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Measuring method for solid particle counting effectiveness in particle size analysis of resistivity method

A solid particle and particle size analysis technology, applied in particle size analysis, particle and sedimentation analysis, measuring devices, etc., can solve the problems of particle size distribution measurement error, measurement lower limit increase, small hole blockage, etc., to avoid measurement error and improve accuracy , the effect of universal practicability

Inactive Publication Date: 2010-06-30
SHANGHAI INST OF MEASUREMENT & TESTING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For an unknown sample, in order to avoid the clogging of the small hole in the small hole tube caused by large particles, the small hole tube with a larger pore diameter is often selected, but the lower limit of measurement will be improved accordingly. If the particle size distribution in the particle sample Wider, it will lead to many smaller particles can not be detected, which will cause the measurement error of particle size distribution

Method used

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  • Measuring method for solid particle counting effectiveness in particle size analysis of resistivity method
  • Measuring method for solid particle counting effectiveness in particle size analysis of resistivity method
  • Measuring method for solid particle counting effectiveness in particle size analysis of resistivity method

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Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: see figure 1 , the manufacturer of the resistance method particle size analyzer in this embodiment is BECKMANCOULTER Company of the United States, the model is Mutisizer III; the aperture of the small hole tube is 100 μm, and the particle size measurement range of the corresponding particle sample to be tested is 2-60 μm; the electrolyte solution is selected from the United States. The sodium chloride electrolyte solution with a concentration of 0.9% produced by BECKMAN COULTER is named ISOTON II; the particle samples to be measured can be selected from solid particles in nature such as sediment in rivers and dust in the air, milk powder, tea powder, Solid particles in food such as spore powder, insoluble particles in injections and infusions, solid particles in various powder medicines, solid particles in chemical products such as coatings, dyes, abrasives, and powder metallurgy, etc.

[0029]a. Measurement of immersion density ρ: Select a balance with a min...

Embodiment 2

[0036] Example 2: see figure 2 , the manufacturer of the resistance method particle size analyzer in this embodiment is BECKMANCOULTER Company of the United States, the model is Mutisizer III; the aperture of the small hole tube is 560 μm, and the particle size measurement range of the corresponding particle sample to be tested is 11.2-336 μm; the electrolyte solution is selected from the United States. The sodium chloride electrolyte solution with a concentration of 0.9% produced by BECKMAN COULTER is named ISOTON II; the particle samples to be measured can be selected from solid particles in nature such as sediment in rivers and dust in the air, milk powder, tea powder, Solid particles in food such as spore powder, insoluble particles in injections and infusions, solid particles in various powder medicines, solid particles in chemical products such as coatings, dyes, abrasives, and powder metallurgy, etc.

[0037] a. Measurement of immersion density ρ: Select a balance with...

Embodiment 3

[0044] Embodiment 3: see image 3 , the manufacturer of the resistance method particle size analyzer in this embodiment is BECKMANCOULTER Company of the United States, the model is Mutisizer III; the aperture of the small hole tube is 1000 μm, and the particle size measurement range of the corresponding particle sample to be tested is 2-600 μm; the electrolyte solution is selected from the United States. The sodium chloride electrolyte solution with a concentration of 0.9% produced by BECKMAN COULTER is named ISOTON II; the particle samples to be measured can be selected from solid particles in nature such as sediment in rivers and dust in the air, milk powder, tea powder, Solid particles in food such as spore powder, insoluble particles in injections and infusions, solid particles in various powder medicines, solid particles in chemical products such as coatings, dyes, abrasives, and powder metallurgy, etc.

[0045] a. Measurement of immersion density ρ: Select a balance with...

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Abstract

The invention relates to the technical field of metering and testing, in particular to a measuring method for the solid particle counting effectiveness in particle size analysis of a resistivity method, which is characterized by comprising the following steps: a. measuring a soakage density rho; b. preparing a sample; c. analyzing the particle size; d computing the mass number of the solid particles according to the measurement result of the particle size analysis; and e. computing the effectiveness of the solid particle counting by a recovery rate p. Because the technical scheme is adopted, the invention has the advantages that (1) a quantized value is used for judging the solid particle counting effectiveness in the particle size analysis of the resistivity method; (2) the measuring error of particle size analysis because fine particles are not detected can be discovered and avoided, thereby improving the measuring accuracy; and (3) the method has general practicability for measurement.

Description

technical field [0001] The invention relates to the technical field of metering and testing, in particular to a method for measuring the validity of solid particle counting in particle size analysis by resistance method. Background technique [0002] Particle size analysis by resistance method is best known in the early days for blood counting and detection of insoluble particulate matter in large infusions. After improvement and development, it was rapidly popularized and widely used in the measurement of solid particles, droplets in emulsions, and filter material properties. , and has become a test standard for pharmaceutical, abrasive, dye and other industries. [0003] "Principles of Particle Size and Specific Surface Measurement" (Author: Tong Husong) published by Shanghai Science and Technology Literature Publishing House in June 1989 defines particle size analysis as: "One phase is distributed in another phase in a state of fine particles. Dispersion system. The form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/02
Inventor 吴立敏何慈晖徐建辛立辉朱丽娜
Owner SHANGHAI INST OF MEASUREMENT & TESTING TECH