A vacuum filtration is usually faster than a simple gravity filtration using a simple conical funnel. However, there are several points that have to be considered when performing a vacuum filtration. Due to the fact that reduced pressure is used in this procedure, special attention has to be paid to the equipment used in this procedure. The glassware (i.e. filter flask) should not have any cracks on the sides or the bottom. It is also imperative that the filter flask and the vacuum trap are clamped securely, so that they do not move during the filtration. The thick-walled tubing tends to act like a whip sometimes, and slams the filter flask into the hotplate or other metal objects resulting in an implosion (or tips the flask over and the product is found afterwards on the bench or even worse on the dirty floor!).
The clean filter flask and the vacuum trap consist of heavy-walled glassware. Thick-walled tubing should be used as well. Normal tubings that are used as water hoses will collapse when a vacuum is applied!
Never perform a vacuum filtration without a vacuum trap. It is also a good idea to keep the trap clean, just in case something gets sucked in there. It is easier to recover it from a clean trap then from a dirty trap.
Vacuum filtrations can only be performed with funnels that have a flat surface e.g. Hirsch or Büchner funnel, which are both made from procelain! The filter paper has to cover all holes in the bottom of the funnel and does not extend up the sides. This means that the small pieces (~1.3 cm) of filter paper are used for the Hirsch funnel, and not a bigger circle hanging in the funnel. If the filter paper has the wrong size or not properly placed in the funnel, a significant part of the solid will "run through" the filter paper.
If the filter paper is too big for the Büchner funnel, it has to be cut to size with scissors. (From this point of view, it might be a good idea to generate a cardboard blank from an existing filter paper). The filter paper is moistened with the solvent that makes up the solution. This prevents the formation of multi-layer systems in the filter flask. It should adhere well to the bottom before the vacuum is applied. Then the solution is slowly poured slowly into the funnel.
Dear Sir/Madam,How a nice day! The Chinese traditional New Year is coming. We will have a vacation from Jan.26 to February 4th, lf you are interested in our product, please don't hesitate to contact us. Our contact information is as following:Email: sales@topoilpurifier.comMob:+86 13983391036 (wehca
Series ZYD-M Double-Stage Vacuum Transformer Oil Purification Systems is used for transformer oil dehydration and transformer oil degasification as well as other electrical insulating liquids such as silicone fluids with modern technique. The ZYD-M Process is able to increase and maintain the oil's
In research facilities, maintaining accurate fuel quality control is of utmost importance. To ensure the smooth operation of various processes, it is crucial to have a reliable method for testing the density of oil. This is where oil density testers come into play. In this article, we will explore t
In a factory setting, machinery maintenance plays a vital role in ensuring smooth operations and preventing costly breakdowns. One effective way to optimize maintenance practices is by incorporating oil detectors into the maintenance routine. The article explores the various benefits of using oil de
Construction sites are busy and hazardous environments. With heavy machinery constantly in use, the risk of fire is a constant concern. To protect both personnel and equipment, it is crucial to have effective fire resistance oil purification systems in place. These systems play a vital role in maint
Water plays a critical role in oil testers when it comes to preventive maintenance in warehouses. In fact, it is of utmost importance to understand the significance of water in these devices and the best practices for its usage. The title of this article, "The Importance of Water in Oil Testers for
Construction site equipment is subjected to harsh conditions and heavy usage, making regular maintenance and care essential. One crucial aspect of equipment maintenance is the proper filtration of lubricating oil. In this article, we will delve into the significance of lubricating oil filtration mac
Transformer oil degasification is a crucial process in workshops that deal with transformers. The importance of using degasifiers for this purpose cannot be overstated. In this article, we will delve into the various benefits of transformer oil degasification and explore the significant role that de
Fuel oil filtration systems have become essential for heavy equipment maintenance due to the numerous benefits they offer. These advanced filtration systems not only improve the performance and efficiency of the equipment but also lead to significant cost savings and increased longevity. Additionall
Are you in the market for a lubricant oil purifier for your warehouse? Choosing the right one can make a significant difference in the efficiency and longevity of your equipment. With so many options available, it can be overwhelming to know where to start. This article will guide you through the fa
Chongqing TOP Oil Purifier Co.,LTD.
Located at Chongqing city--a southwest electromechanical manufacturing center as well as national municipality, Chongqing TOP is a professional leading manufacturer and supplier of oil purifiers and various related testers.
