名称：毛细管柱

固定相：键合聚苯乙烯-二乙烯苯

型号：HH-PLOT-Q

规格：25m*0.53mm*10um

材质：石英弹性毛细管

应用：  色漆和清漆 涂料中水分含量的测定 气相色谱法

1、范围 本标准规定了一种使用气相色谱测定水性涂料及其原材料中水分含量的方法。该测试方法的优选工作范围为水分的质量分数15%-90%，但该方法也可以在此范围之外使用。 2、主要技术内容 本标准主要针对涂料中的水分含量测定方法进行介绍。主要技术内容包括：气相色谱仪系统（包括进样系统、柱箱、检测器、毛细管柱、注射器、数据处理、样品瓶、气体过滤器、载气）具体要求；内标、稀释溶剂、水、分子筛等试剂和材料的要求、处理方法及使用方法；样品取样、气相色谱仪系统条件优化、稀释溶剂中水分含量、校准、样品制备（称样量要求）、水分含量测定等主要测试步骤。



Paints and varnishes - Determination of moisture content in coatings - Gas chromatography
Paints and varnishes - Determination of moisture content in coatings - Gas chromatography Details:

Name: capillary column



Stationary Phase: Bonded Polystyrene-divinylbenzene

Model: HH-PLOT-Q

Specifications: 25m*0.53mm*10um

Material: Quartz elastic capillary

Applications: Paints and varnishes Determination of moisture content in coatings Gas chromatography

1. Scope This standard specifies a method for the determination of moisture content in water-based coatings and their raw materials using gas chromatography. The preferred working range for this test method is 15%-90% moisture by mass, but the method can also be used outside this range. 2. Main technical content This standard mainly introduces the method for the determination of moisture content in coatings. The main technical contents include: specific requirements for gas chromatograph system (including sampling system, column box, detector, capillary column, syringe, data processing, sample bottle, gas filter, carrier gas); internal standard, dilution solvent, water, Requirements for reagents and materials such as molecular sieves, processing methods and usage methods; sample sampling, optimization of gas chromatograph system conditions, moisture content in diluting solvents, calibration, sample preparation (sample weighing requirements), moisture content determination and other main test steps.