Sample bottles come with three types of caps: crimp caps, snap caps, and screw caps. Each sealing method has its own advantages. Crimp Caps Crimp caps compress the septum between the bottle rim and the crimped aluminum cap. This provides excellent sealing, effectively preventing sample evaporation. The position of the...

Thin-Layer Chromatography (TLC) is based on the affinity separation of compounds in a mixture. It is a widely used universal separation method for sample identification and quantification. TLC can be employed to analyze substances from various categories, including pesticides, steroids, alkaloids, lipids, nucleic acids, glycosides, sugars, and fatty acids. In...

1. Introduction and Applications of Melting Point Capillary Tubes: Melting point capillary tubes are small glass tubes primarily used for determining the melting point of substances. In experiments, the substance to be tested is loaded into the melting point capillary tube, heated to melt and then cool to solidify, and...

Holding Test Tubes: One of the fundamental purposes of a test tube rack is to stably hold test tubes. This ensures that test tubes do not slide or tip over during experiments, guaranteeing the safety and reliability of the experiment. Heating Test Tubes: Test tube racks are also used for...

Test tube racks are commonly used instruments in laboratories, facilitating experimental operations by providing support for test tubes. However, incorrect installation can lead to tilted or broken test tubes, affecting the accuracy and safety of experiments. Therefore, proper installation of test tube racks is crucial. Here are some steps and...

The selection of pipette tips is crucial for the accuracy and efficiency of experiments. Here are some recommendations for choosing pipette tips: 1. Material: Polypropylene Plastic: Most pipette tips are made of polypropylene plastic, known for its chemical inertness and wide temperature range. Ensure the selection of high-quality tips, preferably...