Views: 0 Author: Site Editor Publish Time: 2022-02-16 Origin: Site
What tests should be carried out on the silicone hose of peristaltic pump after production?
Laboratory peristaltic pump silicone hose adopts imported silicone raw material, vulcanized by platinum, and strictly standardized production. The pump hose will be strictly tested and inspected before leaving the factory. These silicone tubing designed for laboratory peristaltic pumps are very different from ordinary silicone tubing, mainly in terms of tear resistance, tensile properties, resilience and pump tubing dimensional tolerance control. So, what tests should be done before using silicone tubing from a peristaltic pump? Let's take a look at what we should test:
Before testing the size of the silicone hose of the laboratory peristaltic pump, you should first look at the appearance and pay attention to whether there are bubbles, impurities and black spots on the tube wall. Once it exists, it will affect its service life. Second, dimensional accuracy will directly affect the flow of the pump. The flow rate is mainly determined by the inner diameter of the hose. The larger the inner diameter, the greater the flow. Outside diameter or wall thickness will affect hose life. If the wall thickness exceeds normal tolerances, the hose will stiffen, affecting the pump body operation.
In order to test the wear resistance, fatigue resistance and resilience of the silicone hose of the laboratory peristaltic pump, it is recommended to adopt the limit test method, adjust the speed of the laboratory peristaltic pump to the maximum speed, transport weakly corrosive fluid, observe the flow change of the laboratory peristaltic pump every day, and start the pump continuously. The hose is not damaged and the flow change is not obvious, indicating that the hose has good elasticity, fatigue resistance and wear resistance
Testing the aging and corrosion resistance of silicone tubing for laboratory peristaltic pumps. Take a piece of sample tube, record its weight, inner and outer diameter, length and other parameters, soak the hose in a glass beaker, take out the hose after 72 hours, rinse and dry with water, re-measure its weight, inner and outer diameter, length and other parameters, observe its changes. Also, check the hoses for softening, brittleness, whiteness, and cracking. If there is any change, the hose is chemically affected by the liquid, indicating that the pump tubing is aging and has poor corrosion resistance. Each candidate pump tube sample should be put into the actual environmental conditions of the factory for a trial run and the test results closely observed. If the pump tube has no discoloration, expansion, cracks, loss of fluidity, or other deterioration after commissioning, it proves that the pump tube has good chemical stability
According to the actual application field of the laboratory peristaltic pump, such as FDA, lfgb, USP class 6, etc., determine the certification required for the silicone hose of the laboratory peristaltic pump. In conclusion, the silicone tubing for laboratory peristaltic pumps has excellent tear resistance, tensile properties, elasticity and fatigue resistance. The pump tube is manufactured in strict accordance with the tolerance requirements to ensure that the size of the pump tube meets the process requirements. The pump tube has high transparency, smooth inner wall and high cleanliness. It can transport most organic solvents, and is resistant to acid, alkali, aging, oxidation and low penetration within the concentration range of 30%. It can also transport high viscosity liquids and high dielectric constants.