SOLVENT - 1818 Annonces

Mercredi 11 septembre 2019

When storing the column, the column should be filled with acetonitrile or methanol, and the column joint should be tightened to prevent the solvent from evaporating and drying. It is absolutely forbidden to leave the buffer solution in the HPLC columns for an overnight or longer period of time...

Mardi 10 septembre 2019

1. Advantages and disadvantages of commonly used extraction solvents Acetonitrile: easy to salt out; compatible with LC/MS; difficult to concentrate Acetone: not easy to salt out; easy to volatilize, concentrate Ethyl acetate: immiscible with water; less extraction of impurities;...

Mardi 10 septembre 2019

Extraction thimbles are often used when you need multiple extraction cycles to dissolve the desired compound in the lab. Extraction units such as the Soxhlet extractors or automized extractors, equipped with extraction thimbles, can save time of handling and make the extraction complete...

Mardi 10 septembre 2019

According to the separation mechanism of substances, Chromatography can be divided into adsorption chromatography, distribution chromatography, ion exchange chromatography and the like. The operation mode of the adsorption thin layer chromatography refers to that the adsorption capacity...

Mardi 03 septembre 2019

Hawach hydrophobic polytetrafluoroethylene(PTFE) pleated filter cartridge has high porosity, high flow rate, and strong bacterial interception ability. Unique PTFE and polypropylene materials make it have wide chemical compatibility and biological safety. Hawach PTFE pleated filter...

Mardi 03 septembre 2019

The basic principle of SPE cartridges is that the liquid sample is made to pass through the adsorbent to retain the tested substance, and then the impurities are washed away with appropriate strength solvent, and then the tested substance is eluted with a small amount of good solvent...

Vendredi 30 août 2019

Reduced.bore.DIN 3202 f6 Threaded.ends: DIN259/2999.JIS. 130202/1302203.Internal.entry. blow-out.proof.stem Material: .CF8M.CF8.CF3M.WCB Pressure.rating: .1000PSI.WOG Pressure.test: .API.598.Lever.handle Penglai Huande steel valve CO.,LTD is a famous global valve manufacturer who...

Jeudi 22 août 2019

It is greatly necessary to mention the Salmonella In Food for Import And Export-Membrane Filter Screening Method where the vacuum flask is introduced. For customers to learn about the device better, related information is as follows. - About the salmonella - Salmonella can be divided...

Jeudi 22 août 2019

QuEChERS is an extraction method for pesticides in fruits and vegetables. It is also a cleanup method we use to remove sugars, lipids, organic acids, proteins, pigments, and excess water. After the publication of the original QuEChERS method in 2003, QuEChERS has been practiced all...

Samedi 17 août 2019

Quantité : 500kg

A functional insulator coating to protect insulators in pollution area, such as industrial area, coastal area and other extreme environmental conditions, also can be used in normal environmental conditions. RTV-II/ PRTV is a one part and new type Room Temperature Vulcanizing RTV silicone...

Samedi 17 août 2019

Quantité : 500kg

Leveraging upon our experience, we have become a prominent Anti-Algae & Anti-Fouling Coatings (RTV-ZB) Manufacturer, Exporter and Supplier in China and rest of the world. Applicable for flash-over & algae prevention, our well-formulated anti algae coating and anti fouling...

Vendredi 16 août 2019

According to the given principles of Hawach, there are three general sorts of syringe filter products specially designed for different customers' requirements. FILTSTAR Series With a high class, transparent color and imported membrane, the FILTSTAR is obviously distinguished with three standards...

Vendredi 16 août 2019

The membrane filters of different materials have different characteristics. Here are as follows: - Nylon (NY) Material - Features: hydrophilic, resistant to some organic materials, not strong acid, protein binding capacity is high, so it is not suitable for protein recovery. Application...

Jeudi 15 août 2019

Glass solvent filters are used for solvent particle removal and water phase mobile phase filtration. All components of glass solvent filters in contact with solvents are made of chemically inert glass or PTFE materials, which are used in combination with regenerated cellulose (RC)...

Jeudi 15 août 2019

Bottle-top dispenser, also known as bottle-top distributor and bottle-top pipette, is an instrument for accurately measuring liquid chemicals. It is generally divided into automatic bottle-top separator, continuous bottle-top separator, glass separator, bottle-top separator, bottle-top...

Jeudi 15 août 2019

The similarities FLASH and SPE are all column chromatography separation technology. FLASH is a fast separation mode for preparative chromatography, using optimized pre-packed low and medium pressure columns for chromatographic separation. The separation mechanism, stationary phase...

Mercredi 14 août 2019

Quantité : 1 - Prix : 5,96 €

Quick Details Place of Origin: Shanghai, China Brand Name: lanren Model Number: LRC1 Usage: Outdoor Function: Fireproof Surface Treatment: Anodized, Brushed, Mirror, PE Coated, PVDF Coated Supply Ability Supply Ability: 1000000 Square Meter/Square Meters per Month Packaging ...

Mercredi 14 août 2019

Quantité : 1 - Prix : 5,89 €

Quick Details Place of Origin: Shanghai, China Brand Name: lanren Model Number: LRC1 Usage: Outdoor Function: Fireproof Surface Treatment: Anodized, Brushed, Mirror, PE Coated, PVDF Coated Supply Ability Supply Ability: 1000000 Square Meter/Square Meters per Month Packaging ...

Mercredi 14 août 2019

Flash column chromatography is an alternative to long column chromatography developed in 1978. This method aims to separate the components from the mixture and thereby purify it. It is built from existing long column chromatography techniques and is time-consuming and often unsatisfactory...

Mercredi 14 août 2019

Hawach MCE membrane filters belong to the terminal filtration membrane, fast flow rate and not easy to absorb. The surface is smooth, the texture is thin, the void ratio is high and the microporous structure is uniform. Application of MCE membrane filters Filtrating bacteria and particles...

Lundi 12 août 2019

Syringe filter is a kind of filter connected to the front of the syringe. When the experimenters deal with the chromatographic samples with syringe filter, they should pay attention to avoiding bringing impurities in the process of filtration. One reason for the appearance of such...

Lundi 12 août 2019

The system of an HPLC column is composed of a liquid, a reservoir, a pump, a sampler, a column, a detector and a recorder. - The packing material of HPLC columns - The packing material has high carbon content, small surface polarity, very low chemical purity and high surface separation...

Lundi 12 août 2019

Solid phase extraction principle Solid phase extraction is a separation technique that combines selective retention, selective elution, and the like. When a complex sample solution passes through the sorbent, the sorbent selectively retains the aimed compound and a small number of...

Samedi 10 août 2019

Quantité : Proofing b - Prix : 200-1500CNY

PTFE Teflon PCB has excellent comprehensive performance: high temperature resistance (-192°C-260°C), corrosion resistance (strong acid, strong alkali, aqua regia, etc.), weather resistance, high insulation, high lubrication, no adhesion, Non-toxic and other excellent characteristics...

Vendredi 09 août 2019

What is the bottle-top dispenser? During a scientific experiment, a bottle-top dispenser can indicate its excellent precision and high-repetition of separating operation without wasting solvents. While handling with some corrosive liquids or solvents, it provides safety assurance...

Jeudi 08 août 2019

As a single-use filter cartridge, Syringe filters are utilized to remove particles from the sample prior to high-performance liquid chromatography (HPLC). The scientists like to attach them to the end of the syringes for general filtration, as syringe filters are affordable and convenient...

Jeudi 08 août 2019

Flash columns adopt high-capacity silica gel for precise filling, which has very excellent separation and purification performance. The specific surface area of high-capacity spherical silica gel is 40% higher than that of ordinary spherical silica gel, and the sample loading is twice...

Mercredi 07 août 2019

The principle of vacuum filtration is forming the negative pressure to drive the filtration at the outlet of the filtrate. This kind of filtration according to the forms of operation is divided into two types: batch operation and continuous operation. The vacuum filtration with batch...

Mercredi 07 août 2019

Food safety testing is a major issue related to people's livelihood. In recent years, the QuEChERS method has been widely used in the pretreatment of food safety detection samples. In addition, the method has been applied to trace analysis. QuEChERS Application The international application...

Mercredi 07 août 2019

Each analyst needs filter paper, which is a product with high consumption in the laboratory. Filter paper is commonly used in analytical laboratories as a filter medium to separate the solution from the solid. Basic introduction The paper is loose and has strong absorption performance to liquid...