Detailed introduction of sample bottle and material

The coefficient of linear expansion means that every degree of temperature changes, the length of the glass changes. The lower the coefficient of linear expansion, the greater the temperature change the glass can withstand. The classification of laboratory glass is established by the USP based on its water resistance.


[USP TYPE, a grade, borosilicate hydrochloric acid glass] is a chemically inert glass, widely used in laboratories, especially chromatographic analysis applications. Class I glass is mainly composed of silicon and oxygen, and contains traces of boron and sodium. It has low dissolution and a linear expansion coefficient of


[USP TYPE, b-grade, borosilicate-hydrochloric acid glass] is mainly composed of silicon and oxygen, and contains trace amounts of boron, sodium and more alkali metals than a-grade glass, but it can still meet laboratory use, all white The glass is B grade glass, and its linear expansion coefficient is


[Silanized or deactivated glass] is a borosilicate hydrochloric acid glass that has undergone a deactivation treatment of organosilanization on the glass. The glass surface has strong hydrophobicity and inertness. It is suitable for pH-sensitive compounds, traces Quantity analysis and long-term sample storage.


[Threaded sample bottle]: Provides a bottom evaporation, reusable, less damage to the hand than the crimp cap, and does not require additional tools. The screw cap sample bottle is distinguished by different thread specifications This specification is defined by the Glass Packaging Association (GPI). It consists of screw-top sample bottles, such as:-The outer diameter of the screw-top of the sample bottle is approximately mm, and the type of thread is. The price of the screw-top sample bottle and cap gasket is higher than that of the crimp bottle.


[Threaded sample bottle cap gasket]: There is a perforated cap designed for automatic sampling, a solid cap designed for sample storage, and an integrated PP cap is optional. This piercable screw cap is a single inlet Sample design, no cover pad assembly is required, which can save experiment preparation time,


【Clamp-top sample bottle】It is sealed with an aluminum cap, which is relatively cheap. When properly clamped, it can be used for long-term storage to provide a seal. The clamp cap cannot be reused and requires a relatively large force to be clamped.


[Capping device]: The cover device is required to seal and the decapper to remove the sealing cover. Sealers and decappers suitable for different specifications of aluminum caps, including adjustable precision cappers are available. The adjustable manual capper provides an adjustable stop point on the handle to ensure that each pressure The tightness of the cover is the same. Adjusting the screw in the metal jaws can change the jaw depth. The correct jaw depth is important, because too tight jaws can cause the septum to deform toward the center, damaging the needle and Teflon and the correct jaws. Large holes and loose jaws will cause the septum to fall off or the sample to volatilize. The manual capper can quickly remove the aluminum cap with just one grip. The design of the capper is similar to that of pliers, providing an economical Choose, when the sample contains harmful substances, a decapper is needed, because the use of the decapper is not easy to cause leakage


[Bayonet sample bottle]: Because the mouth of the bottle is thick, it will not be damaged when uncapped. It can be used with a bayonet cap or a bayonet cap. When using a bayonet cap, there is no need to use tools, because its tightness is not as good as a pliers It is recommended for short-term sample storage or non-volatile samples.


[Capping bottle]: For Water’s HPLC autosampler or other autosamplers that don’t need a manipulator to grab sample vials, it is a more economical choice than screw-top vials. Most cappers are compatible with A PE (polyethylene) bottle cap with a star-shaped cut and easy to puncture is sold together.