COLUMN CNC DOUBLE - 13960 Annonces

Friday 09 August 2019

An Electric Bike is a fantastic way to reduce your carbon footprint and to be green. Dongjin group has been manufacturing suitably rated, reliable, affordable and safe E-Bike Batteries with long cycle service life, good high rate discharge performance and better float charging service...

Friday 09 August 2019

Dongjin AGM VRLA batteries are Valve Regulated Lead Acid battery with Absorbent Glass Mat separators. With stable quality and affordable cost, our AGM UPS batteries are widely used in all ranged of UPS, energy storage and telecommunication systems. Advantages of AGM VRLA battery Long...

Friday 09 August 2019

Quantité : at least 1 - Prix : 1.5~4800 USD

Dongjin AGM deep cycle battery is optimized for being discharged over a longer period of time. The specially designed plate formula increases cyclic life. With stable quality and affordable cost, our AGM deep cycle batteries are widely used in all ranged of energy storage. Advantages...

Friday 09 August 2019

- Some Tips In QuEChERS D-SPE? - Why choose anhydrous magnesium sulfate as a water remover? In the d-SPE purification process, the moisture content plays a crucial role in the purification effect of PSA. The lower the moisture content, the better the purification effect of PSA. Experiments...

Friday 09 August 2019

Reversed-phase chromatography (RPC) contains any chromatographic method using a non-polar stationary phase. The word “reverse” has a historical background. In the 1970s, most liquid chromatography was performed on unmodified silica or alumina. Their surface chemistry is hydrophilic...

Thursday 08 August 2019

Basic information This double flapper check valve can be installed at the water outlet of the pump or the water outlet pipe to prevent backflow of the medium. Features 1. Switch can be up to 100,000 times; 2. Full flow area, low flow resistance; 3. Less likely to accumulate debris; 4...

Thursday 08 August 2019

More than 90% of gas chromatographic problems occur in the inlet, and it is necessary to see which problems may occur in the inlet. Problem No.1: Leak If there is a leak, the pressure on the inlet may not be maintained, and the instrument will alarm. If the problem cannot be solved in time...

Thursday 08 August 2019

Flash columns adopt high-capacity silica gel for precise filling, which has very excellent separation and purification performance. The specific surface area of high-capacity spherical silica gel is 40% higher than that of ordinary spherical silica gel, and the sample loading is twice...

Thursday 08 August 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...

Wednesday 07 August 2019

Quantité : At least o - Prix : 50-150000 USD

Stationary scissor lift AL1 AL2 AL3 Designed for industrial heavy duty applications(as part of a production process,for machine feeding or stacking etc.). Double acting hydraulic cylinders. Lifting limit switch. Aluminum table frame protects workers from injury by cutting off power...

Wednesday 07 August 2019

We are suppliers of best quality A4 copy paper 80gsm75gsm,70gsm and looking for serious buyers in need of our papers contact with us for more details. Quality : Imported 100% Virgin Wood Pulp Whiteness : 102-104%, natural white, Capability : High speed copying 100ppm, laser capable...

Tuesday 06 August 2019

Quantité : At least o - Prix : 50-150000 USD

Narrow Aisle Lift Truck CQDH15C (double scissors) Detailed Specifications Model CQDH15C (double scissors) Drive type battery battery Load capacity/Rated load Q(kg) 1000 1000 Load centre distance c(mm) 500 500 Load distance, centre of drive axle fork x(mm) 159 135 Tyre size...

Tuesday 06 August 2019

In recent years, the application of HPLC in inorganic analysis has developed rapidly, and the use of flash columns has been more and more widely because of a method that can rapidly determine heavy metal elements in environmental water samples. Matters needing the attention of flash columns 1...

Tuesday 06 August 2019

HPLC is more suitable for the separation and analysis of substances with the high boiling point, poor thermal stability, physiological activity, and relatively large molecular weight. Hawach HPLC columns are widely used in the analysis of nucleic acid, peptide, lactones, polycyclic...

Monday 05 August 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...

Friday 02 August 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...

Friday 02 August 2019

Usually, the sample contains something that is not of interest to the analyst. Salt, lipids, lipid-containing substances, humic acid, hydrophobic proteins, and other biological substances are some substances that may interact with the HPLC column in use. These substances have less...

Thursday 01 August 2019

There are two different cases of retention time: retention time drift and retention time fluctuations. The former means that the retention time changes only in one direction, while the latter refers to the fluctuation of the retention time without a fixed law. It is often helpful...

Thursday 01 August 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...

Wednesday 31 July 2019

- Description of Trunnion Mounted Ball Valve: - ZECO trunnion mounted ball valve is suitable for natural gas, oil and gas, chemical industry, metallurgy and other industries, sealing structure is divided into pre-ball sealing structure, post-ball sealing structure and double sealing structure...

Wednesday 31 July 2019

- The Selection Principle of Silica Gel Column - Commonly, the maximum sample loading volume of a silica gel column is about 1/20 of the volume of the column's silica gel. However, as a practical matter, specific sample loading volume should be decided by each constituent's degree...

Wednesday 31 July 2019

Bag filter housings are multi-purpose filter equipment with the features of novel structure, small size, simple and flexible operation, energy saving, high efficiency, airtight work and strong adaptability. Otherwise, they are very convenient to replace the filter bags and there is...

Tuesday 30 July 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...

Thursday 25 July 2019

Quantité : 50 - Prix : $115

Mini Rotary Tattoo Machine with Cartridge Grip About the product - It adopts coreless motor with strong power and stable performance. - CNC integrated carving process, good workmanship, exquisite appearance, smooth and not rough details, wear-resistant, long-term use without deformation...

Thursday 25 July 2019

Quantité : 50 - Prix : $165

Hummingbird BRONC Cartridge Tattoo Machines FEATURES * CNC crafed machine body from aircraf aluminum, bright finished & anodized. * Detachable motor bolt for ease of maintenance. * Powered by Maxon Motor or stnadard motor. * 3mm drive bar, compatible with most cartridge grips...

Thursday 25 July 2019

Quantité : 50 - Prix : $102

Tattoo Pen with Core-less Motor About the product - Core-less Motor Inside, Heat-less, Powerful, Stable and High Quality. - The outer casing is made of aluminum alloy by CNC, Exquisite gloss, Bring you a good touch - Detachable, Can be unscrewed, maintenance or replace the motor...

Thursday 25 July 2019

Quantité : 50 - Prix : $42

Cheap Tattoo Pen Mabuchi Motor About Products: --Low noise, long-lasting stability power strong. --Strong motor and virtually silent when operating. --The use of RCA interface and aluminum shell,the use of a long time will not be deformed, good electrical conductivity. --CNC integrated...

Friday 19 July 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...

Tuesday 16 July 2019

Particle size measurement using static light scattering The particle size distribution as a parameter to specify a powder or dispersion plays a central role in many applications. Examples are construction material (sands, cements), pharmaceutical development, lime stones, ceramics...

Monday 15 July 2019

Laboratory workers use a membrane to filter two phases. Actually, the membrane is a kind of media. According to different aperture sizes, filter membranes can be divided into the microporous membrane, ultrafiltration membrane, nanofiltration membrane a nd reverse osmosis membranes...