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Sábado 28 septiembre 2019

Depending on the packing of the HPLC column. The following column types are available on the market: 1. Silica gel HPLC column: Silica gel is the earliest chromatographic column packing used in liquid chromatography. It has a wide range of applications. However, it can only be used...

Jueves 26 septiembre 2019

- Reversed-Phase Principle - The reversed-phase filler is a kindly of nonpolar filler such as C4, C8, C18 aliphatic chain which is bonded on the silica gel. Nonpolar or hydrophobic compounds are strongly reserved, while polar samples are weakly reserved and go through the flash reversed-phase...

Miércoles 25 septiembre 2019

Cantidad : 50000/mont - Precio : usd3-10

Chemical Earth Electrode System Performance characteristics and working principle of Chemical Ground Electrode: 1. Chemical ground electrode 2. Existing soil 3. Special filler 4. Ions diffuse around 5. Expand the conductive range of the soil Chemical Grounding electrode (chemical...)

Viernes 20 septiembre 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...

Jueves 19 septiembre 2019

Cantidad : 1 - Precio : Product: 1-100 yuan

BMC/SMC Moulding Description: We mainly use SMC injection molding and pressure molding as the methods. When designing the flow channel and parting surface, we think that the cavity pressure should be as small as possible, especially some small ribs, as well as the smooth exhaust,...

Miércoles 18 septiembre 2019

Hawach SPE Cartridges are made of medical grade PP and forming in one time. Frits are made of UHMW-PE. There is a variety of models to choose, such as Normal Phase Cartridge, Reversed Phase Cartridge, Ion Exchanges Cartridge, Mixed Mode Cartridges and so on. Here, We would like to...

Miércoles 11 septiembre 2019

Cantidad : 300pcs/MOQ - Precio : 1.5-10usd

PVC coil mat carpet is a carpet made of PVC resin material. It is made of PVC and its copolymer resin as the main raw material, with fillers, plasticizers, stabilizers, colorants and other auxiliary materials. It is formed on a continuous sheet of substrate by uniform mixing, coating...

Martes 10 septiembre 2019

donut filler for sale Australia -Yufeng The donut filler universal voltage, plug and play, it is friendly using in the store. All hoppers are crafted in easy-to-clean reinforced plastic and have also been designed for easy viewing of the filling level inside. It can recycled materials...

Martes 03 septiembre 2019

The basic principle of SPE cartridges is that the liquid sample is made to pass through the adsorbent to retain the tested substance, and then the impurities are washed away with appropriate strength solvent, and then the tested substance is eluted with a small amount of good solvent...

Jueves 29 agosto 2019

PVC coil door mat carpet is a carpet made of PVC resin material. It is made of PVC and its copolymer resin as the main raw material, with fillers, plasticizers, stabilizers, colorants and other auxiliary materials. It is formed on a continuous sheet of substrate by uniform mixing...

Viernes 16 agosto 2019

- Category - In terms of the filler type, SPE column can be divided into four applications of silicone bonding matrix, polymer matrix, absorption matrix and specialized columns. Besides, the silicone bonding has four sorts—antiphase(C18 sealing end/uncapped/hydrophile, C8), positive...

Miércoles 14 agosto 2019

Physical properties of the chromatographic column could affect the performance of C18 HPLC columns. - Performance factors of C18 HPLC columns: - Silica gel purity Class A silica gel has high residual silica hydroxyl with a negative charge and high metal content on the acidic surface...

Jueves 08 agosto 2019

Chromatography is a separation and analysis method and the separation is the core. Therefore, HPLC columns are the heart of the chromatographic system. The requirements for the column are high efficiency, good selectivity and fast analysis speed. Generally, the column length of about...

Jueves 08 agosto 2019

Most common SPE cartridges are injection syringes made of polyethylene, in which there are two plugs made of polypropylene or fiberglass, with a certain amount of chromatographic adsorbent (filler) between the two plugs. SPE cartridges without sieve plate 1. Avoid “non-specific adsorption” 2...

Martes 06 agosto 2019

Yufeng INB-M cake filler for bakeshop INB-M cake filler is used for filling cream cheese, ketchup, raspberry, strawberry and other fruit jams. It had approved CE and FDA certificate. Mini size, easy clean, using friendly, competitive price, precise filling, is not the bakeshop best choice...

Martes 06 agosto 2019

Yufeng factory directly selling INB-M mini jam filler Now! Yufeng recruitment of overseas agents and distributors, we provide the good price and superb quality for you to selling. If you are interested in it, welcome to contact us, more information please enter the website: www.yufengbakery...

Martes 06 agosto 2019

Precio : face to face

Yufeng INB-M automatic pastry filler The power base has a step motor, filling amount will more accurate. It can injecting cottage cheese, creams, custard, jelly, ketchup, mustard, pudding and yogurt, chocolate and etc. Whole machine just around 8kg. Standard hopper capacity 6L ...

Lunes 05 agosto 2019

One of the main factors affecting the life of the liquid chromatographic column is the mobile phase. There are three aspects of the mobile phase factors. The pH value of the Mobile Phase The fillers of different substrates apply to different pH value range. Under normal temperature...

Viernes 02 agosto 2019

Flash column pressure has something to do with the form of silica gel, the mesh number, the synthesis condition of filler, the condition of column packing, the mobile phase, and the temperature when analyzing. Different manufacturers' new flash columns, their column pressures may...

Jueves 01 agosto 2019

It is important for the experimenters to use and maintain chromatographic columns correctly. They should focus on many some things so as to protect the columns in the using process. Here we talk about several attentions. Avoid changing pressure and temperature dramatically and any...

Martes 30 julio 2019

The improper use of chromatographic columns will make the columns decrease or lose effectiveness. Generally speaking, the columns always have problems at the end of them. If we can install a short column with the same stationary phase as the analysis column in front of analysis column...

Viernes 19 julio 2019

Bonded-phase chromatography is a liquid-liquid chromatography method in which a stationary phase is covalently bound to a carrier particle, which overcomes the mechanical shock in the distribution chromatography, the constant loss of the stationary phase and the gradual change of...

Lunes 15 julio 2019

All the technique cores of HPLC from Hawach Scientific are focused on the characteristics of the chromatogram column. Quality Recognition This is shown as the fact that terminal customers have published more than 500 papers on those journals at home and abroad. For famous oversea journals...

Viernes 12 julio 2019

Today, Hawach want to talk about the pre-treatment process for pesticide residue detection from the perspective of food safety – QuEChERS, and also tell you how to pre-treat pesticide residue food. Introduction The present analytical methods and determining techniques, pre-treatment...

Jueves 11 julio 2019

SPE column or SPE cartridges are based on liquid-solid phase chromatography theory, it is a kind of extraction, separation, concentrated sample preparation unit. Mainly used in sample pretreatment of various foods, agricultural and livestock products, environmental samples and target...

Miércoles 10 julio 2019

donut filler with jelly hopper for sale -Yufeng INB-M This donut filler power base has LED readouts that provide clarity when looking at orders. The digital entry keypad makes it easy to enter the correct information. Reverse pull back rrevents dripping after you are done filling...

Miércoles 10 julio 2019

Power Base for jelly filling machine-Yufeng （INB-M） The jelly filler power base has solid state technology that ensures accuracy and allows for a variety of applications using normal and automatic cycling. The donut filler power base works with cream cheese, custard, jelly, molasses...

Lunes 08 julio 2019

People should face are a lot of problems when using SPE cartridges. As a consequence, we will talk about why the cartridge has a low recovery rate in the experiments. The first reason for the low recovery rate is that the target object does not remain sufficiently on the fillers....

Viernes 05 julio 2019

When the polarity of the stationary phase is greater than the polarity of the mobile phase, it can be called normal phase partition chromatography or simply normal phase chromatography. If the polarity of the stationary phase is less than the polarity of the mobile phase, it can be...

Jueves 04 julio 2019

The filler of polymeric HLB SPE cartridges produced by a special copolymerization technology contains a certain proportion of the hydrophilic group and the hydrophobic group. Hydrophobic divinyl benzene structures retain nonpolar compounds and hydrophilic n-vinyl pyrrolidone structures...