SILICA - 903 Anuncios

Viernes 29 mayo 2020

Cantidad : 1pcs - Precio : 40-200usd

Right angle prism turn light through 90° by internal reflection from the hypotenuse, or 180° from two right angle surfaces. When the light incident angle is perpendicular to the right angle surfaces, the light will be reflected at the surface of glass/air interface. When the input...

Viernes 22 mayo 2020

Cantidad : more than - Precio : 3000-6500 euro per M

Description of Iron Ore Concentrate Iron ore concentrate is produced from the magnetite iron ore in the beneficiation process. When the iron ore is mined, first it will be crushed by a crusher, after a preliminary screening, it is sent to the large gyrator crusher, and then the broken...

Viernes 22 mayo 2020

Cantidad : 200,000 pc - Precio : USD 150- 600

Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water. RO membrane technology is one of the most powerful tools to solve the world water crisis. We have rich experiences in RO...

Jueves 09 abril 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,...

Miércoles 08 abril 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...

Miércoles 25 marzo 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...

Martes 24 marzo 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...

Lunes 23 marzo 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...

Martes 17 marzo 2020

Cantidad : 200,000 pc - Precio : usd160-500

Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water. Ro membrane technology is one of the most powerful tools to solve the world water crisis. We have rich experiences in RO...

Martes 17 marzo 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...

Martes 17 marzo 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...

Miércoles 11 marzo 2020

Glass Beads for Road Marking Paint are a kind of fine glass sphere formed by melting glass sand (waste glass) at high temperatures. It is spherical under the microscope, colorless, transparent, and the refractive index is 1.5-1.64. Between 44 and 1400 microns in diameter. Ten Roads...

Miércoles 11 marzo 2020

The high-performance hollow glass microspheres, a kind of ultra-light inorganic non-metallic powder with hollow "ball-bearing" shapes, have been developed into a new type of high-performance lightweight material and widely applied in recent years. It will be the main direction for...

Miércoles 11 marzo 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...

Martes 10 marzo 2020

1.Mixed-mode cation exchange r: A mixed adsorbent having strong cation exchange and reverse retention, which is highly selective for alkaline analytes, stable in organic solvents. 2.Weak cation exchanger: Weak cation exchange and reverse retention complex mechanism, which is used...

Miércoles 22 enero 2020

The sealing property of the headspace vial is better than that of the threaded vial, and the rubber or silica gel has good re-sealing after the puncture, so it is ideal to preserve the reagents. If some of the organic solvents in use will corrode the silicone or rubber bottle pad...

Martes 21 enero 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...

Jueves 16 enero 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...

Martes 14 enero 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...

Miércoles 08 enero 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...

Lunes 16 diciembre 2019

The capacity of the SPE cartridge refers to the adsorption amount of the SPE cartridge packing. For silica-based SPE cartridge, the capacity is generally 1 to 5 mg/100 mg, that is, the cartridge capacity is 1%~5% of the mass of the packing. The capacity of the bonded silica ion exchange...

Viernes 13 diciembre 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...

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 04 diciembre 2019

Dongjin Gel series battery is manufactured with special separator and colloidal or foamed silica. The batteries use silica gel to immobilize the electrolyte inside the battery. The proven silica gel technology improves battery cycle life and performance at cold ambient temperatures...

Martes 03 diciembre 2019

Cantidad : 800pcs - Precio : 3-50usd

The feature of JH-D03 BTE FM Balanced Armature Loudspeaker Open Fit Hearing Aid Hearing Amplifier 1. Modeling exquisite, the button is obvious, easy to operate; 2. Open fit hearing aid can change the ear tube as you need, comfortable wear; 3. Corresponding uncomfortable threshold...

Martes 03 diciembre 2019

Cantidad : 800pcs - Precio : 3-50usd

Features of JH-907 ITE Mini Ear Amplifier 1. The lightweight and easy operation, you won't feel anything after you wear, very comfortable; 2. Corresponding uncomfortable threshold properly adjust the maximum output, protect ear， low distortion; 3. 3 different earplugs are provided...

Martes 03 diciembre 2019

Cantidad : 800pcs - Precio : 3-50USD

The feature of JH-D16 Digital 4 Modes BTE Open Fit Hearing Aid Hearing Amplifier 1.Ear zoom hearing aid Bluetooth appearance makes comfortable wear and fashionable look. 1. Ear zoom Bluetooth appearance, makes comfortable wear and fashionable look, the machine looks like a Bluetooth...

Martes 03 diciembre 2019

Cantidad : 800pcs - Precio : 3-50USD

Features of JH-113 Analog BTE Hearing Aid Hearing Amplifier 1. Behind the ear style hearing aid amplifier, easy to wear and comfortable wearing feeling in either ear; 2. Volume control key, on/ off switch, very simple design and easy operation, suitable for all people; 3.Good sound quality...