Standard substance for chlorine content determination (chlorine standard sample)

Standard substance for chlorine content determination (chlorine standard sample)

Brand: Petrochemical Science Research Institute

Selling point and application: Produced by the Institute of Petrochemical Science, used for the determination of chlorine content in petrochemical products by microcoulometry method

Description: The following concentrations are optional: 0.5, 1.0, 3.0, 5.0, 10.0, 30.0, 50.0100, 300, 500, 1000 (mg/L)

The following concentrations of heavy oil can be selected: 10, 50, 100, 500, 1000 (ppm)

【 Storage conditions 】 Avoid light
Standard substance for chlorine content determination (chlorine standard sample)

The standard substance for chlorine content determination is a certified standard substance that has the ability to determine the chlorine element (Cl) content, has metrological traceability, and is used for the determination of total chlorine or organic chlorine content in the fields of petrochemicals, environment, materials, and food.

1、 Core Definition and Metric Attributes

The characteristic quantity value of this standard substance is the mass fraction or mass concentration of chlorine, commonly measured in mg/kg (ppm), μ g/g, and mg/L. The measurement value is determined by two or more independent and confirmed absolute measurement methods or comparison methods based on two or more principles, and is assigned a standard value after strict uniformity and stability evaluation by a legal metrology technical institution or certified laboratory. This standard value is accompanied by scientifically assessed measurement uncertainty, ensuring its reliability and international comparability as a measurement benchmark.

2、 Main functions and application scenarios

As a key inorganic element standard substance, its core function is to achieve value transfer from national standards to daily analysis, specifically applied to:

Calibration and validation of analytical methods: Used to calibrate various chlorine content measuring instruments (such as microcoulometers, ion chromatographs, X-ray fluorescence spectrometers, combustion ion chromatographs, etc.), and validate the accuracy and precision of relevant standard methods (such as ASTM D7359, SH/T 1757, GB/T 18612, UOP 779, etc.).

Product quality control and compliance assessment: used in petroleum refining (such as corrosive chlorine in crude oil, naphtha, and finished oil), chemical raw materials (such as impurity chlorine in ethylene and propylene), polymer materials (such as chlorine content in PVC), and environmental protection fields (such as chlorine content in wastewater and solid waste) to ensure that products meet specifications or regulatory limits.

Laboratory quality control and capability verification: as a quality control sample with known values, used to monitor the stability of laboratory testing processes; It is also the core material for inter laboratory comparison and capability verification activities.

Arbitration analysis and scientific research: providing objective and measurable benchmarks for trade disputes or scientific research.