paper for determining total hardness is prepared according to the following steps：Step A, prepare chromophoric solution, chromophoric solution by eriochrome black T, alizarin,
The phosphate buffer of polyvinylpyrrolidone and pH=10 are formulated, eriochrome black T:Alizarin:Polyvinylpyrrolidone:Phosphoric acid buffer
Liquid=0.025g:0.0025g:0.01g:100mL, specific process for preparation are：The phosphate buffer of pH=10 is prepared, is claimed in proportion
Eriochrome black T and alizarin is taken to be dissolved in phosphate buffer, and by phosphate buffer constant volume, then be proportionally added into polyvinyl pyrrole in proportion
Alkanone.Step B, test paper is placed in chromophoric solution, impregnates 30s；Step C, by the test paper after immersion in 60 DEG C, 10min is dried,
Obtain test paper for determining total hardness.
Wherein, test paper is H-4 blotting papers.
Colorimetric card is prepared according to the following steps：Step a, on four test paper for determining total hardness, total hardness concentration is added dropwise respectively
For 0,100,360, the MgCl of 560mg/L2Standard solution.Step b, treat that 10min develops the color, using the total of colorimetric instrument scanning colour developing
Hardness test paper, the tristimulus values of the test paper for determining total hardness to be developed the color make standard color block according to tristimulus values.Step c, by standard
The corresponding total hardness concentration of color lump is arranged in order standard color block, obtains colorimetric card, as shown in Figure 2.
The application method of total hardness detecting system：Four river water 1, river water 2, mineral water and distilled water samples to be tested are added dropwise
On test paper for determining total hardness, after 10min colour developings, the colour developing color of test paper for determining total hardness is observed.Wherein, the total hardness of river water 1 is added dropwise
Test paper is lilac, and the test paper for determining total hardness of river water 2 is added dropwise as lilac darkviolet, and the total hardness examination of mineral water and distilled water is added dropwise
Paper is black-and-blue, as shown in Figure 3.By the test paper for determining total hardness of four colour developings compared with the standard color block of colorimetric card, obtain and total hard
Standard color block similar in spending the colour developing color of test paper reads the respective concentration of standard color block, is the total hardness of sample, specific to tie
Fruit is shown in Table 1.
In addition, according to the national standard GB/T 5750.4-2006 drinking water standard methods of inspection, river water 1, river are detected respectively
Four water 2, mineral water and distilled water samples, to verify the accuracy of total hardness detecting system, testing result is shown in Table 1.
Embodiment two
The present embodiment provides a kind of for detecting the total hardness detecting system and its user that total hardness is 0-560mg/L
Method.Total hardness detecting system is made of test paper for determining total hardness and colorimetric card.
Test paper for determining total hardness is prepared according to the following steps：Step A, prepare chromophoric solution, chromophoric solution by eriochrome black T, alizarin,
The phosphate buffer of polyvinylpyrrolidone and pH=10 are formulated, eriochrome black T:Alizarin:Polyvinylpyrrolidone:Phosphoric acid buffer
Liquid=0.02g:0.003g:0.005g:110mL, specific process for preparation are：The phosphate buffer of pH=10 is prepared, is claimed in proportion
Eriochrome black T and alizarin is taken to be dissolved in phosphate buffer, and by phosphate buffer constant volume, then be proportionally added into polyvinyl pyrrole in proportion
Alkanone.Step B, test paper is placed in chromophoric solution, impregnates 35s；Step C, by the test paper after immersion in 55 DEG C, 10min is dried,
Obtain test paper for determining total hardness.
Wherein, test paper is H-4 blotting papers.
Colorimetric card is prepared according to the following steps：Step a, on four test paper for determining total hardness, total hardness concentration is added dropwise respectively
For 0,100,360, the MgCl of 560mg/L2Standard solution.Step b, treat that 9min develops the color, using the total of colorimetric instrument scanning colour developing
Hardness test paper, the tristimulus values of the test paper for determining total hardness to be developed the color make standard color block according to tristimulus values.Step c, by standard
The corresponding total hardness concentration of color lump is arranged in order standard color block, obtains colorimetric card.
The application method of total hardness detecting system：Four river water 1, river water 2, mineral water and distilled water samples to be tested are added dropwise
On test paper for determining total hardness, after 9min colour developings, the colour developing color of test paper for determining total hardness is observed.Wherein, the total hardness examination of river water 1 is added dropwise
Paper is lilac, and the test paper for determining total hardness of river water 2 is added dropwise as lilac darkviolet, the test paper for determining total hardness of mineral water and distilled water is added dropwise
To be black-and-blue.By the test paper for determining total hardness of four colour developings compared with the standard color block of colorimetric card, the colour developing with test paper for determining total hardness is obtained
Standard color block similar in color reads the respective concentration of standard color block, is the total hardness of sample, and concrete outcome is shown in Table 1.
Embodiment three
The present embodiment provides a kind of for detecting the total hardness detecting system and its user that total hardness is 0-560mg/L
Method.Total hardness detecting system is made of test paper for determining total hardness and colorimetric card.
Test paper for determining total hardness is prepared according to the following steps：Step A, prepare chromophoric solution, chromophoric solution by eriochrome black T, alizarin,
The phosphate buffer of polyvinylpyrrolidone and pH=10 are formulated, eriochrome black T:Alizarin:Polyvinylpyrrolidone:Phosphoric acid buffer
Liquid=0.03g:0.002g:0.015g:90mL, specific process for preparation are：The phosphate buffer of pH=10 is prepared, is weighed in proportion
Eriochrome black T and alizarin are dissolved in phosphate buffer, and by phosphate buffer constant volume, then be proportionally added into polyvinylpyrrolidine in proportion
Ketone.Step B, test paper is placed in chromophoric solution, impregnates 30s；Step C, by the test paper after immersion in 25 DEG C, 40min is dried, is obtained
Obtain test paper for determining total hardness.
Wherein, test paper is H-4 blotting papers.
Colorimetric card is prepared according to the following steps：Step a, on four test paper for determining total hardness, total hardness concentration is added dropwise respectively
For 0,100,360, the MgCl of 560mg/L2Standard solution.Step b, treat that 11min develops the color, using the total of colorimetric instrument scanning colour developing
Hardness test paper, the tristimulus values of the test paper for determining total hardness to be developed the color make standard color block according to tristimulus values.Step c, by standard
The corresponding total hardness concentration of color lump is arranged in order standard color block, obtains colorimetric card.
The application method of total hardness detecting system：Four river water 1, river water 2, mineral water and distilled water samples to be tested are added dropwise
On test paper for determining total hardness, after 11min colour developings, the colour developing color of test paper for determining total hardness is observed.Wherein, the total hardness of river water 1 is added dropwise
Test paper is lilac, and the test paper for determining total hardness of river water 2 is added dropwise as lilac darkviolet, and the total hardness examination of mineral water and distilled water is added dropwise
Paper is black-and-blue.By the test paper for determining total hardness of four colour developings compared with the standard color block of colorimetric card, obtain aobvious with test paper for determining total hardness
Standard color block similar in color color reads the respective concentration of standard color block, is the total hardness of sample, and concrete outcome is shown in Table 1.
The testing result of 1 each method of table and each embodiment
The total hardness detecting system and the detection knot of National Standard Method provided according to the results contrast of table 1, embodiment one, two and three
Fruit is basically identical, consistent with the testing result of National Standard Method especially when total hardness concentration is more than 100mg/L.
Claims (10)
1. a kind of total hardness detecting system for being used to detect that total hardness is 0-560mg/L, it is characterised in that：
It is made of test paper for determining total hardness and colorimetric card；
The test paper for determining total hardness is prepared according to the following steps：
Step A, prepare chromophoric solution, the chromophoric solution by eriochrome black T, alizarin, polyvinylpyrrolidone and pH=10 phosphoric acid
Buffer forms, eriochrome black T:Alizarin:Polyvinylpyrrolidone:Phosphate buffer=0.02~0.03g:0.002~
0.003g:0.005~0.015g:90~110mL；
Step B, test paper is immersed in the chromophoric solution；
Step C, the test paper after dry immersion, obtains the test paper for determining total hardness；
The colorimetric card is prepared according to the following steps：
Step a, on several described test paper for determining total hardness, the standard solution of different total hardness concentration is added dropwise respectively；
Step b, treat that 9-11min develops the color, according to the test paper for determining total hardness of colour developing, make standard color block；
Step c, by the quasi- corresponding total hardness concentration of color lump is marked, the standard color block is arranged in order, obtains the colorimetric
Card.
2. according to claim 1 for detecting the total hardness detecting system that total hardness is 0-560mg/L, feature exists
In：
Wherein, in step A, eriochrome black T:Alizarin:Polyvinylpyrrolidone:Phosphate buffer=0.025g:0.0025g:0.01g:
100mL。
3. according to claim 1 for detecting the total hardness detecting system that total hardness is 0-560mg/L, feature exists
In：
Wherein, in step B, the test paper impregnates 30-35s in the chromophoric solution.
4. according to claim 1 for detecting the total hardness detecting system that total hardness is 0-560mg/L, feature exists
In：
Wherein, in step C, the test paper dries 10-40min in 25-60 DEG C.
5. according to claim 4 for detecting the total hardness detecting system that total hardness is 0-560mg/L, feature exists
In：
Wherein, in step C, the test paper dries 10min in 60 DEG C.
6. according to claim 1 for detecting the total hardness detecting system that total hardness is 0-560mg/L, feature exists
In：
Wherein, the test paper is blotting paper.
7. according to claim 1 for detecting the total hardness detecting system that total hardness is 0-560mg/L, feature exists
In：
Wherein, in step A, the process for preparation of the chromophoric solution is：The phosphate buffer of pH=10 is prepared, weighs chromium in proportion
Black T and alizarin are dissolved in the phosphate buffer, and by phosphate buffer constant volume, then be proportionally added into polyvinyl pyrrole in proportion
Alkanone.
8. according to claim 1 for detecting the total hardness detecting system that total hardness is 0-560mg/L, feature exists
In：
Wherein, in step a, the total hardness scope of the standard solution is 0-560mg/L.
9. according to claim 1 for detecting the total hardness detecting system that total hardness is 0-560mg/L, feature exists
In：
Wherein, in step a, the standard solution is MgCl2Solution.
10. the application method for being used to detect the total hardness detecting system that total hardness is 0-560mg/L described in claim 1-9,
It is characterized in that：
Sample to be tested is added dropwise on the test paper for determining total hardness, after 9-11min colour developings, observes the colour developing of the test paper for determining total hardness
Color, and compared with the standard color block of the colorimetric card, obtain and institute similar in the colour developing color of the test paper for determining total hardness
Standard color block is stated, reads the respective concentration of the standard color block, is the total hardness of the sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611066163.5A CN108072653A (en) | 2016-11-28 | 2016-11-28 | A kind of total hardness detecting system and its application method for being used to detect that total hardness is 0-560mg/L |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611066163.5A CN108072653A (en) | 2016-11-28 | 2016-11-28 | A kind of total hardness detecting system and its application method for being used to detect that total hardness is 0-560mg/L |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108072653A true CN108072653A (en) | 2018-05-25 |
Family
ID=62161649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611066163.5A Pending CN108072653A (en) | 2016-11-28 | 2016-11-28 | A kind of total hardness detecting system and its application method for being used to detect that total hardness is 0-560mg/L |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108072653A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577914A (en) * | 2020-11-18 | 2021-03-30 | 上海仪电科学仪器股份有限公司 | Water hardness determination method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897868A (en) * | 2015-06-02 | 2015-09-09 | 北京福德安科技有限公司 | Six-in-one test paper for fast detecting quality of water in aquarium |
| CN105067611A (en) * | 2015-08-20 | 2015-11-18 | 北京福德安科技有限公司 | Quick test paper for hardness of water |
-
2016
- 2016-11-28 CN CN201611066163.5A patent/CN108072653A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897868A (en) * | 2015-06-02 | 2015-09-09 | 北京福德安科技有限公司 | Six-in-one test paper for fast detecting quality of water in aquarium |
| CN105067611A (en) * | 2015-08-20 | 2015-11-18 | 北京福德安科技有限公司 | Quick test paper for hardness of water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577914A (en) * | 2020-11-18 | 2021-03-30 | 上海仪电科学仪器股份有限公司 | Water hardness determination method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105092571B (en) | A kind of quick determination method of oil paint system titanium dioxide application performance | |
| CN104359901A (en) | Rapid detecting method for hydroxymethyl furfural in honey | |
| CN102095707A (en) | Method for making and applying micro-porosity standard diagram of cast detected by fluorescence permeation | |
| PH12020550962A1 (en) | Devices, kits and methods for detecting misfolded proteins | |
| CN108132247A (en) | A kind of ferrous ion inspects paper and its preparation method and application soon | |
| Chen et al. | Development of a rapid test method for Salmonella enterica detection based on fluorescence probe-based recombinase polymerase amplification | |
| CN108072653A (en) | A kind of total hardness detecting system and its application method for being used to detect that total hardness is 0-560mg/L | |
| WO2016085997A3 (en) | Determination of fertility potential from the oxidation-reduction potential of a biological sample | |
| CN108072656A (en) | A kind of water quality detection pH test paper and water quality detection method | |
| CN104359900B (en) | Kit for quickly detecting content of proline in honey | |
| CN104034711A (en) | Method for detecting potassium dichromate by utilizing graphene quantum dot probe | |
| CN104089956A (en) | Quick water iodine testing kit and testing method thereof | |
| JP2011180038A5 (en) | ||
| CN103389318B (en) | A kind of method differentiating true and false beef and mutton | |
| CN108072651A (en) | A kind of total alkalinity detecting system and its application method for being used to detect that total alkalinity is 0-300mg/L | |
| CN102147372A (en) | Detection method for free chromium in electrical steel coating | |
| CN107228856A (en) | A kind of boiler feedwater quality hardness test agent and its preparation | |
| CN102154523B (en) | Primer for detecting human BK viral nucleic acid, fluorescent probe and application thereof | |
| CN103018241B (en) | Method for rapidly detecting hydrazine content in water in semi-quantitative mode | |
| CN105466901A (en) | Method for measuring content of principal components in high-zirconium brick | |
| CN104076033B (en) | A kind of detection method of prostate gland cell mitochondrial damage | |
| CN108072652A (en) | A kind of ammonia nitrogen detecting system and its application method for being used to detect that ammonia nitrogen concentration is 0.5-6mg/L | |
| CN110987836B (en) | Method for rapidly measuring and calculating sludge heat value based on CIELAB color space | |
| Nakamura et al. | Development of a Pipette-tip-based Colorimetric Biosensor for On-site Diagnosis of Blood Urea Nitrogen. | |
| CN110749593A (en) | Method for rapidly detecting residual quantity of sulfur dioxide in food |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180525 |
|
| RJ01 | Rejection of invention patent application after publication |