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Friday 13 December 2019

Known as surface filtration, membrane filtration is a process that the solid particles can be separated through a very thin filter medium. The particles are usually larger than the pore size of the membrane. During separation, a semi-permeable membrane acts as a selective barrier...

Friday 13 December 2019

High-perfor mance liquid chromatography (HPLC) was developed on the basis of classical liquid chromatography and introduced gas chromatography theory in the late 1960s. It differs from classical liquid chromatography in that the filler particles are small and uniform, and the small...

Friday 13 December 2019

During the sample pre-treatment process, except for the selection of SPE cartridge sizes, there are still several factors that should be carefully considered. Specification of SPE Cartridge The first important factor to select an SPE cartridge is the filler. The principle is to ensure...

Friday 13 December 2019

What is vacuum filtration? Vacuum filtration forms negative pressure in the filtrate outlet as the power of filtration. This kind of filtration machine is split into batch operation and continuous operation. Vacuum filtration equipment with batch operation can filter suspension liquid...

Friday 13 December 2019

HAWACH glass fiber extraction thimbles are made of 100% alkali-free glass fiber and processed at high temperature, which is adhesive-free and chemically inert. It can collect small and sub-micron particles. It is a high-efficiency filtering device that captures soot, acid mist, aerosol...

Friday 13 December 2019

The bottle-top dispenser may sometimes be used with hazardous materials, operations, and equipment. It is beyond the scope of the following contents to address all of the potential safety risks associated with its use in such applications. To consult and establish appropriate safety...

Thursday 12 December 2019

QuEChERS is a streamlined technique that makes it easier and cheaper for analytical chemists to examine the pesticide residues in agricultural products. It is exploited by many professors of the American Ministry of Agriculture in 2003, especially Anastassiades. This technique shares...

Thursday 12 December 2019

Made of selected pure cellulose and totally free from binding, Hawach cellulose extraction thimbles guarantees reliable results. The consistent high porosity makes sure that you can have the fast flow through during applications. As the ideal choice for very sensitive detections in the lab...

Thursday 12 December 2019

The electronic bottle-top dispenser is one of the most commonly used equipment in the laboratory. It is the most ideal tool to use titration and accurately transmit the volume of titrating solution. In general, we can use the electronic bottle-top dispenser to make potentiometric titration...

Thursday 12 December 2019

Vacuum filtration manufactured in Hawach Scientific has better experience in laboratory tests due to the elimination of chemical and mechanical pretreatment, and the ratios of filtration areas are extraordinarily improved. It can ensure an accurate and professional test work under...

Thursday 12 December 2019

Hawach sample vials are available with three types: screw top, crimp the top and snap top sample vials. Reducing the possibility of sample evaporation, crimp caps provide the tightest seal. Compared to crimp tops, snap top sample vials can be applied and removed by hand more easily...

Thursday 12 December 2019

As a unique chromatography technique that pushes solvent through the column uses by compressed gas or a pump, flash column chromatography is highly appreciated as an advance technique because it makes flow rates of the solvent much faster than the gravity flow. Developed in the 1970's...

Thursday 12 December 2019

Because the cotton fiber in the filter paper has a good affinity with water, it can absorb about 22 percent of the water, in the form of a hydrogen bond with cellulose water has 6 to 7 percent. In general, it is very difficult to remove. Compared with the affinity with water, the...

Thursday 12 December 2019

Hawach bottle-top dispenser is an instrument for measuring liquid medicine. To ensure that your bottleneck dispenser has a long service life, some maintenance, and cleaning work can be done in the following situations: the pipette piston is not flexible; the dispensing of some restrictive...

Wednesday 11 December 2019

The specific steps are as follows: 1. Clean the glass cylinder. 2. Empty and unscrew the separator from the bottle, and lift the separator upward until the drain pipe leaves the liquid level but is still in the bottle-top dispenser. 3. Touch the inner wall of the bottle carefully...

Wednesday 11 December 2019

The quality of a vacuum pump depends on its mechanical structure and the quality of the oil. It must be protected when using a vacuum pump. If the organic solvent with high volatility is distilled, the organic solvent will increase the vapor pressure by the oil absorption, thereby...

Wednesday 11 December 2019

Bottle-top dispenser marketed by Hawach Scientific is characterized in good chemical tolerance, high-temperature disinfection and sterilization, and high-pressure resistance. The bottle is made of PTFE FEP BSG PP, which gives it maximum viscosity resistance. It is convenient to operate...

Wednesday 11 December 2019

The filter capsule is also called the submerged filter, it uses a folding membrane with a large filter surface area. It is suitable for the filtration of a large volume of solution. The shell of the filter capsule is made of polypropylene and does not contain any adhesives and other chemicals...

Wednesday 11 December 2019

Membranes filter is frequently used for purity during clarification and sterilization procedure, it is often fit for general biological filtration, particle retention, and removal for aqueous solutions. Membranes filter provided by Hawach scientific are available in two types: one is roll type...

Wednesday 11 December 2019

At HAWACH, there are two series of vacuum pumps and the 033A vacuum pumps and 050B vacuum pumps are the best sellers, with the pumping speed 20 and 30 respectively. The following features make HAWACH vacuum pump popular in the market. 1. Cutting-edge design and technology bringing...

Wednesday 11 December 2019

The HPLC reversed-phase column is made of high-purity and high-strength silica gel by using advanced bonding technology. It has a high surface bonding rate and good peak shape for alkaline and acidic compounds. With a high column capacity and long service life, it is the one for the...

Wednesday 11 December 2019

Hawach SPE Cartridge falls into different types, concretely including Iron-Exchange、Mixed Mode、 Normal Phase、Polymeric and Reversed-Phase types, and each type also has its own sub-product. For example, Iron-Exchange is divided into Ion-Exchange NH2 SPE Cartridge, Ion-Exchange PRS SPE Cartridges...

Wednesday 11 December 2019

Syringe filters are used in a wide range of laboratories to provide fast and efficient water and organic solution filtration solutions. It is made from a variety of membrane filters containing polypropylene housings, and special injection molding processes increase burst pressure...

Wednesday 11 December 2019

Flow Process of HPLC column First, the solvent in the storage bottle is pumped into the chromatographic system by pump and then output, and then introduced into the sampler after flow and pressure measurement. Second, object to be tested is injected by the sampler, passes through...

Tuesday 10 December 2019

Filter housing supplied by Hawach Scientific is cost-effective that is both durable and reliable. It is fabricated using sturdy and high-grade materials to make it even more demanding. The possibility of contamination is avoided with the fluid traveling in different layers. Besides...

Tuesday 10 December 2019

Nylon membrane filters are suitable for use with high PH samples; PES membranes filters are fit for filtration of compatible organic solvents and aqueous samples; PP membrane filters are widely used in analytical and research applications for the pharmaceutical, environmental, biotechnological...

Tuesday 10 December 2019

To purchase the most suitable bottle-top dispenser, it is necessary to compare one with another based on the unique and specific requirements of the customers. Several factors should be considered carefully during the purchasing selection. Performance The first and most important...

Tuesday 10 December 2019

The protective HPLC columns influence the separation result. First of all, the protective column has a good positive effect on the experiments. Even if the stationary phase is chosen incorrectly, the protective column can also be effective for separation. The protective column is...

Tuesday 10 December 2019

To select the appropriate SPE cartridge, we normally consider it from two aspects: the selection of adsorbent and specification of the cartridge. The use of appropriate adsorbent can achieve good separation between interfering substance and target component, and also meet the requirement...

Tuesday 10 December 2019

Hawach's pipette b lends cutting edge innovation and engineering to deliver superior reproducible results with extraordinary comfort. Secure volume lock allows convenient one-hand adjustment and averts potential drift. It brings excellent hand comfort and less fatigue while maintaining...