COLUMNS - 1404 Annonces

Wednesday 11 March 2020

Column chromatography is found important in the labs due to its factors of easy packing procedure, low pressure of operation and low costs as well. Depend on the way that the solvent flows down the column, we can find two different kinds of column chromatography: one is gravity column...

Tuesday 10 March 2020

Types of HAWACH HPLC Column There are 2 kinds of HAWACH HPLC columns: Xcheoma series: with many types of fixed phase; with complete varieties and high quality. C18-Aqueous; C18-universal;C18-low pH; C18-Alkaline; C8-universal; C8-Low pH; C8-Fluorine; C4; C30; C1;Phenyl; PAH; etc Echroma series...

Tuesday 21 January 2020

The FLASH column is the heart of the FLASH purification system, like an engine in a car. If you want to do a good job, you must first sharpen the tools. Choosing the correct FLASH purification column is the most critical part of the whole purification process. And choosing the right...

Monday 20 January 2020

As we know, five steps required for solid phase extraction cartridge: sample preparation, activation or equilibration of the column, loading, rinsing and eluting the compound of interest. There is no uniform regulation for that the solid phase extraction cartridge should be activated...

Monday 20 January 2020

1. Why does the retention time sometimes drift and sometimes change rapidly when analyzed by HPLC? How to solve it? About drift ① The temperature control is not good. The solution is to use a constant temperature device to keep the HPLC column temperature constant. ② The mobile phase...

Thursday 16 January 2020

Quantité : 30 sets/mo - Prix : 1500USD-30500USD

The post lifting bin mixer can automatically complete the functions of lifting, mixing and lowering, and is ideal mixing equipment for the solid preparation of the pharmaceutical industry. This model can be fully automated and only needs to input relevant data on the control screen...

Thursday 16 January 2020

Highlights of HAWACH flash column HAWACH flash column is packed with proprietary technology for automatic packing. The column bed is compact and uniform, has no “ditch flow effect”, with high resolution and good reproducibility. Different particle sizes of normal phase and reversed-phase...

Tuesday 14 January 2020

The sample shall be dissolved as much as possible in solvents that are mutually soluble with the mobile phase. Except for special designation, the resolution of the sample HPLC column may be reduced if it is dissolved using a strong solvent. Besides, the sample solution shall be pre-filtered...

Tuesday 14 January 2020

Quantité : 6000pc/mon - Prix : $90-$350

Vintage Wedding Dresses We have the cheap vintage style wedding dresses of your dreams. If you are just starting your journey, you've come to the right place. Sleeveless and with sleeves, tea length gowns, trendy boho, embroidered detailing, lace wedding dresses. We have them all...

Wednesday 08 January 2020

With the full line of different sizes, Hawach always provides you the high purity stationary phased packed flash column. And the column cartridge made from medical grade virgin PP and PE materials and different stationary phases prepacked will help you to meet a variety of compounds...

Tuesday 07 January 2020

Hawach HPLC column is composed of a column tube, pressure cap, clamping sleeve (sealing ring), the screen plate (filter), joint, screw and so on. The column tube is made of stainless steel. When the pressure is not more than 70 kg/cm2, thick-wall glass or quartz tube can also be used...

Monday 06 January 2020

Hawach solid phase extraction cartridges are designed for sample pretreatment to remove or minimize sample matrix and other interferences to “clean up” a sample prior to analysis. This procedure can also concentrate an analyte to achieve the desired sensitivity range of an analytical method...

Friday 03 January 2020

Operation of HPLC Columns In daily separation analysis, it is significant to properly use column, or the service life of the column efficiency of it can be directly affected. In the course of column loading, unloading or replacement, strong mechanical vibration should be prevented...

Tuesday 17 December 2019

Quantité : 100 - Prix : USD3-50

Acrylic Digtal and Electronics Display Stand & Base Most of the display rack designs for electronic products are: LED display stand, rotating display stand, ladder type display stand, L-shape display stand, display case, mobile phone bracket, common base of electronic products...

Friday 13 December 2019

FLASH column is a sample pretreatment technology developed by the combination of liquid-solid extraction and column liquid chromatography. It is mainly used for sample separation, purification and concentration which has been widely used in medicine, food, environment, commodity inspection...

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...

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...

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

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

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

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...

Monday 09 December 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...

Wednesday 13 November 2019

Quantité : 5000 ton/p - Prix : ＞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...

Wednesday 06 November 2019

Quantité : 10000pcs - Prix : 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...

Wednesday 06 November 2019

Quantité : 10000pcs - Prix : 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...

Wednesday 06 November 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...

Wednesday 06 November 2019

Quantité : 500square - Prix : 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...

Sunday 13 October 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...