CN109612869A - A kind of detection method suitable for bath balls - Google Patents

A kind of detection method suitable for bath balls Download PDF

Info

Publication number
CN109612869A
CN109612869A CN201811311505.4A CN201811311505A CN109612869A CN 109612869 A CN109612869 A CN 109612869A CN 201811311505 A CN201811311505 A CN 201811311505A CN 109612869 A CN109612869 A CN 109612869A
Authority
CN
China
Prior art keywords
bath balls
test tube
bath
balls
detection method
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
Application number
CN201811311505.4A
Other languages
Chinese (zh)
Inventor
邱佳鑫
辜梦丽
徐梦漪
孙铎鹏
温子敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Industry Technical College
Original Assignee
Guangdong Industry Technical College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong Industry Technical College filed Critical Guangdong Industry Technical College
Priority to CN201811311505.4A priority Critical patent/CN109612869A/en
Publication of CN109612869A publication Critical patent/CN109612869A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

The invention discloses a kind of detection methods suitable for bath balls, this kind of method is detected by carrying out foaming quality to bath balls and producing gas ratio, and then evaluate the impact of performance of bath balls, or the formulation of bath balls production criterion is carried out according to testing result, good standardization role is played in production and research and development to bath balls;This method is easy to operate, cost of implementation is lower, and measurement result is accurate, can effectively carry out in processing workshop, product warehouse, laboratory, quickly instant can detect;The variation degree that bath balls produce gas ratio in disintegration can be preferably shown by curve graph, convenient for providing process data for research and development, exploitation;Foaming quality detection can be fast and accurately carried out by rack for test tube, multiple can operate simultaneously, save a large amount of detection times and space.

Description

A kind of detection method suitable for bath balls
Technical field
The present invention relates to daily chemical product fields, and in particular to a kind of detection method suitable for bath balls.
Background technique
Effervesce formula bath balls are a daily chemical products of development and application in recent years, similar to the effervescent tablet in medicine.When After bath balls are lost in water, main ingredient carbonate and acid react and generate a large amount of bubbles (CO2), are disintegrated bath ball, release It is soluble in water to release other effective ingredients.
But there is only the detections to bath balls ingredient, toxic in the field at present, there is no about bath balls performance The correlation technique of detection, but during routine use, the performance indicator of bath balls is also particularly important, especially bath balls Foaming quality, disintegration these performance indicators of effect, can bring serious influence to the usage experience sense of consumer;It is taking a shower simultaneously During the large-scale production of ball, special research and development, also lacks the monitoring and detection of index of correlation, not can guarantee production matter not only Amount, and data support and performance evaluation can not be provided R&D work.
Summary of the invention
It is an object of the present invention in view of the above shortcomings of the prior art, propose a kind of detection side suitable for bath balls Method, this kind of method can effectively measure the Key Performance Indicator of bath balls, the difference of bath balls performance evaluated by measurement result Not.
A kind of detection method suitable for bath balls proposed by the present invention, comprising the following steps:
(1), foaming quality detects: taking bath balls powder 0.4-0.6g, after weighing and records weight value;By the bath balls after weighing Powder is put into dry tool plug test tube;After water 4-6ml is added into test tube again, test tube is sealed rapidly, is recorded in reaction process Invisible spectro initial liquid height and highest foaming height;And pass through formula: (highest foaming height-initial liquid height)/weight Magnitude/2 obtain foaming quality result;
(2), gas is produced than detection: after bath balls are weighed and recording initial weight, beaker is placed on balance and is zeroed or goes Pi Hou is added the water of 500-800g and records weight, the bath balls after weighing are put into equipped with water and are placed on electronic balance On beaker in be disintegrated, start simultaneously at record disintegration time, at the end of bath balls disintegration, immediate record electronic balance is aobvious The final weight shown, disintegration time timing terminate, then pass through formula respectively: production gas ratio=(initial weight+water weight-is last Weight)/initial weight, gas production rate=production gas ratio/disintegration time, obtain the production gas ratio and gas production rate of bath balls.
Further, the tool plug test tube needs dry 20-40min at 100 DEG C.
Further, the foaming quality detection and production gas are both needed at least detect three times than the result of detection, and it is flat to calculate it Mean value and obtain.
Further, the water temperature of the water used is 36-40 DEG C.
Further, in step (2) from start recording disintegration time to disintegration timing terminate between, be both needed to record per minute Gas weight changing value shown by corresponding electronic balance in the time, and formation curve figure.
Further, the beaker outer wall is equipped with the insulating layer to be kept the temperature to beaker inside.
Further, step (1) to be also added into the test tube in vitro mark highest foaming height Toner.
Further, the colorant blue ink or black ink.
Further, further include in step (1) it is a kind of to the fixation test tube and can measure foaming height rack for test tube.
Further, the rack for test tube includes that main body, multiple be set in the main body accommodate the examination to fixed vertically The accommodating cavity of pipe is vertically arranged to measure in the test tube scale of foaming height and in the accommodating cavity to serve as a contrast Hold in the palm the background board of foaming highest label in the test tube.
A kind of detection method suitable for bath balls of the invention, this kind of method by bath balls carry out foaming quality and It produces gas ratio to be detected, and then evaluates the impact of performance of bath balls, or carry out bath balls production according to testing result and determine mark Quasi- formulation, good standardization role is played in production and research and development to bath balls;This method is easy to operate, cost of implementation is lower, And measurement result is accurate, can effectively carry out in processing workshop, product warehouse, laboratory, and it being capable of quickly instant progress Detection;The variation degree that bath balls produce gas ratio in disintegration can be preferably shown by curve graph, convenient for being research and development, exploitation Process data is provided;Foaming quality detection can be fast and accurately carried out by rack for test tube, multiple can be operated simultaneously, is saved big Measure detection time and space.
Detailed description of the invention
Fig. 1 is the rack for test tube structural schematic diagram a kind of detection method suitable for bath balls of the embodiment of the present invention.
In figure: 1- main body, 2- accommodating cavity, 3- scale, 4- background board.
Specific embodiment
For present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate this hair It is bright rather than limit the scope of the invention.In addition, various changes or modification that those skilled in the art make the present invention, this A little equivalent forms are equally fallen in the application range claimed.Proportion in the embodiment of the present invention is by weight.
Embodiment 1
A kind of detection method suitable for bath balls proposed by the present invention, comprising the following steps:
(1), foaming quality detects: taking bath balls powder 0.4-0.6g, after weighing and records weight value;By the bath balls after weighing Powder is put into dry tool plug test tube;After water 4-6ml is added into test tube again, test tube is sealed rapidly, is recorded in reaction process Invisible spectro initial liquid height and highest foaming height;And pass through formula: (highest foaming height-initial liquid height)/weight Magnitude/2 obtain foaming quality result;
(2), gas is produced than detection: after bath balls are weighed and recording initial weight, beaker is placed on balance and is zeroed or goes Pi Hou is added the water of 500-800g and records weight, the bath balls after weighing are put into equipped with water and are placed on electronic balance On beaker in be disintegrated, start simultaneously at record disintegration time, at the end of bath balls disintegration, immediate record electronic balance is aobvious The final weight shown, disintegration time timing terminate, then pass through formula respectively: production gas ratio=(initial weight+water weight-is last Weight)/initial weight, gas production rate=production gas ratio/disintegration time, obtain the production gas ratio and gas production rate of bath balls.
Foaming quality detection in the present invention is the disintegration dynamics and intensity for detecting bath balls, and be disintegrated dynamics and Intensity is by the mechanicalness of bubble structure and surfactant etc. because usually determining, but these factors it is actually detected when more Complexity, so can intuitively measure the characteristic by foaming height.
It is for measuring bath balls CO when disintegration is reacted that gas ratio, which is produced, with gas production rate2Quantum of output, since bath balls generate The CO that generates when being largely by reacting of foam2Filling, that is, CO2Output directly decide that bath balls produce when in use Raw number of bubbles, and then decide the disintegration effect of bath balls, so the foaming quality detection and production gas in the present invention are than inspection The performance of the bigger bath balls of the result value of survey is better.
Meanwhile the present invention can also obtain the data of disintegration time while detection, it not only can effectively evaluating The use duration of bath balls, while can also be used as the detection method that bath balls deliquesce failure, the foaming quality inspection in the present invention Gas is surveyed and produced than detecting the detection that bath balls also may be implemented and deliquesce failure, since bath balls will appear deliquescence under humid air Reaction causes to be disintegrated effect decline, thus will affect foaming quality and produces gas ratio, makes the reduction of its numerical value.
Tool plug test tube needs dry 20-40min at 100 DEG C.The purpose is to guarantee that amphidromic humid air is to shower in test tube Ball powder is influenced.
Foaming quality detection and production gas are both needed at least detect three times than the result of detection, calculate its average value and obtain.Its mesh Be to keep experimental data more accurate true.
The water temperature of the water used is 36-40 DEG C.Temperature is used close to consumer.
In step (2) from start recording disintegration time to disintegration timing terminate between, be both needed to record in the time per minute Gas weight changing value shown by corresponding electronic balance, and formation curve figure.Convenient for collapsing in bath balls use process Solution variation, which is controlled and studied, provides data support.
Beaker outer wall is equipped with the insulating layer to be kept the temperature to beaker inside.Prevent water in the cup from cooling down rapidly.
The colorant in vitro to mark highest foaming height will be also added in step (1) into test tube.
Colorant blue ink or black ink.The purpose is to which preferably bubble height in test tube can be observed in measurement, It is sticked on inboard wall of test tube by bubble after the coloring of colorant with certain color, convenient for measurement.
It further include a kind of rack for test tube to fix test tube and can measure foaming height in step (1).
Rack for test tube include main body 1, it is multiple in the main body 1 to the accommodating cavity 2 of fixed accommodating test tube vertically, be vertically arranged To the back for measuring the scale 3 of foaming height in test tube and being marked in accommodating cavity 2 to set off the highest that foams in test tube Scape plate 4.
Embodiment 2
(1), foaming quality detects: taking bath balls powder 0.5g, records weight value;Bath balls powder after weighing is put into drying Tool plug test tube in;After water 5ml is added into test tube again, 38 DEG C of water temperature, test tube is sealed rapidly, is recorded in reaction process in test tube Initial liquid height and highest foaming height;And calculated by formula: (22.1-5)/0.5/2=17.1 obtains foaming quality It as a result is 17.1;
(2), produce gas than detection: after bath balls are weighed and to record initial weight be 350.6g, and beaker is placed on balance After zero or peeling, the water of 500g is added and records weight, the bath balls after weighing are put into equipped with water and are placed on electronics It is disintegrated in beaker on balance, 38 DEG C of water temperature, starts simultaneously at record disintegration time, at the end of bath balls disintegration, immediately The final weight that record electronic balance is shown, disintegration time timing terminate, then are calculated respectively by formula: 64.2/350.6= 0.183,0.183/4.17=0.044 respectively obtains the production gas of bath balls than 0.183 and gas production rate 0.044.
Embodiment 3
(1), foaming quality detects: taking bath balls powder 0.4g, records weight value;Bath balls powder after weighing is put into drying Tool plug test tube in;After water 4ml is added into test tube again, 36 DEG C of water temperature, test tube is sealed rapidly, is recorded in reaction process in test tube Initial liquid height and highest foaming height;And calculated by formula: (17.3-4)/0.4/2=16.6 obtains foaming quality It as a result is 16.6;
(2), produce gas than detection: after bath balls are weighed and to record initial weight be 349.5g, and beaker is placed on balance After zero or peeling, the water of 650g is added and records weight, the bath balls after weighing are put into equipped with water and are placed on electronics It is disintegrated in beaker on balance, 36 DEG C of water temperature, starts simultaneously at record disintegration time, at the end of bath balls disintegration, immediately The final weight that record electronic balance is shown, disintegration time timing terminate, then are calculated respectively by formula: 65.4/349.5= 0.19,0.187/4.11=0.046 respectively obtains the production gas of bath balls than 0.187 and gas production rate 0.045.
Embodiment 4
(1), foaming quality detects: taking bath balls powder 0.6g, records weight value;Bath balls powder after weighing is put into drying Tool plug test tube in;After water 6ml is added into test tube again, 40 DEG C of water temperature, test tube is sealed rapidly, is recorded in reaction process in test tube Initial liquid height and highest foaming height;And calculated by formula: (24.6-6)/0.6/2=15.5 obtains foaming quality It as a result is 15.5;
(2), produce gas than detection: after bath balls are weighed and to record initial weight be 351.1g, and beaker is placed on balance After zero or peeling, the water of 800g is added and records weight, the bath balls after weighing are put into equipped with water and are placed on electronics It is disintegrated in beaker on balance, 40 DEG C of water temperature, starts simultaneously at record disintegration time, at the end of bath balls disintegration, immediately The final weight that record electronic balance is shown, disintegration time timing terminate, then are calculated respectively by formula: 64.6/351.1= 0.184,0.184/4.23=0.044 respectively obtains the production gas of bath balls than 0.184 and gas production rate 0.044.
Embodiment 5
(1), foaming quality detects: taking bath balls powder 0.5g, records weight value;Bath balls powder after weighing is put into drying Tool plug test tube in;After water 4ml is added into test tube again, 38 DEG C of water temperature, test tube is sealed rapidly, is recorded in reaction process in test tube Initial liquid height and highest foaming height;And calculated by formula: (10.4-4)/0.5/2=6.4 obtains foaming quality knot Fruit is 6.4;
(2), produce gas than detection: after bath balls are weighed and to record initial weight be 348.6g, and beaker is placed on balance After zero or peeling, the water of 800g is added and records weight, the bath balls after weighing are put into equipped with water and are placed on electronics It is disintegrated in beaker on balance, 38 DEG C of water temperature, starts simultaneously at record disintegration time, at the end of bath balls disintegration, immediately The final weight that record electronic balance is shown, disintegration time timing terminate, then are calculated respectively by formula: 23.1/348.6= 0.066,0.066/2.69=0.025 respectively obtains the production gas of bath balls than 0.066 and gas production rate 0.025.
Embodiment 6
(1), foaming quality detects: taking bath balls powder 0.6g, records weight value;Bath balls powder after weighing is put into drying Tool plug test tube in;After water 5ml is added into test tube again, 38 DEG C of water temperature, test tube is sealed rapidly, is recorded in reaction process in test tube Initial liquid height and highest foaming height;And calculated by formula: (12.1-5)/0.6/2=5.9 obtains foaming quality knot Fruit is 5.9;
(2), produce gas than detection: after bath balls are weighed and to record initial weight be 338.3g, and beaker is placed on balance After zero or peeling, the water of 800g is added and records weight, the bath balls after weighing are put into equipped with water and are placed on electronics It is disintegrated in beaker on balance, 38 DEG C of water temperature, starts simultaneously at record disintegration time, at the end of bath balls disintegration, immediately The final weight that record electronic balance is shown, disintegration time timing terminate, then are calculated respectively by formula: 21.0/338.3= 0.06,0.062/2.91=0.021 respectively obtains the production gas of bath balls than 0.062 and gas production rate 0.021.
It carries out the detection data that embodiment 2, embodiment 2, embodiment 2, comparative example 1 and comparative example 2 obtain to summarize comparison, It is shown in Table 1.
By table 1 it can be concluded that the data of embodiment 2,3,4 want bright in all data that embodiment 2,3,4,5 and 6 obtains The aobvious data better than embodiment 5 and 6, performance indicator gap is obvious, while it can be concluded that embodiment 5 and 6 is likely to occur deliquescence mistake The case where effect or composition proportion are lacked of proper care.
Exemplary illustration is carried out to the embodiment of the present invention above, but the content is only preferable implementation of the invention Example, should not be considered as limiting the scope of the invention.All the changes and improvements etc. of all application ranges according to the present invention, It should all fall within the scope of the patent of the present invention.

Claims (10)

1. a kind of detection method suitable for bath balls, it is characterised in that: the following steps are included:
(1), foaming quality detects: taking bath balls powder 0.4-0.6g, after weighing and records weight value;By the bath balls after weighing Powder is put into dry tool plug test tube;After water 4-6ml is added into test tube again, test tube is sealed rapidly, is recorded in reaction process Invisible spectro initial liquid height and highest foaming height;And pass through formula: (highest foaming height-initial liquid height)/weight Magnitude/2 obtain foaming quality result;
(2), gas is produced than detection: after bath balls are weighed and recording initial weight, beaker is placed on balance and is zeroed or goes Pi Hou is added the water of 500-800g and records weight, the bath balls after weighing are put into equipped with water and are placed on electronic balance On beaker in be disintegrated, start simultaneously at record disintegration time, at the end of bath balls disintegration, immediate record electronic balance is aobvious The final weight shown, disintegration time timing terminate, then pass through formula respectively: production gas ratio=(initial weight+water weight-is last Weight)/initial weight, gas production rate=production gas ratio/disintegration time, obtain the production gas ratio and gas production rate of bath balls.
2. a kind of detection method suitable for bath balls as described in claim 1, it is characterised in that: the tool plug test tube needs 20-40min is dried at 100 DEG C.
3. a kind of detection method suitable for bath balls as described in claim 1, it is characterised in that: the foaming quality detection It is both needed at least detect three times than the result of detection with gas is produced, calculates its average value and obtain.
4. a kind of detection method suitable for bath balls as described in claim 1, it is characterised in that: the water temperature of the water used for 36-40℃。
5. a kind of detection method suitable for bath balls as described in claim 1, it is characterised in that: in step (2) from the beginning of Record disintegration time to disintegration timing is both needed to record per minute gas shown by corresponding electronic balance in the time between terminating Body weight changing value, and formation curve figure.
6. a kind of detection method suitable for bath balls as described in claim 1, it is characterised in that: the beaker outer wall is equipped with To the insulating layer kept the temperature to beaker inside.
7. a kind of detection method suitable for bath balls as described in claim 1, it is characterised in that: step (1) will also be to institute State the colorant being added in test tube in vitro to mark highest foaming height.
8. a kind of detection method suitable for bath balls as claimed in claim 7, it is characterised in that: the colorant blue ink Or black ink.
9. a kind of detection method suitable for bath balls as described in claim 1, it is characterised in that: step further includes in (1) It is a kind of to the fixation test tube and can measure foaming height rack for test tube.
10. a kind of detection method suitable for bath balls as claimed in claim 9, it is characterised in that: the rack for test tube includes Main body (1), it is multiple on the main body (1) to the fixed accommodating cavity (2) for accommodating the test tube vertically, be vertically arranged to It measures the scale (3) of foaming height in the test tube and is set in the accommodating cavity (2) and foam to set off in the test tube The background board (4) of highest label.
CN201811311505.4A 2018-11-06 2018-11-06 A kind of detection method suitable for bath balls Pending CN109612869A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811311505.4A CN109612869A (en) 2018-11-06 2018-11-06 A kind of detection method suitable for bath balls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811311505.4A CN109612869A (en) 2018-11-06 2018-11-06 A kind of detection method suitable for bath balls

Publications (1)

Publication Number Publication Date
CN109612869A true CN109612869A (en) 2019-04-12

Family

ID=66002499

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811311505.4A Pending CN109612869A (en) 2018-11-06 2018-11-06 A kind of detection method suitable for bath balls

Country Status (1)

Country Link
CN (1) CN109612869A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102178266A (en) * 2011-04-14 2011-09-14 吉林大学 Quick-dissolving egg effervescent tablet
CN102225090A (en) * 2011-06-15 2011-10-26 江西施美制药有限公司 Preparation technology for sophora flavescens effervescent tablet
CN203164169U (en) * 2013-04-12 2013-08-28 安徽理工大学 Foaming height testing device
CN103969142A (en) * 2014-05-19 2014-08-06 浙江宏途交通工程科技有限公司 Detection device for performances of foam concrete foaming agent and operation method thereof
CN104622938A (en) * 2014-12-09 2015-05-20 石河子大学 Citrullus lanatus.convar megulaspemus (L.) skin extract and medical application and preparation method of composition
CN104783292A (en) * 2015-04-15 2015-07-22 沈阳药科大学 Lycium ruthenicum Murr effervescent tablet and preparation method thereof
CN205483894U (en) * 2016-01-27 2016-08-17 陕西铁路工程职业技术学院 Measurement device for foaming agent expansion ratio and foaming stabilization
CN107510831A (en) * 2017-08-25 2017-12-26 皖南医学院 A kind of ventilation of cardiac stimulant is dispeled cold antimicrobial form effervescent tablet and preparation method thereof
CN108576544A (en) * 2018-04-11 2018-09-28 云南中医学院 Yunnan olive honeysuckle effervescent tablet and preparation method thereof

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102178266A (en) * 2011-04-14 2011-09-14 吉林大学 Quick-dissolving egg effervescent tablet
CN102225090A (en) * 2011-06-15 2011-10-26 江西施美制药有限公司 Preparation technology for sophora flavescens effervescent tablet
CN203164169U (en) * 2013-04-12 2013-08-28 安徽理工大学 Foaming height testing device
CN103969142A (en) * 2014-05-19 2014-08-06 浙江宏途交通工程科技有限公司 Detection device for performances of foam concrete foaming agent and operation method thereof
CN104622938A (en) * 2014-12-09 2015-05-20 石河子大学 Citrullus lanatus.convar megulaspemus (L.) skin extract and medical application and preparation method of composition
CN104783292A (en) * 2015-04-15 2015-07-22 沈阳药科大学 Lycium ruthenicum Murr effervescent tablet and preparation method thereof
CN205483894U (en) * 2016-01-27 2016-08-17 陕西铁路工程职业技术学院 Measurement device for foaming agent expansion ratio and foaming stabilization
CN107510831A (en) * 2017-08-25 2017-12-26 皖南医学院 A kind of ventilation of cardiac stimulant is dispeled cold antimicrobial form effervescent tablet and preparation method thereof
CN108576544A (en) * 2018-04-11 2018-09-28 云南中医学院 Yunnan olive honeysuckle effervescent tablet and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
李锦 等: "几种泡腾制剂的二氧化碳测定方法比较", 《中成药》 *
范宝庆: "黑莓泡腾片的研制", 《现代食品科技》 *

Similar Documents

Publication Publication Date Title
CN201852761U (en) Quick tester for density of slurry explosive
CN101592624B (en) Micro-calorimetric method suitable for quickly detecting total amount of microorganisms in food
CN101226154A (en) Indicating substance for on-line testing formaldehyde oxide gas concentration
CN108152444A (en) Method for detecting content of free nitric acid in bismuth nitrate solution
CN104215738B (en) A kind of method of Zr, Cu, Ni content in simultaneous determination Zr-Cu-Ni-Al non-crystaline amorphous metal
CN103698470B (en) Esterification reagent and method for determining resin hydroxyl value
CN203502399U (en) Rapid food detection box for international transit train
CN109612869A (en) A kind of detection method suitable for bath balls
CN202024991U (en) Device for determining foaming property of surfactant by adopting airflow method under atmospheric pressure condition
CN101799388B (en) Method and apparatus for measuring gas forming quantity of calcium carbide by using single calibrating weight method
CN201429441Y (en) Aluminium powder-evolved gas measurement apparatus
CN103592300A (en) Method of measuring respiration intensity of fresh fruits and vegetables by titrimetric analysis
CN203465257U (en) Portable food component detector
CN202421008U (en) Starch content tester
CN201373834Y (en) Online electronic solution concentration meter
CN207163843U (en) A kind of easy device of gas method measure soil calcium carbonate content
CN104062396A (en) Method for measuring content of nitrogen in metal lithium and lithium alloy
CN203705296U (en) Device for rapidly measuring content of calcium carbonate in soil
CN114018755A (en) Method for detecting content of free carbon dioxide in water body
CN112730736A (en) Compound titration method for determining vitamin C (Vc) content and total acid content in fruits and vegetables
CN215894286U (en) Quick measuring device of carbon dioxide absorbent absorptivity
CN106698345A (en) Lithium deuteride production process and purity detection method of lithium deuteride
CN1995966A (en) Method for detecting oxygen absorption capacity of deoxidizer
Li Evaluation of uncertainty of measurement result of ultrasound anemometer
CN110160909A (en) A kind of measuring method and system of bittern evaporation rate

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: 20190412

RJ01 Rejection of invention patent application after publication