COLUMNS - 1404 Annonces

Monday 23 September 2019

The reason for the QuEChERS matrix effect in the liquid state is generally considered to be due to the non-volatile components in the matrix and the substance to be tested, which competes in the ionization process. The matrix effect in gas phase temperament is generally attributed...

Saturday 21 September 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, WENZHOU HUASHANG STEEL CO., LTD. has the first-rate...

Friday 20 September 2019

Syringe filter can be used in the analysis of high performance liquid chromatography and IC. It is an important step in sample pretreatment to filter sample solution. The syringe filter with high quality is produced by using the most advanced detection means and production technology...

Friday 20 September 2019

Hawach spherical C18 flash column is a typical column product used for the preparative separation, which has undergone rigorous mass determination before sales. The performance parameters of the flash column are carefully controlled and rigorously tested as well. Basic Information...

Friday 20 September 2019

Silica matrix HPLC columns are generally compatible, but organic polymer matrix columns may expand or contract in some solvent combinations, which will affect their chromatographic behavior. Wash each solvent system at least 20 volumes. Because some solvent systems are highly viscous...

Thursday 19 September 2019

Description of Sit Stand Desk Converter： Sit stand desk converter can turn your desk into a healthy workstation in a few minutes. Adjustable standing computer workstation supports single, double, three, or four panel displays and function button height adjustment. This Workstation-...

Thursday 19 September 2019

Description of One Motor One Leg Electric Height Adjustable Standing Desk: One motor one leg electric adjustable standing desk is suitable for platform. Supported by YN-D07 environmental control box, it can be easily moved to the desired height by pressing a button on the controller...

Thursday 19 September 2019

When you understand the functions of the lift standing desk, and the benefits of using the lift standing desk. We Shared how to choose a good lift standing desk, through which aspects to identify the advantages and disadvantages of lift standing desk frame. Finally, we need to share...

Thursday 19 September 2019

Quantité : 1 - Prix : Product: 1-100 yuan

The SMC cable bracket is a combination consisting of a cable bracket, a post and a fixed pin. The material of the column and the pin is also made by the high temperature pultrusion of the FRP composite. The column can be arbitrarily cut length according to the needs, the height...

Thursday 19 September 2019

The determination of 10 plant polyphenols in tobacco samples by solid phase extraction and high-performance liquid chromatography as below: Plant polyphenols are important substances in tobacco. The content of polyphenols in tobacco has an important influence on tobacco quality. Therefore...

Thursday 19 September 2019

It is a liquid chromatography using a chemically bonded phase as a stationary phase, which is formed by chemically reacting an organic molecule to a surface of a carrier (silica gel) by a covalent bond to form a uniform, firm monolayer thin layer. The separation mechanism is both...

Wednesday 18 September 2019

In the analysis of HPLC, the packing size of chromatographic column is small, and it is easy to be blocked by impurity particles. Therefore, samples and solvents need to be pre-filtered to remove particulate pollutants and protect chromatographic columns and instruments. Ion chromatography...

Wednesday 18 September 2019

In chromatographic experimental analysis, a device that can quantitatively feed a sample bottle into a chromatographic column is called a sample vial. Sample vials are divided into manual and automatic sample vials. The automatic sample vial is an intelligent and automatic sampling...

Wednesday 18 September 2019

Flash column from Hawach Scientific features in high compatibility, safety, and flexibility, most of them can be used for separation of different compounds with good flow distribution. Customized packing and clean package make the super clean environment and better shipping cost,...

Tuesday 17 September 2019

Adsorption chromatography uses the difference in adsorption capacity of substances in stationary phase adsorption to achieve separation of the mixture. The chromatographic process of adsorption chromatography is the process in which the mobile phase molecules compete with the material...

Monday 16 September 2019

Hawach Scientific provides a wide selection of flash columns, they are a quick and easy way to separate complex mixtures of compounds, and often used on a preparative scale to provide better separation and cuts down on the amount of time required to run column. We committed to providing...

Monday 16 September 2019

Reversed phase chromatography (RP) is the most widely used technique in high-performance liquid chromatography (HPLC) up to now, mainly because it is suitable for the analysis of most of them. Nonpolar substances and many ionizable and ionic compounds. Most stationary phases used...

Monday 16 September 2019

The extraction is divided into liquid phase extraction (LLE) and solid phase extraction (SPE). SPE technology is a column chromatography separation process. The technology is a combination of liquid-solid extraction and column liquid chromatography. The combination of this technology...

Thursday 12 September 2019

As an important branch of chromatography, high-performance liquid chromatography (HPLC) has become an important application of separation and analysis technology in the fields of chemistry, medicine, industry, agriculture, commodity inspection, and law inspection. Features of high-performance...

Wednesday 11 September 2019

Quantité : 1 - Prix : 600~3000RMB

PSST explosion-proof telephone is designed to provide safe, reliable voice communication for both indoor and outdoor hazardous areas. featuring a sturdy non-sparking, impact and shock resistant fibreglass-reinforced polyester cast body, silica gel or stainless steel keypad, durable handset...

Wednesday 11 September 2019

Flash chromatography is one of the methods in the preparation of liquid chromatography and is usually used for the separation of organic compounds. Flash chromatography has the advantages of ease of operation, low cost, and fast analysis. There are few other techniques for purifying...

Wednesday 11 September 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...

Wednesday 11 September 2019

The structure of the SPE cartridge is mainly divided into four parts: column tube, sieve plate, adsorbent and supporting device. The characteristics of each part are briefly introduced below. Column tube: A carrier for the adsorbent, made from serum grade polypropylene. Commonly used...

Tuesday 10 September 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...

Saturday 07 September 2019

There are bubbles in the mobile phase, the pump is turned off, the pressure relief valve is opened, the purge button is turned on, the degas is cleaned, the bubbles are continuously ejected from the HPLC column, and the mobile phase enters the mobile phase. No matter how many times...

Wednesday 04 September 2019

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

- Cheap Plus Size Bridesmaid Dresses - 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 Style Dress with Lace Top #6061...

Tuesday 03 September 2019

Chemical properties of the chromatographic column could affect the performance of the C18 HPLC column. Performance factors of C18 HPLC columns: bonding type Single tooth bonding can improve the mass transfer rate and accelerate column balance. Double tooth bonding can increase the...

Wednesday 28 August 2019

Quantité : 1 - Prix : 500USD

Diamond 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, we recommend...

Tuesday 27 August 2019

4 axis CNC router for full automatic 3D machining of carving, engraving, marking, cutting, turning, drilling, milling or grooving. 4 axis cnc machine is available for wood (softwood, hardwood, solid wood, plywood, MDF),fabric, leather, PVC. And 1530 cnc router are widely used in industrial...

Friday 16 August 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...