COLUMNS - 1398 Annonces

Samedi 16 mai 2020

Quantité : 6000pc/mon - Prix : 100USD

The thrie beam guardrail is the main form of the semi-steel guardrail. It is a continuous structure in which corrugated steel guardrails are spliced to each other and supported by columns. The corrugated fence of the expressway has a soft phase and strong ability to absorb collision energy...

Samedi 16 mai 2020

Quantité : 6000pc/mon - Prix : 100USD

The column is usually square and cylindrical, and can be cut according to the specific needs of the road. It is integrated with the guardrail. The specifications of the guardrail column are: 4320×310×85×3.0, 4320×310×85×, 4.0, usually hot-plated. The zinc square tube has the advantage...

Vendredi 15 mai 2020

Quantité : 4.000.000 - Prix : 0,26 €

PRODUITS AVEC TOUT LES CERTIFICAT EUROPEEN Les masques faciaux sont non tissés Résistance aux fluides modérée: 120 mmHg Barre de nez adaptable Ajustement parfait Acheteurs en gros, merci de bien vouloir diriger pour le prix. produit disponible en france par minimum de commande 50000 pcs : ...

Lundi 27 avril 2020

Quantité : 1 - Prix : US $8,000 - 800,000

DETAILS Features: Length: 28m Width: 27m Height: 16m Occupied area: 756㎡ Spiral tube slide: 3 sets Double straight: 1 set Kids spiral slide: 1 set Medium water house is for teenagers and adults. The total length is about 26m, width is about 26m, height is about 10m, and the floor...

Lundi 27 avril 2020

Quantité : 1 - Prix : US $8,000 - 800,000

DETAILS Features: Name: small water house Length: 19m Width: 18m Height: 6m Occupied area: 210㎡ Spiral tube slide: 2 sets Double straight: 1 set Small water house is mainly for kids. The total length is about 18m, width is about 9m, height is about 6m, and the floor space is about 210㎡...

Lundi 27 avril 2020

Quantité : 1 - Prix : US $8,000 - 800,000

DETAILS Features: Name: big water house Length: 28m Width: 34m Height: 16m Occupied area: 952㎡ Spiral tube slide: 5 sets Double straight: 2 set Kids spiral slide: 2 set Huge water house is mainly for adults. The total length is about 42m, width is about 33m, height is about 20.6m...

Jeudi 09 avril 2020

Advantages of HAWACH Flash Column 1.Impurity dissolution rate: the materials are all medical-grade PP and PE, which have strong corrosion resistance and low impurity content. There is low probability of impurity dissolution. 2.Diversity of options: a large number of series/types,...

Mercredi 08 avril 2020

Importance of Proper Models of HPLC Column In practical application, proper models of the HPLC column have a great influence on the performance or operation of the HPLC column. Improper models could greatly reduce the filtration effect. The HPLC column of high purity silica gel matrix...

Mercredi 01 avril 2020

The properties of the reversed-phase filler are determined by the matrix and the substrate. the particle shape, size, pore size and pore size distribution of the matrix, specific surface area, residual silicon hydroxyl concentration, and the content of impurity ions will all have...

Mercredi 25 mars 2020

PureFlash series: silica gel construction and phase column. For example, C18(spherical inlet and irregular home-made), C4, C8, NH2, CN, HILIC, and oxide which are all imported fillers, corresponding to the high-end market. DepuFlash series: silicone construction and phase columns...

Mardi 24 mars 2020

Remove the column outlet end If the pressure does not drop, the HPLC column is blocked. Treatment: if the buffer salt is blocked, flush 95% water to normal pressure. If some strongly retained substances cause blockage, the mobile phase stronger than the current one should be used...

Mardi 24 mars 2020

The capacity of the SPE cartridge refers to the adsorption amount of the column packing. For silica-based solid-phase extraction columns, the capacity is generally 1 to 5 mg/100 mg, which means that the column capacity is 1% to 5% of the mass of the packing. The capacity of the bonded...

Lundi 23 mars 2020

Advantages of flash column FLASH chromatography is used for preparation and has the following advantages: 1. Fast speed, generally 1/8 of the separation time of open column chromatography, saving time, slow sample change and decomposition 2. Large preparation volume, at least as compared...

Samedi 21 mars 2020

Quantité : 1 - Prix : USD18000-28000

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

Samedi 21 mars 2020

Quantité : 1 - Prix : USD18000-28000

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, movable stand up desk can be easily moved to the desired height by pressing a button...

Samedi 21 mars 2020

Quantité : 1 - Prix : USD18000-28000

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...

Mercredi 18 mars 2020

Flash column is usually used for the chromatography experiment to separate the complicated compounds by pressurizing air. The hot air enters the stirring, crushing and drying chamber from the bottom of the dryer at a suitable spraying speed from the inlet pipe, which produces strong...

Mercredi 18 mars 2020

Widely used to remove particles from a liquid sample and avoid damage to equipment at the same time, syringe filter is affordable tool in the labs, which the scientists can use for small-volume filtration. You can find two different types of filters, one is with which you can recover your sample...

Mardi 17 mars 2020

Cleaning and storage of HPLC column Have a good understanding of the sample made, and wash it with the mobile phase that has the strongest eluting capacity for the sample. For silica gel HPLC column, first wash away the polar impurities with methanol, then use dry dichloromethane...

Mardi 17 mars 2020

How to understand the chromatographic separation? Put it in short, the more similar the separated substance to the stationary phase, the longer the residence time on it. In this way, different substances in a complex mixed solution can be separated according to time, and the separated...

Samedi 14 mars 2020

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...

Mercredi 11 mars 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...

Mardi 10 mars 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...

Mardi 21 janvier 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...

Lundi 20 janvier 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...

Lundi 20 janvier 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...

Jeudi 16 janvier 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...

Jeudi 16 janvier 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...

Mardi 14 janvier 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...

Mardi 14 janvier 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...