SUBSTANCES - 1737 Anuncios

Viernes 16 agosto 2019

NH2 HPLC columns refer to the chromatographic columns that use silica gel as matrix carrier to bond amino groups. They are usually used for the analysis of carbohydrate compounds, and the mobile phase is usually methanol, acetonitrile and buffers salt solution. - The cleaning method...

Jueves 15 agosto 2019

Review the article that I had written for product introductions, it seems that the content which making fun of products basically does not have, a person with the label of “warm person heart” is wearing very tired. The things about making fun are so cool to be said completely by naked...

Miércoles 14 agosto 2019

Syringe filters are available out-of-the-box, no need for membrane changes and cleaning, and allow easy purification or detoxification of various solutions, including cell and microbial media, reagents, and additives, protein solutions and buffers. - Maintenance of a syringe filter - 1...

Sábado 10 agosto 2019

Cantidad : Proofing b - Precio : 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...

Miércoles 07 agosto 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...

Miércoles 07 agosto 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...

Martes 06 agosto 2019

HPLC is more suitable for the separation and analysis of substances with the high boiling point, poor thermal stability, physiological activity, and relatively large molecular weight. Hawach HPLC columns are widely used in the analysis of nucleic acid, peptide, lactones, polycyclic...

Lunes 05 agosto 2019

Category of extraction thimbles In terms of the material, extraction thimbles series in Hawach are divided into three main types – cellulose and glass fiber extraction thimble. However, the quartz one can not be manufactured in China, so the other two are currently occupying all thimbles...

Sábado 03 agosto 2019

SPE cartridge can be divided into three classes on the markets: silica-based cartridges, polymer-based cartridges, and adsorption-based cartridges. And here we talk about the three types of silica-based cartridges. The first type is the C18 cartridges. This kind of cartridges bond...

Viernes 02 agosto 2019

Usually, the sample contains something that is not of interest to the analyst. Salt, lipids, lipid-containing substances, humic acid, hydrophobic proteins, and other biological substances are some substances that may interact with the HPLC column in use. These substances have less...

Miércoles 31 julio 2019

Diamond is a mineral made of pure carbon and the hardest substance in the natural world. It can not only be processed into valuable jewelry but also has great potential in the industry. It features high thermal stability, high chemical stability, good electrical conductivity and good...

Martes 30 julio 2019

The extraction thimble, as its name implies, is a cylindrical element used for filtering. It is generally divided into extraction thimble for filtering gas and liquid media. Usually, we refer to the extraction thimble is mostly used to filter gas, called the air extraction thimble...

Martes 30 julio 2019

The improper use of chromatographic columns will make the columns decrease or lose effectiveness. Generally speaking, the columns always have problems at the end of them. If we can install a short column with the same stationary phase as the analysis column in front of analysis column...

Martes 23 julio 2019

White Portland cement or white ordinary Portland cement (WOPC) is similar to ordinary, gray Portland cement in all respects except for its high degree of whiteness. Obtaining this color requires substantial modification to the method of manufacture, and because of this, it is somewhat...

Martes 23 julio 2019

Description of high alumina cement High Alumina Cement (HAC, sometimes known as calcium aluminate cement (CAC) or aluminous cement) is composed of calcium aluminates, unlike Portland cement which is composed of calcium silicates. It is manufactured from limestone or chalk and bauxite...

Martes 23 julio 2019

What is CSA Cement CSA(Calcium Sulfoaluminate Cement) cement is a special cement used in many applications where early high strength and fast setting development are necessary. CSA cement is short for Calcium Sulfoaluminate Cement, also named rapid setting cement, high strength cement...

Martes 23 julio 2019

CSA Binder Introduction: Calcium Sulfoaluminate binder is pure CSA clinker that grinded without any gypsum. It is a hydraulic cementitious material blend high in C4A3S (Calcium Sulfoaluminate Crystals). CSA Binder characteristics Appearance: light grey powder Rapid strength development...

Martes 23 julio 2019

Description of Calcium aluminate cement Calcium aluminate cement, alumina cements or high alumina cements are obtained by the reaction at high temperature of lime (from limestone) and alumina (contained in natural minerals like bauxite). The product obtained after cooling is a hard mineral...

Martes 23 julio 2019

What is CSA Cement CSA(Calcium Sulfoaluminate Cement) cement is a special cement used in many applications where early high strength and fast setting development are necessary. CSA cement is short for Calcium Sulfoaluminate Cement, also named rapid setting cement, high strength cement...

Lunes 15 julio 2019

The solid phase extraction cartridges (SPE column, or Solid Phase Extraction Cartridges, or SPE cartridges for short) is a sample pretreatment device for extraction, separation and concentration developed from a chromatography column. Mainly used in sample pretreatment of various foods...

Martes 09 julio 2019

The reversed-phase HPLC columns may be repeatedly injected into a sample containing a strongly retained material, and in particular, the sorbent components such as large molecular weight or hydrophobic biological flow proteins and strong alkaline substances may be adsorbed on the silica medium...

Lunes 08 julio 2019

QuEChERS is a pretreatment that has the characteristics of Quick、Easy、Cheap、Effective、Rugged and Safe, which is the reason why it is becoming more and more popular in the new testing methods. It was developed by Professor Anastassiades in 2003, which was used in agricultural testing at first...

Lunes 08 julio 2019

1.Classification of extraction thimbles The extraction thimble, as its name implies, is a cylindrical element used for extracting. According to the material, it can be divided into three categories: cellulose exaction thimbles, glass fiber exaction thimbles, and quartz fiber exaction thimbles...

Lunes 08 julio 2019

SPE Technique Introduction SPE(Solid-phase Extraction), is an increasingly popularized technology of sample pretreatment, which is established on the basis of traditional LLE(Liquid-liquid Extraction). Combined with the substance interaction mechanism that like dissolves like, and...

Viernes 05 julio 2019

We recommend materials and applications of two kinds of extraction thimbles in Hawach. The material of extraction thimbles Due to different materials of extraction thimbles, two types of extraction thimbles are sold in the Chinese market. Cellulose extraction thimbles: high-grade...

Jueves 04 julio 2019

C8 HPLC columns are used to isolate many organic compounds, which are one of the reversed phase silica gel columns. The maintenance of C8 HPLC columns requires organic solvents. Chromatographic grade methanol is recommended and different brands of chromatographic columns should be...

Jueves 04 julio 2019

Activation, also known as solvation, add a suitable solvent to expand the functional groups on the adsorbent and remove possible interferences on the adsorbent. Equilibrium, remove the activated solvent to create a suitable solvent environment for sampling. Usually, use the same solvent...

Jueves 04 julio 2019

The glass fiber extraction thimble is made of ultra-fine glass fiber and is used for various applications. It's a high-efficiency filter device for collecting harmful substances such as soot, acid mist, and beryllium substitute. It has the advantages of high-temperature resistance...

Martes 02 julio 2019

Pip ettes are often used in laboratories, schools, research institutes, hospitals, etc. Among the many pipette types, multi-channel pipettes are pipettes with multiple tips, so some users are in use. It is found that the pipette tip suction amount is inconsistent. What causes the...

Martes 02 julio 2019

The average sample addition recovery rate of QuEChERS method is higher than 85%, with fewer impurities interfering with the detection of the target substance, a small amount of solvent, simple and fast operation, which will be the preferred pretreatment method for routine detection...