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JJF 1321-2011: Calibration Specification for Elemental Analyzers
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
JJF 1321-2011	English	399	Add to Cart	3 days [Need to translate]	Calibration Specification for Elemental Analyzers
JJF 1321-1990	English	239	Add to Cart	2 days [Need to translate]	Operating Technical Norm of Primary Standard for Spectral Radiance and Irradiance in the Range of 250~2500 nm

JJF 1321-2011: Calibration Specification for Elemental Analyzers

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Calibration Specification for Elemental Analyzers People's Republic of China National Metrology Technical Specifications Elemental analyzer calibration specification Issued on. 2011-11-14 2012-02-14 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Elemental analyzer calibration specification ElementalAnaly zers This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on November 14, 2011, and from From February 14, 2012 into effect. Focal point. the National Technical Committee stoichiometric physical The main drafting units. China Institute of Metrology Participated in the drafting unit. Jilin Institute of Metrology Qinhuangdao Institute of Metrology This specification stoichiometric commissioned National Technical Committee is responsible for the physical interpretation The main drafters of this specification. Heya Juan (China Institute of Metrology) Zhao (China Institute of Metrology) Drafters participate. An Weidong (Jilin Institute of Metrology) He Hai Hong (China Institute of Metrology) Zhang Rui (Qinhuangdao Metrology Institute)

table of Contents

1 Scope (1) 2 Overview (1) 3 Metrological characteristics (1) 3.1 indication error and repeatability (1) 3.2 Repeatability weighing scales (2) Calibration Condition 4 (2) 4.1 laboratory conditions (2) 4.2 Standard calibration equipment and materials (2) 5 calibration items and calibration methods (3) 5.1 Indication error (3) 5.2 Measurement repeatability (3) 5.3 repeatability weighing scales (3) 6 Calibration Results (3) 7 Recalibration interval (4) Appendix A calibration certificate (within the page) reference format (5) Appendix B elemental analyzer calibration records reference format (6) Appendix C elemental analyzer calibration uncertainty assessment (8) Elemental analyzer calibration specification

1 Scope

This standard applies to the use of infrared, thermal conductivity method, titration, absorption, power law (also known as Coulomb's law), which are not With the principle of carbon (C), hydrogen (H), nitrogen (N), oxygen (O), sulfur (S) and other elements of the elemental analyzer Calibration. This specification does not apply to the use of infrared analysis principle of carbon and sulfur analyzer, and total sulfur in coal analyzer calibration.

2 Overview

Determination of carbon (the C), the type of instrument hydrogen (H), nitrogen (the N), oxygen (O), sulfur (S) element number, basic The measurement principle is the presence of a catalyst (oxidant) in the presence of (hot) conditions, the samples of the measured elements oxidize Respective gas, based on the physical and chemical properties of the generated gas, select the appropriate analytical methods to detect. Commonly used detection side Law infrared, thermal conductivity method, titration, absorption, power law (also known as Coulomb's law) and the like. Kjeldahl instrument is the proteins in the sample is decomposed under catalytic heating, combine ammonia with sulfuric acid to produce raw Into ammonium sulfate, and then distilled ammonia free alkaline, with boric acid absorption in sulfuric or hydrochloric acid standard titration solution titration, root According to the acid consumption is multiplied by the conversion factor, is the protein content. Carbon (C), hydrogen (H), nitrogen (N), oxygen (O), sulfur (S) element analyzer (hereinafter referred to as equipment) generally By the host control system, an integral part of the detection system, a data processing system, in addition comes with sample preparation, weighing (points Analytical balances) and other equipment (Figure 1). Figure 1 Schematic elemental analyzer

3 Metrological characteristics

3.1 indication error and repeatability Instrument indication error and repeatability of the technical indicators in Table 1. ...