Some standard content:
[S 19.120
National Standard of the People's Republic of China
GB/T 19627--2005/IS0 13321:1996 Particle size analysis
Photon correlation spectroscopy
Particle size analysisPhoton correlalion speclrosuopy(IS0 13321;1996,IT)
2005-01-13 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Administration of Standardization of the People's Republic of China
2005-08-01 Implementation
2 Terms and definitions
Guidelines and definitions
Testing instruments and equipment
Testing procedures
According to the standards
13 Test report| |tt||Appendix A (Normative Appendix)
Calculation of average particle weight and multi-dispersion number of isolated particles (Documentary Appendix)
Test method and storage method
(Documentary Appendix will be removed)
Appendix (Documentary Appendix)
Appendix (Documentary Appendix)
Appendix (Documentary Appendix)
Your special article
Scanning scene
Typical PCS instruments and recommended technical specifications
Product preparation
CB/T19627--2035/ISO 13321:1996t
GB/T 19627-2005/1S0 13321:1596 This standard is equivalent to IS15331:15S6 (F-validity standard photon related North American version). The main changes of this standard 133211996 are: the international standard is replaced by "substitute for this international standard"; the small mark "replaces the small mark number", "replaces the small mark number", "rearranges the numbers" and "re-numbers"; the foreword of 150 in the international standard is deleted; the foreword of the relevant standard formulation instructions is correct. The original text of the calculation formula of the standard deviation is corrected as follows: --i
The A value of this standard is the indication of the quality of the product, the time, the risk and the data are seven: the standard of the screening and screening methods in this standard will mention the standardization of the screening and screening methods. Note: This standard was drafted by the National Testing and Inspection Committee of the National Institute of Standardization of Materials Science and Engineering, Shanghai Institute of Mechanical Science. The main contributors to this standard are: Mian Wendun, Tu Xiaoqiang, Sheng Guangban. G3/719677—2005/1S013321:1996 Introduction
Currently, photon spectroscopy is a conventional method for measuring submicron particles. The successful application of this technology requires the full use of these rich foundations: it can unify the semi-diameter results within a few minutes. Although the new materials still need to be used correctly, the measurement results of the new materials still need to be carefully used. Therefore, a standard for the determination of particle positions by photon correlation spectroscopy is needed to provide a good agreement between the instruments in terms of measurement accuracy and reproducibility. The P standard can be used to thoroughly analyze the particle size, but it seems that the standard is limited to two examples about slight distribution violations: the average particle size and the number of particles can be quickly analyzed by accumulating the number of particles (in the future, A is not required. This does not exclude the more objective information obtained in the particle distribution measurement. The detailed information of the particle distribution is not good enough at the current technical level. The reliability of the full particle distribution method is not good enough. The standard is small; in addition: the standard is not limited to the particle size distribution in special applications. This standard is for a room with a length of 6m or more. The light source of the light source can also be used in the future agricultural machinery. This standard also promotes the use of these proposals; the measurement standard sets some limits under a single angle, and also includes some limits obtained by using other devices at the same time to measure the value of the information. The test process uses isotropic spherical particles. The particle size of the particles is expressed as isotropic and spherical particles. 1 Scope
GB/T19627—2005/ISO13321:1996 Particle size analysis
Photon spectroscopy
This standard specifies the average particle size distribution of particles in a dispersed liquid using the PCS method.
This standard applies to materials with particle sizes ranging from a few nanometers to meters or to particles with a sedimentation plate: During the normal dispersion analysis (see also the reference material), it is assumed that the particles are isotropic and spherical.
2 Terms and definitions
The following technical definitions apply to this standard:
Mean particle size x nanouerage particle dlameter The average diameter of the intensity changes, determined by the formula (,1) in the Appendix. Unit: m (.3-m):
Polydispersity index P1polydispersityindex The quantity of the distribution of the intensity is determined by the formula (,"\) in the Appendix.
Scaling volume scalleringyolum
The typical value of the part of the incident light that is converted by the light collector or detector is: 10"r.
3 Symbols and abbreviations
Intensity relative The relevant function is clearly shown in the equation (C.61; Burr 2 principle
for a given optical age measurement system, the density of the sample, in units of liters (.):
the radiation barrier of the radiating medium;
the number of hot particles in the volume of the component
the mass of the sample, in units of seconds (ma·s): the decay rate!
the wavelength in vacuum (the wavelength of the laser is .8 nanometers)? The particle volume effect:
the number rate is in grams per cubic meter (/m|| tt||The unit is degree "
First-order prime product disk.
Details: The new product is suitable for the concentration of ten drops of material, a monochromatic phase beam is emitted, and the result is recorded by the particle detector (generally speaking, 3 micro-degrees) and transmitted to the correlator. The autocorrelation function of the incident light is decomposed from the average particle angle by the customer's integral analysis method.
Appendix provides some theoretical background information on the measurement medium 5 direct instrument design The main components of a typical photon correlation spectroscopy device are listed below: 5.1 Light source: Monochromatic polarized emitted light, which is a plane light beam composed of a discrete straight beam and a cold beam (straight beam). 5.2 Sample cell: The source difference can be controlled and measured. 5.3 Main light carrier: 5.4 Optical system and detector: Under negative pressure, the scattered light is collected and converted into a digital signal. Liu Cai uses the device to test the position of the light source, that is, the position of the light source with the largest input light, and its electric field is the flatness formed by the direct incident light and the scattered light.
5.5 Correlator
5.6 Calculation unit
Let: The self-positioning device that can meet the technical standards can be used quickly. In different production processes, the manufacturer can produce different types of receivers. For the estimation of the position of the device, it is impossible to see enough Yi Si. Medical D can provide a wide range of P instruments. Technical specifications. 6 Preparatory procedures
6. 1 The instrument should be placed in a clean environment, away from strong vibrations, away from direct sunlight, and if organic liquids are used (such as refracting lasers and/or floating products), comply with local health and safety requirements and be equipped with good ventilation. The instrument is placed on a shockproof workbench to avoid frequent focus of the optical system. Warning: P(3 The instrument contains a low or medium power laser, the radiation of which can cause permanent damage to the instrument. Do not contact the laser beam or its reflections Beam, when the laser beam is on, do not use highly reflective surfaces. Be sure to follow the local optical safety rules:
6.2 Sample preparation and testing
6.2.1 The sample should be a wave medium with good dispersion. The individual properties should meet the requirements: It should be transparent and non-absorbent at the cut-off wavelength!
1) The materials used in the instrument are compatible;
c) The sample particles should not dissolve in the liquid medium, not aggregate, and not be different from the original;
e) The refractive index and accuracy should be excellent.: "》 Monitor the filtration thoroughly.
Ask the end band to use a dispersion medium. Use a new single piece of distilled water (made of quartz glass) or a large filtered water (filter. 2m). For any stable dispersion system, the distribution of relatively fine particles will affect the test results. For example, the number of people added to the test can reduce the structure of the test material. If the point is within the interval of 0.15> half the average receiving time (such as the time of half the average receiving time) suddenly appears CK/119627-2CC5/1S0133211996: the number of products is full. Then it means that the liquid The appearance of dust in the medium: The laser light flash point is often also an indication of dust in the liquid medium. This is provided that the material is further purified (by filtration and/or lubrication) before use. The medium is not contaminated (or the signal is very low): Sample preparation method Appendix 5.2.2 The sample should have an appropriate degree of light, and the following two conditions must be met: 1) The sample contains a large number of microparticles, and the scattered light intensity generated is 13 times that of the radiated light medium. 2) The sample should contain about 50 (range) less than 100 (range) less than ... Note: The effect can be estimated by the following measurement of the light and volume. The typical teaching experience of Nts
is 1cm. The actual effect of the net whole volume can be determined by the formula: the effect is a big effect. Note: The light volume of the tester will also be reduced accordingly. This method may not be perfect if the test is done by T for the day. The maximum is this! There is no multiple scattered shots from the car. It can be determined under the radiation conditions. If there are multiple scattered images, the following items can be verified.
) The sample has no obvious: it looks very clear or only has a light burning cloud or a mixed image. This is verified by the product quality tester before measurement. The measurement is more detailed in the instructions or chapters of the manufacturer. If the laser light can only be indirectly received by the sample, a clear parallel beam of light does not exist. There is no halo or any obvious absorption in the micro-light. If it can be measured, the time is longer! When the tube length is greater than ., the film can be changed to multiple scattered images. In many applications, when the particle size m is small, the above requirements can be met. The volume of the particle material can be divided into the fraction (m) of the volume of the material in the unit volume (m) equal to the reported rate multiplied by the integral: = production, for more points and or doubts, it is recognized that the increase in the volume of the day will neither increase the aperture nor increase the diameter of the laser beam, and there is no suitable length that can meet the design conditions. If this is not the case, the intercept may not be obtained for a long time. When the particle size is large, the killing condition can only be met under special circumstances. Measurement procedure
This measurement procedure assumes that the instrument is correctly installed and debugged, refer to the instrument manual, 7.1 Instrument performance. Specific heat
A teaching need, .1 Make the light intensity real and the sample stand reach the set temperature: 7.2 Check that the average sweat number of the whole sample and the quality are firmly fixed, 3 Place the six dispersed samples on the parent plate and change the sample to temperature equilibrium. The accuracy of the control and measurement is within 13 degrees: For evaluation, select the section of the instrument with 1cm2 of the body resistance and measure the body resistance to reach equilibrium. When the sample condition reaches equilibrium, it is believed that the particle size of the sample is different from that of the dispersed medium. : Details of the method: to achieve a test product · only the product selection product rack product into a fixed value of the room humidity delivery some of the. : the four can quickly to the publicity effect of the sample oil printing pool mother, the method a product oil release as a rich state with the product support humidity setting and the difference. 3-this case before measuring the product wave outside the water to avoid to confirm and scatter the media two fold rate 74 sound recording a dose of data push Er recognition, I light wave and time (total time! , to the amount of temperature development, you scatter the price of the protection of the system number of concentration, in order to change the load of other details, GB/T19627-2005/1XJ13321:19967. 5 preparatory measurement, to verify the new concentration of particles after the skin is too low in the scattering volume of less than 1X see 6.3.2 b), or when too much film 6.2.2. The format for verifying the dispersion should be between 5,000/color (1 digit/second, 300 digits/second) and 1 x Ju (1 digit/second). If the following is not true, use another sample with a different particle concentration to measure again. The laser can be used to measure at least three times. Each measurement should be repeated for at least 10 minutes. The measurement results should be stored for a period of time: for samples with a counting rate of 0.330 per second (0.330 per sample), the measurement duration should be at least equal to -20 (12/92) divided by the counting rate (counts/second). The average particle size I and polynomial index PI of the measured particles are recorded and their average values are calculated: where: 7.8 If the average particle size of the sample is related to the desired particle concentration, the particle size at the lowest acceptable level or at the time of infinite release should be calculated. ：
position: 2.2 in the quality of ~ or except by your hearing before and, when the body book effect stays over the heart 01 when the smaller supply 1Tm Sichuan Appendix heart mountain beauty calculation mountain, PC out of the trap level is relatively selected public day expected rejection city explosion Sichuan and cattle before light, because, for a known system of teaching, it is recommended to die less than the corresponding! The average particle size of the type of the letter creation within the specification, the depth of 1.: to 7., 9 at the end of the amount of confirmation accompanied by the change of the certificate drop. If the hair style, drop, with what sample particles two condensation and said symptoms, or the product depends on the beginning of the piece of wood is not legal disk 8 calibration and verification
in the use of C method thoroughly according to the basic theory of the absolute force method, this instrument can be small must be calibrated. After the initial installation of the instrument, at a certain time interval thereafter, or when there is a problem, the performance of the instrument must be verified by using a trained test system. The average particle size distribution of about 1 μm above the surface of the instrument can be verified by the 5-point method. For this test system, the average particle size of the measured material and the calibrated average particle size are within 2 μm, and the repeatability is defined as 100. The "excellent" and small absorption index should be used. 1. Note: The balls with larger inner holes should be used. The National Institute of Standards and Technology (NI) of the United States provides a standard test for polyvinyl latex spheres with a particle size of 1.7 nm (see Special 1). Appendix: Guide to the use of the following method to determine the maximum distance between the particles: 1) Select a w value for use; 2) Polyvinyl latex spheres with a particle size of approximately 00a. The test distance should be measured at least 3 times under the same concentration condition (Appendix A). If the distance B is not well correlated with the particle concentration, then the standard should be set to the limit concentration and the formula should be obtained. 9 Repeatability The average diameter is determined to be 00-10%. 10 Test Report The report should include the particle average, particle size and number of pieces PI. The method given in the Annex is to calculate the average particle size index (PI) of the sample. The same sample shall be measured at least twice and its average value and standard deviation shall be calculated. If the average value of the measured value is related to the variation, the value measured when extrapolated to the limit dilution or the lowest concentration shall be given. The following information shall be provided: complete detailed product identification information, including shape and type of homogenizer, detailed description of the sampling instrument. Note: The following values of the laser light source shall also be provided: type, length, power, relative humidity, relative humidity, etc. Conditions:
Fraction and its purification/filtration process:
Concentration of sample particles:
Analytical agent and its concentration!
Division and analysis:
Toughness mountain wave case, short rate and work volume (if necessary):) Test conditions:
Depth of the test times!
Test and stop! The number of starting points in the mountain depends on the degree and the particle size. The most accurate calculation is based on the torque of the relevant information.Note: This problem can be solved by using known related functions (see Chapter 8 and Appendix 4):
the ratio of H and R, B mentioned above;
the measured value of the dispersion medium pressure;
the viscosity of the separation medium and the refractive index;
the temperature of the sample station;
the average counting rate of the sample;
the number of virtual times each creation is collected with the duration
the fitting factors recorded in equation A;
) can include any useful characteristics obtained in the actual or multi-angle radiation measurement and can be used to evaluate the data analysis methods and the results obtained by other particle size measurement methods; t) Author's identity:
- name and address of the laboratory:
- name or address of the author;
- measurement date. Appendix B: A typical test report format, GB/T19627-2005/1S()13321:1996 Appendix (Normative Reference) Topic: Calculation of particle size and polydispersity number in the standard particle size distribution, PS mean particle diameter and particle distribution number 1. These integer rate analysis method "formulas are used to determine the basis of this analysis. The formula in Appendix C (12) is used to verify the experimental design of the degree of dispersion (). In order to obtain the numerical regression, this equation is simplified as follows: -( -A, AB-F>-
aa.t, +at,(, = J.2.3*m?
Where:
The number of delay channels of a switch.
The basic system point can be measured by two methods: In the whole experiment: The sum of the number of light beams measured during the total duration, the delay time is called the value of G> when 2: The basic calculation method is used to determine the difference, and the largest of the two is retained. However, when the difference between the estimated values of the line break is greater than 1(F times the minimum value, the measurement is performed Change, and re-measure. + The guaranteed effective value range corresponds to 00
)-A special range where at least one value is smaller than 1/0, in which all the values within each G must be the same as the following values, and re-measurement is required. In the acceptable range, the number of values m is less than 20, and the experimentally determined equation (4) is multiplied by the square operation, and the following equation is minimized:
afm-atwg) =
In the normalized weighting factor (A2) EE::
,ty-+ae-
expresses the original effect according to the non-OR light conversion of the industry> value, PCS average particle size: The following formula is used to calculate the waveguide effect adjustment:
one absolute temperature, the unit is and Kelvin (K): nsir(5/)
-the change unit of the acid medium is second (mFa)-the refractive index of the micro-medium:
the angle of incidence, the unit is ("》):
the real luminous wavelength. The unit price is nanometer (rm), E
(A.2)
multiple index and
PT= 2a./e
actual path B. A:
expi2a.:A
GR/T19627—2005/ISO13321.1396(A.4)
can be compared with the maximum compensation B obtained in a certain experimental case. If it is true that the difference with B is 1.1, then the change in the value and the difference (—41
can be used as the basis for the goodness of fit:
CB/T19627—2005/ISO13321:1996B, 1 Sample identification
Product description
1) Dispersion particle size
Homogeneous sphericity
Non-homogeneous sphericity
Unknown shape and/or homogeneity
Uniform
Non-homogeneous and non-spherical wwW.bzxz.Net
E.2 Instrument model and serial number
a. Instrument number and confirmation
(Detailed description is required for instruments with strong specifications)
b) Light source
| Wavelength r
Motion rate:
Accurate;
Vertical
Radiation and degree:
Dispersion conditions
Separation liquid level:
Purification/excessive strength,
Appendix B
(Informative Appendix)
Recommended test report format
Separation procedure: Key points about sample separation (optional) Example: Whether ultrasonic treatment is performed
Whether there is precipitation
B, 4 Measurement properties
Number of concentrations to be tested:
Particle density change (if known:
Particle light radiation (number has been part),
Detailed description of a method
. Frost pull number ratio concentration waste:
Frequency new volume fraction:2 Instrument model and number a) Media number and specification (detailed description for instruments with strong specifications) b) Light source wavelength r: accuracy; vertical radiation and degree: dispersion conditions: separation liquid level: purification/overexcitation, Appendix B (informative) Recommended test report format: Separation procedure: Key points on sample separation (optional) For example, whether ultrasonic treatment is performed and whether there is precipitation B, 4 Measurement strip properties
Test concentration number:
Particle density change (if known:
Particle light precipitation (number has been part),
A detailed description of the method
. Frost pull number ratio concentration waste:
Frequency new volume fraction:2 Instrument model and number a) Media number and specification (detailed description for instruments with strong specifications) b) Light source wavelength r: accuracy; vertical radiation and degree: dispersion conditions: separation liquid level: purification/overexcitation, Appendix B (informative) Recommended test report format: Separation procedure: Key points on sample separation (optional) For example, whether ultrasonic treatment is performed and whether there is precipitation B, 4 Measurement strip properties
Test concentration number:
Particle density change (if known:
Particle light precipitation (number has been part),
A detailed description of the method
. Frost pull number ratio concentration waste:
Frequency new volume fraction:
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