SN/T 5295-2021 in English

VALID

Guidelines for basic statistics in chemical analysis laboratories

Issued on:2021-11-22
Implemented on:2022-06-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $490.00
$476.00

Standard No:	SN/T 5295-2021
Document status:	VALID
Title in English:	Guidelines for basic statistics in chemical analysis laboratories
Title in Chinese:	化学分析实验室基础统计指南
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2021-11-22
Implemented on:	2022-06-01
Professional Classification:	SN-Import&Export Inspection
Related Topics:	analytical laboratory Microanalysis Laboratory Organic Analysis Laboratory Geological laboratory analysis analytical laboratory Basic room Organic Geochemistry Laboratory Materials and Chemical Analysis Experiments Organic Analysis Experiment laboratory nebulization Chemical Laboratory Engineering Laboratory reproducibility Laboratory reproducibility Experimental statistics Analytical experiment Chemistry Lab Design Standard Chemistry Laboratory Series Environmental Chemistry Laboratory Peptide Chemistry Laboratory Organic Chemistry Laboratory Microanalysis Laboratory Statistical Analysis Chart Composition Analysis Laboratory Composition Analysis Laboratory Analytical Application Fundamentals Organic Geochemistry Laboratory Surface Analysis Laboratory Bioanalytical Laboratories and Central Laboratories Laboratory chemical analysis testing Organic and Inorganic Analysis Laboratory Inorganic Analysis Laboratory Laboratory Gas Analysis Chemistry Laboratory Series Steel Analysis Laboratory laboratory microanalysis Laboratory Analysis Equipment Chemical Analysis Laboratory Chemical Analysis Metrology Surface Analysis Laboratory Chemical Analysis Laboratory chemistry lab temperature Analytical Laboratory and Analysis Experimental Statistics Laboratory Analysis Equipment Secondary analysis room for chemical laboratoriesfire-resistant Secondary Analytical Laboratory Experimental standard Chemical Analysis Central Laboratory CSR Laboratory Mineral Laboratory Analysis nitrogenlaboratoryanalytical Laboratory Statistical Analysis Microanalysis laboratory management system Chemistry Lab Program Analytical experiment Wood Analysis Laboratory Chemical Analysis Experimental Instruments Laboratory Data Analysis automatic laboratory analysis Analytical Laboratory Equipment Chemistry Lab Requirements chemical laboratory deodorant Laboratory Management System Analysis p4 lab guide chemical preparation laboratory National Laboratory Analysis basic guide p4 lab guide Chemistry Lab Design Chemistry Lab Program During chemical experiments Laboratory Management Analysis laboratory analysis work Chemistry Lab Requirements Analytical Chemistry Laboratory Management statistics lab chemical laboratory analysis Laboratory Statistical Methods laboratory statistics laboratory chemicals Automated Lab Statistics laboratory statistics Rapid Laboratory Design Statistical Analysis Fast Lab Performs Statistical Analysis automated laboratory design statistical analysis Automated statistical analysis of laboratory items automated laboratory performance statistical analysis testing laboratory chemical analysis Rapid Laboratory Statistical Analysis chemistry lab temperature Analytical Laboratory Equipment sub-laboratory Atomizer laboratory Chemical Laboratory System foreign chemical laboratory Chemical laboratory fire Used Chemistry Lab Experimental Statistics laboratory basics Analytical testing central laboratory Chemical Laboratory Standard Laboratory Analysis Wood Analysis Laboratory Standard Laboratory Analysis Chemical laboratory fire laboratory basics Inorganic analysis experiment Non-computerized laboratory management system Analytical testing central laboratory Chemical Laboratory Monitoring laboratory nebulization Chemical Analysis Experiment Oil Analysis Laboratory used chemical experiment Chemical Analysis Testing Laboratory Pharmaceutical Laboratory Baihua score basis Guide to Laboratory Methods Analytical National Laboratories Public Chemistry Laboratory Steel Analysis Laboratory Bioanalytical Laboratory Central Laboratory Atomization core laboratory chemical laboratory Analysis experiment Basics of Analytical Testing On-site compositional analysis laboratory Analytical Laboratory Regulations Foreign chemical experiments Chemistry Laboratory Procedures Chemistry Lab Items Chemistry Lab Requirements Chemical Analysis Laboratory Composition Analysis Laboratory chemical laboratory Range analysis chemical experiment laboratory analysis work Domestic trace analysis laboratory Pharmaceutical Laboratory Range analysis chemical experiment deuterium experiment Laboratory Gas Analysis Laboratory flora analysis Basic Central Laboratory Chemistry Lab Implementation Chemical laboratory instrument classification Water quality laboratory analysis system Standard laboratory CSF analysis Translational Medicine Laboratory Construction Guide ELISA statistical analysis nanda lamda laboratory Digestion of food physical and chemical analysis experiments Commonly used separation methods of chemical components in laboratories Standardized analysis room Optical laboratory darkroom Standardized analytical laboratory High school chemistry laboratory equipment Standards for water used in chemical laboratories Chemokine Basic Experimental Methods Standardized design of chromatographic analysis chamber Chemistry Standardization Laboratory Laboratory electrochemical testing Electrochemical Testing Laboratory Standards Laboratory biochemical analysis methods for biochemical testing

Introduction

Analysis of the core content of the standard

This standard systematically regulates the statistical processing methods of measurement data in chemical analysis laboratories, including 6 major technical modules: basic statistical methods, orthogonal experimental design, method validation, quality control, appendix cases and statistical tables. It is suitable for method development, validation and daily quality control.

Key Technical Points

Statistical Methods	Application Scenarios	Judgment Criteria
Grubbs Test	Outlier Detection for Single Group Data	α=0.05/0.01 Critical Value
Cochran Test	Multi-group Variance Consistency Test	C value＞critical value to determine outliers
Orthogonal Experiment Variance Analysis	Multi-factor Optimization Experiment	F value＞F_critical is significant

Key indicators of method verification

Precision verification

Calculated by repeatability standard deviation (s_r) and reproducibility standard deviation (s_R):

s_R = √(s_L² + s_r²)

The example shows that the lead content of PVC plastic is s_r=3.10mg/kg and s_R=7.27mg/kg (Appendix C)

Accuracy verification

Using t-test or critical difference (CD value):

CD = √[2.8(s_R² - s_r²(1-1/n))]

In the DBP detection case, |bias|=46mg/kg＜CD value 366mg/kg (Appendix D)

Implementation suggestions

Data preprocessing: Normality test (GB/T 4883) and outlier elimination must be performed
Method development stage: Orthogonal test method (L₉(3⁴)) is preferred to optimize parameters
Quality control chart update: Control limits can be established only after accumulating ≥20 sets of valid data
Matrix Effect Assessment: Determining Inhibition/Sensitization Effects by Slope Difference Test (F/t Test)

Comparison of Standard Evolution

Version	New Content	Technological Breakthrough
2021 Edition	Orthogonal Experiment Design Chapter	Introduction of Combination of Range Analysis and Variance Analysis
Historical Versions	Basic Statistical Methods	Only t-test/F-test

More samples: GB 50021-2001(2009) JJG 21-2008 DL/T 368-2010

Sample only — not a preview of SN/T 5295-2021

Loading PDF document...

Error loading PDF. Please make sure the file is valid and try again.

We also recommend

SN 0283-1994 in English

\"Method for Inspection of Dichlorodipyridinol Residues in Exported Poultry Meat\"
1994-02-18
SN/T 4718-2016 in English

Rules for the quarantine of seedling of Acer Linn.for entry
2016-12-12
SN/T 3193.7-2016 in English

Technical requirements for the inspection of light industry complete set of equipment for import - Part 7: Wood processing equipment
2016-06-28
SN/T 3443-2012 in English

Detection and identification of Aegilops tauschii Coss.
2012-12-12
SN/T 0244-1994 in English

\"General Rules for Inspection and Certification of Imported Mechanical and Electrical Instruments\"
1993-08-01