COLUMN - 1392 Anuncios

Viernes 13 diciembre 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...

Viernes 13 diciembre 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...

Jueves 12 diciembre 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...

Miércoles 11 diciembre 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...

Miércoles 11 diciembre 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...

Miércoles 11 diciembre 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...

Martes 10 diciembre 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...

Martes 10 diciembre 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...

Lunes 09 diciembre 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...

Miércoles 13 noviembre 2019

Cantidad : 5000 ton/p - Precio : ＞0.8USD

Product description Stainless Steel Capillary Tube Description: Whether you need to exchange device tubing as a section of your troubleshooting or want to minimize the dwell extent of your system as you pass to narrower columns. As one of the most professional stainless steel capillary...

Miércoles 06 noviembre 2019

Cantidad : 10000pcs - Precio : 0.1-100usd

ISUTAMI SW standard linear bearings, also known as SW standard linear ball bearings or SW standard linear bushing bearings. SW is the imperial series, mainly used in the markets of the UK and other British Commonwealth of Nations. The bushing and steel ball of SW standard linear bearing...

Miércoles 06 noviembre 2019

Cantidad : 10000pcs - Precio : 0.1-100usd

ISUTAMI KBK-L long square flange linear bearings, also known as KBK-L long square flange linear ball bearings or KBK-L long square flange linear bushing bearings. KB is the code name of the European standard series in linear bearings, F is the meaning of square flange, L is the...

Miércoles 06 noviembre 2019

ISUTAMI LMKP-L long pilot pattern square flange linear bearing, also called LMKP-L long pilot pattern square flange linear ball bearing or LMKP-L long pilot pattern square flange linear bushing bearing. LM is the code name of the Asian standard series in linear bearings, K is the...

Miércoles 06 noviembre 2019

Cantidad : 500square - Precio : 25USD

We have aluminium composite panels for sale! The aluminum plastic plate also called pe aluminum composite panel as a new type of decorative materials with its optional color diversity, convenient construction method, excellent processing performance, perfect fire retardancy and noble quality...

Domingo 13 octubre 2019

Solid phase extraction is a sample preparation method based on the chromatographic analysis. Solid phase extraction includes a solid phase (adsorbent with a certain functional group) and a liquid phase (sample and solvent). The liquid sample passes through a solid phase extraction...

Sábado 12 octubre 2019

Cantidad : 1set - Precio : 300000usd

The feeding component is used for material automatic feeding includes screw feeding machine, automatic supplement machine and material hopper machine, etc. The screw feeding system completes different length of screw feeding and works with the automatic screwing machine, which is...

Sábado 12 octubre 2019

The stationary phase, commonly known as the fillers, is the most central part of chromatography. People need to determine three aspects of stationary phase information in turn before determine how to select the kind of the stationary phase of the flash purification column. They are matrix type...

Sábado 12 octubre 2019

1. Leakage at joint Generally, it can be solved by tightening, cleaning and replacement. 2. Pump leakage Check whether the one-way valve and joint are loose, if loose and tightened (not too tight), check whether the seal of mixer and pump is damaged; 3. Leakage of injection valve...

Jueves 10 octubre 2019

The essence of the chromatographic process is the process of distributing the equilibrium of the molecules of the substance to be separated between the stationary phase and the mobile phase. The distribution of the different substances between the two phases will be different, which...

Miércoles 09 octubre 2019

Flash column chromatography is an easy and fast method to separate the complex mixtures. It can not only make the separation effect better but also shorten the time. How to put the sample into the flash column is of high importance in the preparation process of flash column chromatography...

Miércoles 09 octubre 2019

Generally speaking，with the increase of temperature, the viscosity of the mobile phase decreases. The situation will lead to an increase in the transfer rate of the substances. Thus the chromatographic separation effect will be better than before. Although the separation effect has been improved...

Miércoles 09 octubre 2019

Solid phase extraction (SPE) is used to reduce sample matrix interference and improve detection sensitivity. The separation selectivity of the solid phase depends on the retention strength of the components that can be retained, so the selection of the solid phase will depend on the...

Martes 08 octubre 2019

The essence of the chromatographic process is the process of distributing the equilibrium of the molecules of the substance to be separated between the stationary phase and the mobile phase. The distribution of the different substances between the two phases will be different, which...

Martes 01 octubre 2019

Diamond portable core drill rig which is also named as core drill stand, core drill holder. It consists of a vacuum or non-vacuum base, column and carriage. It is an indispensable part of diamond core drilling system. If you are going to drill holes with more than 100mm in diameter...

Lunes 30 septiembre 2019

Cantidad : 10set/mont - Precio : 0-1 million US dolla

Concrete placing boom used to deliver and place the concrete, which is connected to a concrete pump. As an auxiliary equipment for concrete pump, it can deliver the concrete quickly and accurately through the connected like a mechanical hand. It also expands the concrete pumping area...

Lunes 30 septiembre 2019

Cantidad : 10set/mont - Precio : 0-1 million US dolla

TRUEMAX column inner climbing concrete hydraulic placing boom is TRUEMAX star product in all TRUEMAX products range. Because of the automatic climbing mechanism which is equipped in placing boom, it can be climbed by hydraulic cylinder and lifting as the building rise its height....

Lunes 30 septiembre 2019

Cantidad : 6000pc/mon - Precio : $90-$350

We have various cheap plus size bridesmaid dresses for you to choose! Black Off Shoulder Mermaid Satin Prom Dress with Slit #6094 Emerald Green Long Satin Prom Dress with Lace Up Back #6092 Red Tight Fitted Spaghetti Straps Simple Prom Dress with Slit #6067 Black Chiffon Two Pieces...

Lunes 30 septiembre 2019

Merits of Flash Column Flash column provided by Hawach scientific provides with many merits and unique properties, which makes it obtain consistent confidence and build a good image in the market. Specific merits are as follows, product model is complete, specifically including 15...

Lunes 30 septiembre 2019

HPLC columns are widely used in many fields, whose column efficiency, capacity, permeability characteristics, and service life are very important. After using for a period of time, there will be changes such as column pressure increase, column efficiency decrease, etc. If no measures are taken...

Domingo 29 septiembre 2019

Hawach glass solvent filter is made of high-quality borosilicate glass, which can be used to filter various aqueous solutions, organic substances, and corrosive liquids. The glass Solvent filter is available in one liter and two liters and consists of a triangular liquid collection bottle...