HPLC - 407 Anuncios

Miércoles 07 septiembre 2022

Quercetin Dihydrate Product Name: Quercetin Botanical Name: Sophora japonica L. CAS No: 117-39-5 Molecular Formula: C15H10O7 Molecular Weight: 302.24 Color: Yellow-Green powder Used Part: Flower Bud Purity: 95% HPLC Description: Quercetin is a type of plant-based chemical, or phytochemical...

Viernes 29 julio 2022

About Company Qyherb is devoted on the extraction of effective natural ingredients from natural Chinese herbal medicines, and natural plants with 15 years of produce experience. We focus on the natural ingredients and plant extract applied to food, functional products, dietary complement...

Miércoles 18 mayo 2022

Cantidad : 15000 piec - Precio : $5-100

It' s extracted from the root of Angelica by SFE-CO2 Extraction. According to traditional Chinese medicine, Angelica has the role of nourishing blood, nourishing bowel and defecation. It is suitable for symptoms such as blood deficiency, dizziness and palpitation, irregular menstruation...

Miércoles 18 mayo 2022

Cantidad : 15000 piec - Precio : $5-100

It's extracted from the root of Angelica by SFE-CO2 Extraction. The main component is ligustilide, linoleic acid, etc. It is currently the best-selling pharmaceutical intermediate and healthy food raw materials in the market. Angelica root essential oil is also widely used in cosmetics...

Martes 12 abril 2022

The fast switching solenoid valve is a type of multiposition valve without a public port but with dispensing ports around, a sample loop is required for such kind of valve to create a metering specific volume of fluids for a lab test, the applications are very flexible as you can...

Lunes 02 agosto 2021

¿Qué es la glabridina? La glabridina, también conocida como flavona glicirrícica, es un tipo de isoflavona. Se extrae del rizoma seco de Glycyrrhiza glabra L. La glabridina es uno de los principales flavonoides de Glycyrrhiza glabra (representa el 11%). Numerosos estudios han demostrado...

Lunes 02 agosto 2021

La rutina se extrae de las yemas secas de Sophorae Japonica. La rutina pura es un cristal en forma de aguja de color amarillo o amarillo verdoso. La rutina es un glicósido de flavonol compuesto por quercetina y el disacárido rutinosa. La rutina es un poderoso antioxidante. Ayuda al...

Lunes 02 agosto 2021

Información básica: Nombre del producto: extracto de ginkgo biloba Nombre latino: Ginkgo Biloba L. Tipo de producto: Polvo amarillo claro o marrón amarillento Parte de la planta utilizada: hoja (seca, 100% natural) Método de extracción: etanol y agua N. ° de CAS: [90045-36-6] Especificaciones...

Lunes 02 agosto 2021

La stevia (esteviósido, rebaudiósido A) es natural y se deriva de las hojas de la planta de stevia, no contiene ninguna sustancia química dañina que se encuentra a menudo en los edulcorantes artificiales. La stevia es segura para los diabéticos, se ha demostrado que ayuda a prevenir...

Lunes 02 agosto 2021

La hesperidina es un flavanoneglucósido que se encuentra abundantemente en los cítricos. Su forma de aglicona se llama hesperetina. Su nombre se deriva de la palabra "hesperidium", el tipo de fruta que producen los árboles de cítricos. Se cree que la hesperidina juega un papel en...

Lunes 02 agosto 2021

Ácido carnósico 20% Ácido carnósico 50% Ácido carnósico 60% El ácido carnósico es un fitoquímico que se encuentra naturalmente en el romero, la hierba culinaria común. Reconocido como antioxidante, el beneficio más notable del ácido carnósico es su capacidad para proteger contra los...

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 01 abril 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...

Miércoles 25 marzo 2020

Character of syringe filter 1. The PTFE membrane of the syringe filter is completely made of natural and permanent hydrophobic PTFE material. Even under a very low pressure difference, it can ensure that moist air or other gases can pass without hindrance, while the aqueous solution...

Martes 24 marzo 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...

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...

Miércoles 18 marzo 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...

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...

Jueves 12 marzo 2020

What areSyringe filter syringe filters used for? syringe filter, also known as needle filter, cylinder filter, cylinder filter membrane filter, etc., is used for sample prefiltration, clarification of the removal of particles, liquids and gases, etc. What are the advantages of using...

Martes 10 marzo 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...

Martes 21 enero 2020

Syringe filter is separation equipment which can be combined with a injector to filter out the impurities from the sample of chemically turbid solution. Syringe filter generally consists of a plastic housing and a membrane. The body of syringe filter (plastic housing) is usually made...

Lunes 20 enero 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...

Viernes 17 enero 2020

Vacuum filtration system is a kind of vacuum filtration device, which ingeniously combines all the components needed for Vacuum filtration on one body, saving space and simple operation. It is widely used in laboratories, including various microbial tests in food, medicine, beverage...

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...

Martes 07 enero 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...

Viernes 03 enero 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...

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...

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...