Centrifuge tubes are a common laboratory consumable, mainly used in conjunction with centrifugal dewatering machines. The test liquid is loaded into these tubes and then put into the centrifuge for filtration.

According to the different materials, the whole can be divided into plastic and laminated glass, plastic centrifugal tube used more, can be divided into PP, PC, PS, etc., according to the different must, the manufacturer will select different plastic raw materials to carry out the production.

According to its size, it is divided into 1.5mL, 1mL, 5mL, 10mL, 15mL, 50mL, etc. Domestic centrifugal tube is generally a number of specifications and models, the use of more is 10mL and 50mL. If your centrifugal dewatering machine is equipped with 30mL or other sizes of centrifuge tubes, you need to consider the imported ones. In addition, centrifuge tubes are available with rounded or pointed bottoms, and with screw caps or insert caps. Screw-cap tubes contain a more detailed scale, while insert-cap tubes have only an overall volume marking.

Plastic and laminated glass centrifuge tubes are commonly used in laboratories. Plastic tubes are more commonly used because laminated glass tubes cannot be used in high speed or ultra high speed centrifuges. Plastic centrifuge tubes can be made of PP (polypropylene), PC (polycarbonate), PE (high pressure polyethylene), etc. PP tubes have relatively good characteristics. Plastic centrifuge tubes are transparent or transparent in color, so you can visualize the filtration status of the test specimen, but they are more prone to deformation and are less resistant to corrosion by solvents, so their service life is shorter. Therefore, centrifuge tubes are often purchased by laboratories. The following is an introduction to each of the various materials.

PP (polypropylene): Transparent color, good organic chemical and temperature reliability, but becomes brittle at ultra-low temperatures, so don't filter at 4°C or below.

PC (polycarbonate): good clarity, strength, can be sterilized at high temperatures, but not resistant to strong oxidants and some solvents such as ethanol. The key is used for rapid filtration above 50,000 rpm.

PE (high pressure polyethylene): not fully transparent. And toluene, glacial acetic acid, sulfuric acid, etc. does not reflect, relatively smooth, very easy to become loose at high temperatures.

PA (acrylic resin): These materials are polymers of PP and PE materials, transparent color, very smooth physical properties, single heat-resistant.

PS (polyethylene): Transparent, strong, smooth to most of the solution, but will be a variety of organic compounds leaching, mostly used in low-speed gear filtration, and is generally a one-time use.

PF (polyfluoroethylene): Transparent color, capable of ultra-low-temperature applications, if it is -100 ℃ -140 ℃ under the test of the natural environment, you can use this material centrifuge tube.

CAB (methyl cellulose butyl acetate): fully transparent, can be used to dilute acid, alkali, salt, and its ethanol, sugar gradient direction measurement.