TOC sample bottles

TOC sample bottles are commonly made of the following materials:
Glass:
Borosilicate glass: it has excellent chemical and thermal stability, can withstand high temperature and acid and alkali and other chemical substances, suitable for a variety of samples collection and storage, can be used to contain all kinds of water samples, chemical reagents, and so on. For example, in water quality monitoring, it can be used to collect surface water, groundwater, sewage and other samples for TOC detection; in the pharmaceutical industry, it can be used to contain purified water, water for injection for quality control.
Quartz glass: extremely high purity, excellent optical properties and chemical stability, good light transmission in the ultraviolet region, suitable for high-precision optical analysis of samples or the need for special conditions for TOC detection, such as in some high-end scientific research experiments, for the detection of samples with high sensitivity to light or very low impurity content requirements.
Plastic material:
Polypropylene (PP): good chemical stability, corrosion resistance and mechanical strength, light weight and relatively low price, unbreakable, easy to carry and use, suitable for routine TOC sample collection and short-term storage, commonly used in some of the purity of the sample is not particularly high requirements of environmental monitoring, industrial wastewater testing and other fields.
Polytetrafluoroethylene (PTFE): chemically inert, almost does not react with any chemical substances, has excellent corrosion resistance, high temperature resistance and low coefficient of friction, can effectively prevent the adsorption and contamination of the sample, suitable for holding a variety of strong corrosive, high purity or sensitive to impurities of the sample, such as in some high-precision analytical testing, used for the collection and storage of samples containing a high concentration of acids, alkalis, organic solvents and so on. Sample.
Composite material:
Glass fiber reinforced plastic: combining the high strength of glass fiber and the good processing performance and chemical stability of plastic, with high strength and toughness, while lighter in weight, suitable for some need to be used in the more severe environmental conditions or the strength of the sample vials required for higher occasions, such as in the field environmental monitoring, industrial field sampling and other scenarios, to better protect the samples from the influence of external factors.
Coated composites: By applying a special coating to the surface of a substrate such as glass or plastic, the surface properties of the vial can be improved, such as increasing chemical stability and reducing sample adsorption. For example, Sievers’ DUCT vials are glass vials with a special internal coating that can be used for simultaneous conductivity and TOC sampling, avoiding problems such as sample leaching and protein adsorption.