The Salient Features of Hawach Vacuum Filtrations

With the continuous upgrading of the current laboratory products, users have higher and higher requirements for the functionality, appearance, and ease of use of the products, in addition to the rigid requirements for the basic use of laboratory instruments and equipment.

In view of this, HAWACH conducts continuous market research and redesign of the main negative pressure filtration products, and in response to the pain points and new needs of customers in the process of use, the original products are deeply improved to meet the functionality and convenience of customers. Degree and other needs.

A vacuum filter is a device that achieves solid-liquid separation with vacuum negative pressure as the driving force. In terms of structure, the filter section is arranged along the horizontal length direction, which can continuously complete filtration, washing, drying, and other operations.

HAWACH vacuum filtration device is designed to solve the problems of insufficient effective filtration area, fragile parts, and cumbersome liquid pouring that are common in traditional filtration products such as Buchner funnels and sand core filters. To continuously improve the user experience, we will introduce the characteristics of these designs and specific usage methods in detail below.

Glass Solvent Filters (300mL Glass Solvent Filter, 500ml Glass Solvent Filtration Apparatus)

Glass solvent filter is standing equipment in the chemical laboratory, it can choose different materials, and different filter pore size filter membranes according to the needs of operators, so as to achieve the purpose of impurity, purification, and sterilization insolvent. It is suitable for filtration and degassing of the mobile phase in liquid chromatography analysis, which plays a key role in prolonging the service life of the instrument and column and improving detection accuracy. It has also been widely used in gravimetric analysis, microanalysis, colloid separation, and aseptic experiments.

Glass Three-Branches Vacuum Filtrations

Glass Vacuum Filtration( Glass Single Vacuum Filtration Assembly, Glass Triple-Branches Lab Vacuum Filtration System, Glass 6-Branch Vacuum Filtration Kit)

Firstly, the suction flask of glass vacuum filtration is made of high borosilicate glass materials and has excellent chemical and physical properties. Also, the glass vacuum filtrations are equipped with the borosilicate Buchner funnel and filtering membrane which have good chemical properties.

Secondly, the friction plug of the glass vacuum filtration is mostly designed with special PTFE materials of advanced technology. It has high corrosion resistance and good cost performance.

Thirdly, the parts of sample loading and unloading are specially designed PTFE valves with glass flanges. In general, they are free of dead corners and easy to disassemble for the unloading of solid samples.

Fourthly, the whole part of the glass vacuum filtration has good sealing properties and the negative pressure can reach under 0.095 MPa in the stationary state.

Fifthly, the structure design of the whole part of glass vacuum filtration is scientific. The feature of visualization is outstanding and practical.

Furthermore, the frame and pipe of the glass vacuum filtration are mostly made of stainless steel. When referring to the desktop support, normally it is movable.

On the whole, glass vacuum filtration is applied in liquid-liquid extraction. In most situations, it can be also used as a normal temperature reaction filtration.

Stainless-Steel Vacuum Filtrations ( Stainless Steel Single-Branch Vacuum Filtration Manifold, Stainless Steel Triple-Branches Vacuum Filtration Unit, and Stainless Steel 6-Branches Buchner Funnel Vacuum Filtration)

The stainless-steel vacuum filtrations are suitable for the filtration of large amounts of samples in the laboratory. Normally, the whole part of the filter holder manifolds is made of stainless steel materials with good corrosion resistance. In general, stainless-steel vacuum filtrations are mostly applied for all kinds of vacuum filtration experiments in the laboratory, such as the detection and filtration of microorganisms and suspended solids.

Furthermore, the features of stainless-steel vacuum filtrations are listed below:
1. The whole part of the equipment including the filter cups switch and filter holder manifolds are all made of stainless steel materials. They have good corrosion resistance as well as excellent durability;
2. In most cases, the waste liquid bottles are made of polycarbonate materials with a certain resistance to the mill. In the meantime, the bottles can be put into the autoclave for sterilization;
3. There is a cut-off valve inside the waste liquid bottle. After the waste liquid bottle is full, the cut-off valve will automatically turn off and effectively prevent the waste liquid from being absorbed into the vacuum pump(Standard Vacuum Filtration Pump, Anti-Corrosion Diaphragm Vacuum Pump) and further damaging it;
4. The stainless-steel vacuum filtrations are fully equipped with various types of units and thus keep the users out of trouble with installation.

Glass One-Branch Vacuum Filtrations

Characteristics and specific usage

1. The traditional Buchner funnel and cup filter need to manually pour the liquid to be filtered into the filter cup. In this improved version, HAWACH has designed an automatic sample injection cup lid. Operators only need to connect one section of the hose to the interface of the lid and put the other end into the liquid to be filtered.

After turning on the main unit, the liquid will be sucked. The filter cup does not need to be poured manually so that the automatic liquid feeding is realized, which can reduce the workload of the experimenter to a certain extent.

2. The filter cup of the filter funnel and the filter membrane placement base are connected by a spin-clamp method. The filter cup and the funnel base can be separated and assembled by gently rotating the filter cup. No fixtures, clamps, and other accessories are required.

Since there is only one component when taking the filter cup, operators can take the filter cup with one hand and use the clamp to change the membrane with the other hand, which is convenient to take and take the filter membrane. At the same time, the sealing performance is better.

3. The filter bottle pump tube connector is equipped with a protective cap. The protective cap can completely prevent the problem of excessive force when plugging in and pulling out the vacuum pump tube and easily breaking the glass suction bottle interface.
4. The bottom of the suction filter bottle has a fixed base that can be adsorbed on the smooth tabletop to prevent the filter bottle from shaking and tipping.
5. Both the filter bottle and the suction cup are marked with graduation lines, which is convenient for users to observe.
6. The suction filter pump is equipped with a vacuum gauge and a vacuum regulating valve as standard, which is convenient for the user to adjust the filtering speed according to the actual needs when filtering.
7. The water-blocking filter with anti-waste liquid back-suction can prevent 100% of the liquid from being directly sucked into the pump, making it safer to use.
8. The bottom of the suction filter bottle is equipped with a drain and a drain tube. When the filter bottle is full of liquid each time, the drain tube clamp can be loosened, and the filtrate in the suction filter bottle can be directly discharged from the bottom drain. No need to stop the suction filter pump every time the filter bottle is full and remove the filter funnel to pour out the filtrate.