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Wednesday, August 14, 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...

Saturday, August 10, 2019

Quantity : Proofing b - Price : 200-1500CNY

What is High Tg PCB When the temperature rises to a certain area, the substrate will change from "glass state" to "rubber state", and the temperature at this time is called the glass transition temperature (Tg) of the plate. That is, Tg is the highest temperature (°C) at which the...

Saturday, August 10, 2019

Quantity : Proofing b - Price : 200-1500CNY

Among the large-scale use of PCI and optical modules and cable sockets, the gold fingers PCB has been divided into: long and short gold fingers, broken gold fingers, split gold fingers, gold finger plates in the process of processing, need to pull gold-plated wire, conventional gold...

Saturday, August 10, 2019

Quantity : Proofing b - Price : 200-1500CNY

Half hole pcb: The walls of the PTH holes on the PCB are plated with Half-hole formed by smooth and complete metal forming.The Half hole process on the edge of the board is already a mature process in PCBSKY PCB manufacturing processing. How to control the quality of the product after...

Friday, August 09, 2019

Dongjin OPzS Tubular Flooded and maintenance-free OPzV Tubular Gel batteries provide proven performance and reliability in the most demanding renewable, stationary and deep cycle telecom applications. The OPzS and OPzV batteries feature tubular grids and multi-tube gauntlets that...

Friday, August 09, 2019

Lithium batteries are primary batteries that have metallic lithium as an anode, they are also referred to as lithium-metal batteries. Lithium-Ion Battery offers up to 20 times longer cycle life and five times longer float/calendar life than a lead-acid battery, helping to minimize...

Friday, August 09, 2019

Dongjin Lithium iron Phosphate battery (LiFePO4) is comprised by cells of 3.2V each. LFeLi Battery offers up to 20 times longer cycle life and five times longer float/calendar life than lead acid battery, helping to minimize replacement cost and reduce total cost of ownership. Lithium-Ion...

Friday, August 09, 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, August 09, 2019

An automotive battery is a rechargeable battery that supplies electrical current to a motor vehicle. Its main purpose is to feed the starter, which starts the engine. Dongjin maintenance-free QW series are specially designed as the starting batteries for cars, with the advanced plate...

Friday, August 09, 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, August 09, 2019

Quantity : at least 1 - Price : 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...

Thursday, August 08, 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...

Tuesday, August 06, 2019

Quantity : 1 million - Price : Small tablet: 1.9~30

One-click erasable drawing pad, keep your hands clean! Erase your image with the touch of a button and a friendly flash from the liquid crystal display - COOL! It's an accurate helper for study, for work, for drawing and writing. HOWEASY One-click Erasable touch writing pad is a reusable...

Tuesday, August 06, 2019

Quantity : 100000TM - Price : 50USD

Uses of Diethanolamine Diethanolamine similar to triethanolamine (T775580) is used as a surfactant. It also has the potential to be a corrosion inhibitor by means of chemisorption. Definition of Diethanolamine ChEBI: A member of the class of ethanolamines that is ethanolamine having...

Wednesday, July 31, 2019

- Description of Floating Ball Valve: - ZECO floating ball valve has two seats supporting the ball. Under medium pressure, the ball can be pressed tightly to the sealing surface for sealing at the outlet end. ZECO floating ball valve is suitable for the condition of temperature from...

Friday, July 26, 2019

As we all know moisture in the house can create humidity,and this muggy air can make you uncomfortable especially on those warm summer days, the moisture in the air makes it feel much hotter than what the thermometer says.Aside from the lack of comfort, a rise in excess air moisture...

Tuesday, July 23, 2019

Introduction of the flake graphite Flake-graphite is probably the most familiar of the natural flake graphite materials. Most people are familiar with the finely powdered graphite used as a lock lubricant, or the “lead” in pencils. Both of these products typically contain natural...

Monday, July 15, 2019

The sample vials were cleaned according to different contamination levels. Generally, the cleaning method is selected according to the degree of pollution. If the cost is adequate, it is best to use a new one every time. Solution method of cleaning sample vials: 1. Rinse with running...

Monday, July 08, 2019

1.Classification of extraction thimbles The extraction thimble, as its name implies, is a cylindrical element used for extracting. According to the material, it can be divided into three categories: cellulose exaction thimbles, glass fiber exaction thimbles, and quartz fiber exaction thimbles...

Monday, July 08, 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....

Friday, July 05, 2019

We recommend materials and applications of two kinds of extraction thimbles in Hawach. The material of extraction thimbles Due to different materials of extraction thimbles, two types of extraction thimbles are sold in the Chinese market. Cellulose extraction thimbles: high-grade...

Wednesday, July 03, 2019

The FILTSTAR series syringe filter is extremely low HPLC extractable and specially designed to support the filtration of viscous samples, hard-to-filter samples which with high solids content. Medical PP housing with imported membrane filter media helps to guarantee the filter cleanness...

Tuesday, July 02, 2019

Pip ettes are often used in laboratories, schools, research institutes, hospitals, etc. Among the many pipette types, multi-channel pipettes are pipettes with multiple tips, so some users are in use. It is found that the pipette tip suction amount is inconsistent. What causes the...

Tuesday, July 02, 2019

The key to regenerating contaminated HPLC columns is to know the nature of the contaminants and to find the right solvent to remove. If contamination is caused by the accumulation of strongly retained materials during repeated injections, simple steps to remove these contaminants...

Monday, June 24, 2019

Price : USD44,000 to USD17,0

Since Hunan Teila Heavy Industry Machinery Service Co., Ltd. was established, Teila is always committed to concrete pumps. Our main products include truck mounted pumps, trailer pumps, line pumps, mixer trucks and so on. The brands involved are well-known top brands both in domestic and overseas...

Monday, June 24, 2019

Vacuum filtrations are based on the principle that oil and water vaporization temperature is different (water vaporization temperature is lower than oil vaporization temperature) under the same pressure. Vacuum filtrations are a kind of paper filter equipment with the features of...

Sunday, June 23, 2019

As we all know moisture in the house can create humidity,and this muggy air can make you uncomfortable especially on those warm summer days, the moisture in the air makes it feel much hotter than what the thermometer says.Aside from the lack of comfort, a rise in excess air moisture...

Thursday, June 20, 2019

Basic Knowledge of Vacuum Filtration Based on the principle that under the same pressure (vacuum degree), the vaporization temperature of the water is lower than that of oil, scientists make practical equipment which is called vacuum filter. In fact, vacuum filtration is the most...

Tuesday, June 18, 2019

We know that the low temperature chillers are complicated equipment. Even the switch process, if not according to the standard of operation or with no special maintenance, will inevitably lead to a decline in the refrigeration efficiency of the low temperature chillers and will greatly...

Saturday, June 15, 2019

- Automotive - Applying advance techniques of feeding and handling, flexible conveying, robot integration, visual inspection and laser marking, Yiheda provides automation solutions of automotive parts production to customers according to the features of products and their demands...