JJG 700-2016 English PDF

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JJG 700-2016: Verification Regulation of Gas Chromatograph
Status: Valid

JJG 700: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 700-2016	439	Add to Cart	4 days	Verification Regulation of Gas Chromatograph	Valid
JJG 700-1999	719	Add to Cart	3 days	Verification regulation of gas chromatograph	Obsolete
JJG 700-1990	719	Add to Cart	5 days	Verification regulation of gas chromatograph	Obsolete

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Basic data

Standard ID: JJG 700-2016 (JJG700-2016)
Description (Translated English): Verification Regulation of Gas Chromatograph
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A61
Word Count Estimation: 19,197
Date of Issue: 2016-06-27
Date of Implementation: 2016-12-27
Older Standard (superseded by this standard): JJG 700-1999
Regulation (derived from): State Administration of Quality Supervision, No.66 of 2016
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine

JJG 700-2016: Verification Regulation of Gas Chromatograph

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Determination of gas chromatograph) National Metrological Verification Regulation of the People's Republic of China Gas Chromatograph 2016-06-27 released 2016-12-27 implementation State Administration of Quality Supervision, Inspection and Quarantine issued Determination of gas chromatograph of GasChromatographs Replacing JJG 700-1999 Responsible unit. National Physical and Chemical Metrology Technical Committee Drafting unit. China Institute of Metrology This procedure entrusts the National Physical Chemistry Metrology Technical Committee to explain The main drafters of this procedure. Hu Shuguo (China Institute of Metrology) Kim Meilan Cover liang (China Institute of Metrology) Participate in the drafters. He Haihong (China Institute of Metrology)

table of Contents

Introduction (Ⅲ) 1 Scope (1) 2 Overview (1) 3 Measurement performance requirements (1) 4 General technical requirements (2) 4.1 Appearance (2) 4.2 Air system (2) 5 Measuring instruments (2) 5.1 Test conditions (2) 5.2 Standard substances and equipment for testing (2) 5.3 Verification Project (3) 5.4 Verification method (3) 5.5 Processing of Verification Results (8) 5.6 Test cycle (8) Appendix A Calibration of carrier gas flow rate (9) Appendix B Gas Reference Molecule Fractional and Concentration Conversion (10) Appendix C Verification Record Format (11) Appendix D Certificate of Verification/Verification Result Page Format (12)

Introduction

This procedure is based on JJF1002-2010 "national measurement procedures for the preparation of rules", JJF1001-2011 "pass Metrological terms and definitions ", JJF1059.1-2012" Measurement Uncertainty Assessment and Representation "and GB/T 30431- 2013 "laboratory gas chromatograph" as the basis and basis for the JJG 700-1999 "gas chromatograph" for repair Set out. Compared with JJG 700-1999, in addition to editorial changes, the main technical content of this program changes as follows. - Flame photometric detector (FPD) baseline noise and drift from the original ≤5pA and ≤0.1nA, both To ≤ 0.5nA (see Table 1 in Chapter 3); --- Increased qualitative repeatability, removing the attenuator error (see Table 1 in Chapter 3); - Added the electronic capture detector to Hz as the output signal for noise and drift test indicators (see Chapter 3 Table 1); --- The purity of the carrier gas is modified to meet the requirements of the instrument, generally not less than 99.995% (see 5.1.3); --- Microiner increases the maximum allowable error (see 5.2.2); --- Platinum resistance thermometer increases the temperature range and the maximum allowable error (see 5.2.3); - The flowmeter increases the measuring range and grade (see 5.2.4); --- General-purpose detector performance test conditions, TCD and FID gas test oven temperature set by the original 30 ° C and 50 ° C to 50 ° C and 80 ° C (see 5.4.4 Table 4); - The electron capture detector (ECD) detector temperature is changed from 230 ° C to 250 ° C (see 5.4.4 Table 4); - The number of times of injection and the number of times of carrier gas flow measurement were changed from 6 to 7 (see 5.4.2); --- Thermal conductivity detector (TCD) Detection limit of the gas used when the standard molar fraction from the original 1% mol/mol to (100 ~ 10000) μmol/mol (see 5.2.1 Table 2); --- Flame Ionization Detector (FID) Detection limit The molar fraction of the gas used in the test is determined by the original (10 ~ 10000) μmol/mol (see Table 5.2.1, Table 2); - the calibration part of the original A & lt;/RTI & gt; A micro-syringe is removed and the original Appendix B is changed to Appendix A; --- change the column temperature in the formula of carrier gas flow in Appendix A to the detector temperature; - increase the molar fraction of the gas reference material and the concentration conversion formula (see Appendix B). The previous versions of this order are released as follows. --- JJG 700-1990; --- JJG 700-1999. Determination of gas chromatograph

1 Scope

This procedure is suitable for use with thermal conductivity detector (TCD), flame ionization detector (FID), flame photometric detection (FPD), electron capture detector (ECD), nitrogen and phosphorus detector (NPD) gas chromatograph of the first test, Follow-up inspection and use of inspection.

2 Overview

Gas chromatograph (hereinafter referred to as the instrument) is the carrier gas from the sample into the column, the use of the sample in the color The distribution of gas and stationary phases in the column and the separation coefficient are separated and detected by means of a detector. Device. Qualitative and quantitative analysis was performed based on the retention time and response values of each component. The instrument consists of airway system, injection system, separation system, temperature control system, detection system and data processing system composition.

3 Measurement performance requirements

The metrological performance of the instrument shall comply with the requirements in Table 1. Table 1 metrological performance requirements for gas chromatographs Verification project Measurement performance requirements TCD ECD * FID FPD NPD Stability of carrier gas flow rate (10min) ≤1% ≤1% - - - Oven temperature stability (10min) ≤0.5% Program temperature repeatability ≤ 2% Baseline noise ≤ 0.1mV ≤0.2mV ≤1pA ≤0.5nA ≤1pA Baseline drift (30min) ≤ 0.2mV ≤ 0.5mV ≤ 10pA ≤ 0.5nA ≤ 5pA Sensitivity ≥800mV mL/mg - - - - Detection limit ≤ 5pg/mL ≤ 0.5ng/s ≤ 0.5ng/s (sulfur) ≤ 5pg/s (nitrogen) ≤0.1ng/s (phosphorus) ≤10pg/s (phosphorus) Qualitative repeatability ≤1% Quantitative repeatability ≤3% * Baseline noise ≤5Hz, baseline drift (30min) ≤20Hz when the instrument output signal is in Hertz (Hz). ......

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