How to choose a centrifuge

In the face of a wide variety of centrifuges on the market, it is not easy to choose a centrifuge that suits your needs. Here, Hunan Hercy Instrument Equipment Co., Ltd. introduces several basic selection methods:

According to the volume of the centrifuge: it can be divided into a floor-standing centrifuge and a desktop centrifuge. The floor-standing centrifuge is placed directly on the ground; the bench-top centrifuge is placed on the test bench; the larger the centrifuge, the larger the centrifugal chamber, then The capacity that can be centrifuged is also greater. For example: LR10M large capacity refrigerated centrifuge

According to the requirements of temperature control: it can be divided into two types: refrigerated centrifuge and normal temperature centrifuge. This depends mainly on the needs of the experimental samples. Some samples (such as proteins, cells, etc.) will be destroyed when the temperature is too high. Therefore, if you choose a refrigerated centrifuge, the temperature control range of the refrigerated centrifuge is generally -20. Between °C and 40 °C

According to the speed: it can be divided into low-speed centrifuge, high-speed centrifuge and ultra-high-speed centrifuge. Generally, it is a low-speed centrifuge below 10,000 rpm, a high-speed departure from 10,000 rpm to over 30,000 rpm, and a speed of more than 30,000 rpm. High-speed centrifuge (currently no domestic companies are involved in production).

According to different rotor classification: it can be divided into angular rotor and horizontal rotor. The angular rotor is at a fixed angle with the rotating shaft. After centrifugation, the sample is deposited on the bottom and side walls of the centrifuge tube. The horizontal rotor is vertical when it is stationary. After running, the basket is in a horizontal state, at right angles to the shaft, and is centrifuged with a horizontal rotor. Typically, the sample concentrates the sediment on the bottom of the centrifuge tube. Under normal circumstances, low-speed machines are equipped with more horizontal rotors. The use of high-speed centrifuges requires angle rotors to reach more than 10,000 rpm.

Therefore, you need to purchase a centrifuge, please tell us the following parameters: speed, whether with refrigeration, capacity (single tube capacity or total capacity) and your location and contact information. We will have a regional person in charge to contact you, and will introduce you in time to find out which one belongs to you!

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Yellow Waxy Corn Kernels

The most common waxy and sweet corn market, waxy corn has higher nutrient content than ordinary corn, containing 70-75% starch (and almost all amylose), more than 10% protein, 4-5% fat and 2 % Of multivitamins have more grains, VA, VB1, and VB2 than rice with the highest content of protein, fat and VB2. Yellow corn also contains carotenoids, such as rice and wheat. The molecular weight of waxy corn starch is more than 10 times smaller than that of ordinary corn. The starch makes glutinous rice sticky and softer than ordinary hard corn. Its digestibility is more than 20% higher than that of ordinary corn, and it is suitable for people with irregular teeth. At the same time, the content of amylose (a kind of polysaccharide) is very high, which is not suitable for diabetics.

Waxy corn is also called sticky corn. The grains have rough, waxy endosperm, similar to shiny, transparent grains, such as hard and dented corn. Its chemical and physical properties are controlled by a recessive gene located on chromosome 9. 100% of the starch in the endosperm is amylose.