Path: Home > GB/T > Page676 > GB/T 19077-2024 || Home > Standard_List > GB/T > Page676 > GB/T 19077-2024
GB/T 19077-2024 English PDF
Price & DeliveryUS$995.00 · In stock · Download in 9 secondsGB/T 19077-2024: Particle size analysis - Laser diffraction methods Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid
GB/T 19077: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 19077-2024 | English | 995 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Particle size analysis - Laser diffraction methods
| Valid |
| GB/T 19077-2016 | English | 620 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Particle size analysis -- Laser diffraction methods
| Valid |
| GB/T 19077.1-2008 | English | RFQ |
ASK
|
4 days
|
Particle size analysis -- Laser diffraction methods -- Part 1: General principles
| Obsolete |
| GB/T 19077.1-2003 | English | RFQ |
ASK
|
9 days
|
Particle size analysis -- Laser diffraction method
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 19077-2024
GB/T 19077-2024: Particle size analysis - Laser diffraction methods
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT19077-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 19.120
CCS A 28
GB/T 19077-2024 / ISO 13320.2020
Replacing GB/T 19077-2016
Particle Size Analysis – Laser Diffraction Methods
(ISO 13320.2020, IDT)
Issued on: OCTOBER 26, 2024
Implemented on: MAY 1, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
Introduction... 6
1 Scope... 7
2 Normative References... 7
3 Terms, Definitions and Symbols... 8
3.1 Terms and definitions... 8
3.2 Symbols... 14
4 Principle... 16
4.1 General... 16
4.2 Theory... 16
4.3 Typical instrument and optical arrangement... 17
4.4 Measurement zone... 19
4.5 Application and sample presentation... 19
4.6 Off-line measurements... 20
4.7 In-line measurements... 20
4.8 Online measurements... 21
4.9 At-line measurements... 21
4.10 Scattering and detectors... 21
5 Operational Requirements and Procedures... 22
5.1 Instrument location... 22
5.2 Dispersion gases... 22
5.3 Dispersion liquids... 22
5.4 Sample inspection, preparation, dispersion and concentration... 22
5.5 Measurement... 24
5.6 Resolution and sensitivity... 26
6 Accuracy Repeatability and Instrument Qualification... 28
6.1 General... 28
6.2 Accuracy... 29
6.3 Instrument repeatability... 30
6.4 Method repeatability... 30
6.5 Accuracy under intermediate precision conditions... 31
7 Reporting of Results... 32
Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for
Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents.
This Document replaced GB/T 19077-2016 Particle Size Analysis - Laser Diffraction Methods.
Compared with GB/T 19077-2016, the major technical changes of this Document are as follows
besides the structural adjustments and the editorial modifications.
--- Add, change and delete some terms and definitions (see 3.1 of this Edition; 3.1 of the
2016 Edition);
--- Add, change and delete some symbols (see 3.2 of this Edition; 3.2 of the 2016 Edition);
--- Add the application descriptions for off-line measurement, on-line measurement, in-line
measurement, and at-line measurement (see Clause 4 of this Edition);
--- Add the measurement content and requirements such as robustness, sensitivity, and
resolution (see Clause 5 of this Edition);
--- Add a Clause on "Accuracy, Repeatability, and Instrument Validation" (see Clause 6 of
this Edition);
--- Delete the references of ISO 9276-4 (see Clause 7 of the 2016 Edition);
--- Delete the normative references of ISO 14488 and ISO 14887 (see 6.2.3.3 of the 2016
Edition);
--- Add the requirement for information on laser diffraction particle size distribution in the
test report (see 7.4 of this Edition);
--- Add the "Certified standard samples, standard samples and comparison parameters" (see
Annex H of this Edition).
This Document equivalently adopted ISO 13320.2020 Particle Size Analysis – Laser
Diffraction Methods.
Please note some contents of this Document may involve patents. The issuing agency of this
Document shall not assume the responsibility to identify these patents.
This Document was proposed by and under the jurisdiction of National Technical Committee
on Particle Characterization including Sieving Other Sizing Methods and Sieves of
Standardization Administration of China (SAC/TC 168).
Drafting organizations of this Document. Shanghai Institute of Measurement and Testing
Technology; National Institute of Metrology, China; Yanqi Lake Institute of Basic
Particle Size Analysis – Laser Diffraction Methods
1 Scope
This Document provides guidance on instrument qualification and size distribution
measurement of particles (e.g. powders, sprays, aerosols, suspensions, emulsions and gas
bubbles in liquids) in many two-phase systems through the analysis of their light-scattering
properties. It does not address the specific requirements of particle size measurement of specific
materials.
This Document is applicable to particle sizes ranging from approximately 0.1 µm to 3 mm.
With special instrumentation and conditions, the applicable size range can be extended above
3 mm and below 0.1 µm.
For spherical and non-spherical particles, a size distribution is reported, where the predicted
scattering pattern for the volumetric sum of spherical particles matches the measured scattering
pattern. This is because the technique assumes a spherical particle shape in its optical model.
For non-spherical particles the resulting particle size distribution is different from that obtained
by methods based on other physical principles (e.g. sedimentation, sieving).
2 Normative References
The provisions in following documents become the essential provisions of this Document
through reference in this Document. For the dated documents, only the versions with the dates
indicated are applicable to this Document; for the undated documents, only the latest version
(including all the amendments) is applicable to this Document.
ISO 9276-1 Representation of results of particle size analysis – Part 1.Graphical
representation
NOTE. GB/T 15445.1-2008 Representation of results of particle size analysis - Part 1.Graphical
representation (ISO 9276-1.1998, IDT)
ISO 9276-2 Representation of results of particle size analysis – Part 2.Calculation of
average particle size/diameters and moments from particle size distributions
NOTE. GB/T 15445.2-2006 Representation of results of particle size analysis - Part 2.Calculation
of average particle size/diameters and moments from particle size distributions (ISO 9276-2.2001,
IDT)
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 19077-2024 be delivered?Answer: The full copy PDF of English version of GB/T 19077-2024 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 19077-2024_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 19077-2024_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 19077-2024 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version GB/T 19077-2024?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 19077-2024 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of GB/T 19077-2024?A step-by-step guide to download PDF of GB/T 19077-2024_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as USD, Euro, KRW, JPY, AUD, CAD, RMB, IDR, INR, THB, HKD etc.).
Step 2: Search keyword "GB/T 19077-2024".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 | Steps 4~6 | Step 7 | Step 8 | Step 9
|