Biens d'équipement - Import Export

Jeudi 12 décembre 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...

Jeudi 12 décembre 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...

Jeudi 12 décembre 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...

Jeudi 12 décembre 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...

Jeudi 12 décembre 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...

Mercredi 11 décembre 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...

Mercredi 11 décembre 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...

Mercredi 11 décembre 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...

Mercredi 11 décembre 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...

Mercredi 11 décembre 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...

Mercredi 11 décembre 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...

Mercredi 11 décembre 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...

Mercredi 11 décembre 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...

Mercredi 11 décembre 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...

Mercredi 11 décembre 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...

Mardi 10 décembre 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...

Mardi 10 décembre 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...

Mardi 10 décembre 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...

Mardi 10 décembre 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...

Mardi 10 décembre 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...

Mardi 10 décembre 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...

Mardi 10 décembre 2019

PP Filter Cartridge PP filter cartridge is made of polypropylene ultrafine fiber hot melt and wrapped. The fiber randomly forms the three-dimensional microporous structure in space. The pore diameter is distributed in a gradient along the filtrate flow direction. It integrates surface...

Mardi 10 décembre 2019

Due to the variety of targets, large structural differences, and low target content, the detection of pesticide residue method requires being accurate, rapid, sensitive, simple and low cost. The QuEChERS method is more and more widely used in pesticide residue detection, as it is green and quick...

Mardi 10 décembre 2019

Mixed cellulose ester (MCE) filter membrane is made of refined nitrocellulose and added with the appropriate amount of cellulose acetate, acetone, n-butanol, ethanol, etc. It is hydrophilic, non-toxic and hygienic. The MCE filter membrane is mainly used for filtering aqueous solutions...

Lundi 09 décembre 2019

Quantité : 1000 - Prix : 3,00 €

Produits idéal pour ouverture boutique , foires expo ou marche et foires Lot de 1000 pièces de plaques émailles publicitaire vintage plusieurs dimensions et plusieurs modèles Le lot peut êtres divise par 2 Cest a dire: 500 pièces a 3 euros/pièces Ou 1000 pièces a 2,50 euros/pièces...

Lundi 09 décembre 2019

During extraction, the sample to be tested is placed in the cellulose extraction thimble and put into the extraction tube. Petroleum ether was added into the extraction bottle, heated the extraction bottle, and petroleum ether was gasified. It rose into the condenser from the connecting tube...

Lundi 09 décembre 2019

Hawach Scientific constantly commits to maintain the good performance of bottle-top dispenser, suggestions on management and maintenance are followed. The deviation occurred in the operation process can be overcome by regular calibration. Free on-line calibration is provided, and...

Lundi 09 décembre 2019

Quantitative filter paper is used in precipitation weight analysis. Because the quantitative filter paper has been treated with hydrochloric acid and hydrofluoric acid, the ash content after burning is negligible, so it is also called ashless filter paper. The following are the specific...

Lundi 09 décembre 2019

Pipette tips supplied by Hawach Scientific fit for wide applications and sample handling with superior performance. It is made from non-sterile PP material in a fully automated and clean room facility, which can assure excellent clarity and flexibility for accurate analysis results...

Lundi 09 décembre 2019

SPE cartridge A solid-phase extraction device is a physical extraction process involving a liquid phase and a solid phase. In the solid-phase extraction process, the adsorption of the solid relative analyte is greater than that of the sample mother liquor. When the sample passes through...