How to choose a centrifuge manufacturer with good performance and guaranteed after-sales
Centrifuges are widely used in biomedicine, petrochemical, agriculture, food hygiene and other fields. It utilizes the difference in the sedimentation speed of different substances in the centrifugal force field to realize the analysis and separation of samples. After the 1970s, the high-speed centrifuge has developed rapidly. Because of its simple structure, low cost and small size, the desktop high-speed centrifuge has quickly become a routine instrument in the laboratory. Today, centrifuges and centrifugal technology are still developing and improving. Brushless motors, multi-function, automation, microcomputer control, focusing on safety and standards, and improving the quality and types of drums are still the future development directions of high-speed centrifuges.
High-speed centrifuge is a high-tech product that integrates multiple disciplines and multiple technologies. There are many manufacturers and products, so multiple inspections should be carried out when selecting models.
1. Material characteristics
Material characteristics include solid phase particle, density, liquid phase density, viscosity, suspension concentration, etc. For the selection of centrifuges and filters, it is necessary to consider the comprehensiveness, as well as the sedimentation and filtration characteristics of the material.
The model should be determined according to the separation task and material characteristics, such as drum, speed, capacity, temperature, etc. Generally, high-speed should not be used for low-speed, and special-purpose centrifuges should not be used for general-purpose centrifuges. Both high-speed and low-speed, large-capacity and microcentrifuge characteristics , can be equipped with a variety of drums, so it is very popular in scientific research laboratories, and the price is relatively high.
3. Technical parameters
After the model is determined, the technical data, technical performance, maintainability and safety of the product should be further investigated. Stable reliability. Factors such as safety standards, price, styling and appearance. Brushless motor is more environmentally friendly, maintenance-free is better than carbon brush motor; microcomputer control is better than discrete component control; controlling and displaying the temperature of the sample is more practical than controlling and displaying the cavity temperature; More is better than less; wide rotor selection range is better than narrow; lift acceleration is better than slow, these are the parameters that need to be paid attention to.
High-speed centrifuges produce large centrifuges during high-speed operation. Therefore, whether it is a high-speed centrifuge or a low-speed centrifuge, the safety measures are the more perfect, the better the automation procedures. The more standard certification projects, the better. Okay;
5. Rotor selection
It is not advisable to buy more drums, because the life of the drum is limited by the number and time of centrifugation, and the drum is very expensive, so the commonly used drums are mainly purchased according to the experimental requirements.
6. After-sales service
The after-sales service of the manufacturer is also the main factor of the inspection. The centrifuge maintenance is highly technical, not only the maintenance problem, but also the quality and safety issues. After the centrifuge is overhauled or the maintenance of safety components is required, it should be measured in time. Sensitivity, speed and temperature accuracy, electrical safety and electromagnetic compatibility, etc., users should be reminded to pay special attention to this point.