Influence of Material on Laboratory Multi-branch Vacuum Filtration

Multi-branch vacuum filtration system is a kind of filtration product that can filter multiple groups of samples at the same time, the common type is three branches( Stainless Steel Triple-Branches Vacuum Filtration Unit, Glass Triple-Branches Lab Vacuum Filtration System) and six branches( Stainless Steel 6-Branches Buchner Funnel Vacuum Filtration, Glass 6-Branch Vacuum Filtration Kit). This can significantly reduce the number of pumps and bottles purchased, reduce the space on the table, and save time in filtration operations, which can help improve the efficiency of experiments.

A complete multi-branch set usually includes a pump, a collection bottle, a multi-branch holder, and a filter funnel. In the filtration process, an integral solution is used with a non-polluting oil-free diaphragm vacuum pump. The whole set of filtration systems can be safely placed and operated in laboratories, clean rooms, and clean workbenches. It has the advantages of safety and reliability, stable performance, beautiful appearance, environmental protection, energy saving, etc.

HAWACH multi-branch filtration systems are available in three different materials to suit different applications and customer habits. This article will describe the differences between these three different materials and how they differ in specific applications.

316L stainless steel vacuum filtration

As a metal material, sturdy and durable, and 304 and other stainless steel, compared with better salt resistance performance. In addition, stainless steel material has remarkably high-temperature resistance compared to plastic, glass, ceramics, etc. In addition to being able to perform general 121-degree high temperature and high-pressure disinfection, it can even be burned directly using a flame. For example, we have introduced two types of triple and six types of filter support, filter membrane support sheet, and stainless steel cups made of 316 stainless steel, because of their high-temperature resistance, in the standard equipment we have a special flame sterilization gun. For specific use, customers can use the flame to quickly sterilize the filter, membrane base, and cup when replacing the next set of samples after the current set is over, to avoid cross-contamination problems that may occur when filtering the next set of samples. It is the high-temperature resistance that allows for rapid extinction using a flame that makes these two models particularly suitable for applications where microbial limit check filtration is performed.

Glass vacuum filtration

Three branches and six branches are two multifilter systems that use glass funnels. Glass filter material is more traditional, with a long history of use, but also laboratory operators are more familiar with the material. At the same time, its production cost is lower than stainless steel and plastic, for customers with a tight budget, but also needs to carry out a large number of samples filtration, but is also a way to control the cost, but also the successful completion of experiments.

A glass filter is a special equipment in liquid chromatography analysis, which is a common device in chemical laboratories. In chromatographic analysis, it plays an important role in removing impurities that affect the life of the column and the detection accuracy of the system. It also has a significant effect on degassing the liquid in the filtration process.

Plastic vacuum filtration

Compared with glass and stainless steel, it can withstand lower temperatures (can withstand 121 degrees autoclaving), but it has the characteristics of lightness, low production cost, and strong plasticity for open-molded production. These two types (three-branch and six-branch) are equipped with the corresponding number of plastic screw-clamp filter funnels. The screw-clamp design can be opened or closed by gently rotating, eliminating the need for the traditional glass funnels to fix the filter cup and the filter membrane base with a jig, and also eliminating the problem that the filtrate flows away directly without the membrane due to the inability to fit the filter membrane of the cloth funnel.

From a comprehensive point of view, the plastic funnel is a very cost-effective product and has a wide range of uses. It is suitable for checking suspended solids in various surface waters, microbial limit check filtration, etc. It can also be used for filtering larger quantities of general aqueous solutions in laboratories for sterilization, impurity removal, or clarification filtration.