What are the differences between a bacterial collector and a membrane filter?

The bacterial collection device is a supporting facility for disposable fully enclosed bacterial culture equipment. The test sample is subjected to positive pressure filtration through the directional peristaltic pressure of the bacterial collection device and cultured in the filter to test whether the test sample contains bacteria. The test sample is continuously injected into the bacterial culture chamber through the injection pipeline. Using the downward pressure formed in the bacterial culture chamber, it is filtered through a microporous membrane, and any microorganisms that may exist in the test sample are intercepted and collected on the membrane. The antibacterial components of the test sample are removed by washing the membrane. Then inject the required culture medium directly into the bacterial collection incubator through the injection pipeline, place it at the specified temperature for cultivation, and observe whether there is any growth of bacteria.
The bacterial analyzer is a supporting instrument for the bacterial culture apparatus. Through the directional peristaltic pressure action of the bacterial analyzer, the test sample is filtered and cultured in the filter to test whether the test sample contains bacteria. Testing process. The test sample is continuously injected into the bacterial culture chamber through the injection pipeline. Using the downward pressure formed in the bacterial culture chamber, it is filtered through a 0.45 micron pore membrane. Microorganisms that may exist in the test sample are intercepted and collected on the membrane. The antibacterial components of the test sample are removed by washing the membrane. Then inject the required culture medium directly into the bacterial collection incubator through the injection pipeline, place it at the specified temperature for cultivation, and observe whether there is any growth of bacteria.
Main features of the bacterial collection device: New pump head: smoother, more uniform, and safer filtration. Fixed gear design: equipped with four major gears: "40R", "60R", "160R", "240R", which can meet the filtration needs of various doses of test samples such as large infusion, powder injection, and water injection. Split type drainage tank design: can move freely, convenient for operators' operating habits. The groove is designed with an arc shape, so that waste liquid will not remain in the groove, which solves the problem of bacteria that may be produced after long-term experiments. Bottle shaped bracket design: solves the trouble of replacing traditional large bottle brackets and small bottle brackets, as well as the risk of test samples falling off during the operation process. The bottle shaped bracket firmly fixes the test sample on the bracket, which is both safe and aesthetically pleasing. Circular bayonet design: Traditional right angle bayonet is very difficult to install hoses, and sometimes the pipes may get stuck, causing economic losses. Now, circular bayonet can be easily clamped and the hose can be inserted, which is very convenient. Integrated switch design: Avoid opening too many holes on the casing, making it cleaner and more user-friendly. The wrench is designed according to human mechanics and can easily clamp the leather tube firmly. Add a foot switch for easier experimental operation. What type of microbial limit is used for purifying water with a bacterial collector? I believe this is a question that many users are confused about; Because there is a fundamental difference between a bacterial collection instrument and a sterile inspection membrane filter; The bacterial collection device integrates bacterial filtration and cultivation, but cannot guarantee the sterility of the environment; And the sterile inspection membrane filter greatly ensures the sterility; In a conventional sense, both can be used for purified water experiments; Since they are all used for microbial limit testing of purified water, are there any special requirements for the instruments? The answer is yes. The 2015 edition of the Chinese Pharmacopoeia stipulates that filters can withstand high temperatures of 121 ℃ and undergo high-temperature disinfection; Glass material. So it can only be satisfied by the filter.