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JJF 1696-2018 English PDF

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JJF 1696-2018: Program of Pattern Evaluation of Gel Permeation Chromatographs
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1696-2018	English	419	Add to Cart	4 days [Need to translate]	Program of Pattern Evaluation of Gel Permeation Chromatographs	Valid	JJF 1696-2018

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Basic data

Standard ID	JJF 1696-2018 (JJF1696-2018)
Description (Translated English)	Program of Pattern Evaluation of Gel Permeation Chromatographs
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A61
Word Count Estimation	18,163
Date of Issue	2018-02-27
Date of Implementation	2018-05-27
Regulation (derived from)	AQSIQ Announcement No. 26 of 2018
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine

JJF 1696-2018: Program of Pattern Evaluation of Gel Permeation Chromatographs

---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.
Program of Pattern Evaluation of Gel Permeation Chromatographs National Metrology Technical Specification of the People's Republic Gel Chromatography Type Evaluation Outline Published on.2018-02-27 2018-05-27 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Gel chromatograph Type evaluation outline Focal Point. National Physical and Chemical Metrology Technical Committee Drafted by. China Institute of Metrology This specification entrusts the National Physical and Chemical Measurement Technical Committee to explain The main drafters of this specification. Yan Xin (China Institute of Metrology) Participate in the drafters. Xiu Hongyu (China Institute of Metrology)

Introduction (II) 1 Scope (1) 2 References (1) 3 Overview (1) 4 Legal management requirements (1) 4.1 Unit of measurement (1) 4.2 Accuracy requirements (2) 4.3 External Structure and Signs (2) 5 Measurement requirements (2) 5.1 Column oven temperature stability (2) 5.2 Pump Flow Stability (2) 5.3 Baseline noise (2) 5.4 Baseline Drift (2) 5.5 Instrument indication error (2) 5.6 Instrument measurement repeatability (2) 6 General technical requirements (3) 6.1 Appearance and preliminary inspection (3) 6.2 Influence of ambient temperature on indication error (3) 6.3 Instrument Stability (3) 7 type evaluation item list (3) 8 Provide the number of prototypes and how to use the prototype (4) 8.1 Number of prototypes provided (4) 8.2 How to use the prototype (4) Test methods and conditions of 9 type evaluation items and data processing and qualification criteria (4) 9.1 Environmental conditions for metrological performance (4) 9.2 Preparation before the test (4) 9.3 Metrological performance test (4) 9.4 General technical requirements test (8) 10 Measuring instruments used in the test items (9) Appendix A Type Evaluation Original Record Format (11)

Introduction

This type of evaluation outline is JJF 1015-2014 "General Specification for Type Evaluation of Measuring Instruments" and JJF 1016- 2014 “Guidelines for the Preparation of Types of Measuring Instruments for Evaluation of Instruments” are formulated for basic norms. The technical indicators and test methods of this type evaluation outline refer to JJG342-2014 "Gel Chromatograph". This type of evaluation outline is the first release. Gel Chromatography Type Evaluation Outline

1 Scope

This type evaluation outline is applicable to the type evaluation of a gel chromatograph (GPC) with a classification code of 46222000.

2 reference files

This specification refers to the following documents. JJG342-2014 Gel Chromatograph For dated references, only dated versions apply to this specification; undated quotations The latest version (including all amendments) applies to this specification.

3 Overview

The gel chromatograph (hereinafter referred to as the instrument) is a size exclusion method liquid chromatography, the detection principle is as a high polymer After the solution flows through the column packed with the porous material packing, the polymer samples are sorted in order of molecular size from largest to smallest. Leave and detect the signal of the sample through the detector. Gel chromatography is a measure of the relative molecular mass of polymers. Quantity method. The relative molecular mass and relative molecular mass distribution of the sample to be tested can be obtained by instrumental spectra and calibration curves. Got it. The relative molecular mass distribution is characterized by a polydispersity coefficient. The instrument usually consists of a solvent storage tank, a solvent pump system, an injector, a column, a detector, a waste liquid recovery device, and a number. According to the processing system and other components. The difference detector and the ultraviolet detector are detected by a comparison test using a calibration curve. Relative molecular mass, while laser light scattering detectors and viscosity detectors are absolute molecules detected by direct measurement quality. The main key components of the instrument are solvent pump, column oven and detector system. The main performance indicators are listed in Table 1. Table 1 Main key components of the instrument and its main performance indicators Serial number name main performance indicator remarks

1 Solvent pump

Flow range (0.1~3.0) mL/min, Flow stability ≤1% Low speed stable constant current pump

2 column thermostat

Temperature control range (15~40) °C, temperature control accuracy 1 °C, Temperature stability ≤ 1 ° C 3 detector system baseline noise, baseline drift

4 Legal management requirements

4.1 Unit of measurement Instruments should be in legal units of measurement and are listed in Table 2.

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