PRINCIPLES - 4391 ads

Thursday, December 12, 2019

QuEChERS is a streamlined technique that makes it easier and cheaper for analytical chemists to examine the pesticide residues in agricultural products. It is exploited by many professors of the American Ministry of Agriculture in 2003, especially Anastassiades. This technique shares...

Thursday, December 12, 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...

Tuesday, December 10, 2019

To select the appropriate SPE cartridge, we normally consider it from two aspects: the selection of adsorbent and specification of the cartridge. The use of appropriate adsorbent can achieve good separation between interfering substance and target component, and also meet the requirement...

Monday, December 09, 2019

The working principle of the pipette is that the piston moves through the telescopic movement of the spring to achieve aspiration and discharge. Under the push of the piston, part of the air is exhausted, and the liquid is sucked in at atmospheric pressure, and then the air is pushed...

Tuesday, November 26, 2019

Quantity : 1pc - Price : US $1 - 3,000 / Set

Basic information Venturi flowmeter is adopted in the body of a balanced valve with threaded connections to make flow adjustment more accurate and flow monitoring more convenient. Accurately balance the flow of each branch or end of the system. Features of bronze balancing valve 1...

Tuesday, November 26, 2019

Quantity : 1pc - Price : US $1 - 3,000 / Set

Basic information This underground gate valve is used as a two-way closed circuit device. Features 1. No need for sluice Wells, which reduces the amount of installation work; 2. Does not affect the traffic, and underground parts of the integration, effectively prevent theft; 3. Stem...

Tuesday, November 26, 2019

Quantity : 1pc - Price : US $1 - 3,000 / Set

Basic information This sustaining valve is opened to prevent the pipeline and equipment from being damaged due to overpressure when the pressure in the water supply pipeline exceeds the set pressure of pressure relief. The valve closes automatically when pressure drops to the set value...

Tuesday, November 26, 2019

Quantity : 1pc - Price : US $1 - 3,000 / Set

The 30 inch is mainly used for a small number of performance valves to regulate flow, for filtering, and for butterfly and gate valves to be used as switches. ZECO 30 inch flanged double offset butterfly valve chamber is further improved on the basis of single eccentric butterfly valves...

Saturday, November 09, 2019

Quantity : 1set - Price : USD2,500

Mesh Belt Dryer/Conveyor Mesh Belt Dryer Usage: 1.Mesh belt dryer is a kind of drying equipment for batch, continuous production; it is mainly for drying of plate, strip and granular materials with better ventilation. 2.The dryer is composed of standard sections; to save place, the...

Saturday, November 09, 2019

Quantity : 1set - Price : USD2,500

Tunnel Dryer Usage: 1.Tunnel dryer is a kind of drying equipment for batch, continuous production; it is mainly for drying of plate, strip and granular materials with better ventilation. 2.The dryer is composed of standard sections; to save place, the dryer can be made in multi layers...

Saturday, November 09, 2019

Quantity : 1set - Price : USD2,500

Usage: The fluorite briquetting machine is mainly applied in power plant, chemical industry, energy, heating and other professions, which be widely used to press gypsum powder, coal powder, mineral powder and waste residue. By pressing, the finished briquettes gain features of energy...

Saturday, November 09, 2019

Quantity : 1set - Price : USD2,500

The Features: 1)Widely used. 2)Strong adaptability of materials and it can dry a large varity of materials. 3)Simple and reliable operation. Work Principle: The raw materials plate which is arranged reasonably with changeable angles in order, throws moisture materials into the rotary cylinder...

Saturday, November 09, 2019

Quantity : 1set - Price : USD2,500

Sludge dryer/Sludge drying Features: 1.High efficiency and less energy consumption. 2.The efficiency of self heat preservation is higher than 80% ,for single cylinder type ,it is 35%. 3.The fuel can be coal,oil and gas. 4.The water content of the product is less than 0.5% after drying...

Saturday, November 09, 2019

Quantity : 1set - Price : USD2,500

Structure and Working Principle: Coal slurry dryer consists of heat source, break up device, belt conveyors, feeders, rotary drum, a belt feeder, induced draft fan, discharger and power cabinet composition. Its working principle as below. Because the coal slurry with sticky, when...

Saturday, November 09, 2019

Quantity : 500 sets - Price : USD2,500

Charcoal Pelletiser Price in China Working Principle: This series of charcoal pelletiser price in china provide power to the two rollers depending on the reducer. The power through belt wheel, reducer, latter coupling and finally get to the driving shaft. The driving shaft and driven...

Saturday, November 09, 2019

Quantity : 500 sets - Price : USD2500

Professional China Charcoal Pelletiser Working Principle: This series of professional china charcoal pelletiser provide power to the two rollers depending on the reducer. The power through belt wheel, reducer, latter coupling and finally get to the driving shaft. The driving shaft...

Saturday, November 09, 2019

Quantity : 500 sets - Price : USD2500

China Famous Coal Briquette Machine Application Material: 1: Coal/coke/charcoal powder. 2: Metal powder: Iron powder, magnesium oxide powder, copper powder, chromium ore, lead, zinc scrap, bauxite, nonferrous metal powder, silicon manganese alloy powder etc. 3: Mineral powder: aluminum powder...

Friday, November 08, 2019

Quantity : 1set - Price : USD2,500

Belt Dryer Description: Belt dryer is a highly efficient drying system that can be used in different industry segments and production lines. The products include coal briquettes, charcoal briquettes, biomass pellets, wood chips and other lump or solid materials. Drying temperature...

Wednesday, November 06, 2019

Quantity : 10000pcs - Price : 0.1-100usd

ISUTAMI SW standard linear bearings, also known as SW standard linear ball bearings or SW standard linear bushing bearings. SW is the imperial series, mainly used in the markets of the UK and other British Commonwealth of Nations. The bushing and steel ball of SW standard linear bearing...

Wednesday, November 06, 2019

Quantity : 500square - Price : 25usd

Aluminum composite panel refers to a new type of decorative materials which has a series of excellent performance. It has been widely applied in curtain wall, indoor and outdoor decoration and other fields since it's created opening a new world for contemporary architectural decoration...

Tuesday, November 05, 2019

Quantity : 20 - Price : 20,000 USD - 800,000

Based on much experiences on providing quality, cost-effective and long lasting roll forming systems Cutting Principle for the selection of the Slitter for Copper Belt Precision copper slitting machine is mainly used for cutting edge and slitting of copper belt. It mainly consists of four parts...

Friday, November 01, 2019

Quantity : 200 units - Price : 7000-28000 USD

Paver shot blasting machine is mainly used for surface roughening treatment of marbles, granites, concrete products, and natural stone. It includes stone shot blasting machine and marble shot blasting machine. It provides twin advantage foremost subject field end provides outstanding...

Friday, November 01, 2019

Quantity : 200 units - Price : 7000-28000 USD

Floor shot blaster is a kind of shot blasting machine for concrete floors, steel plates. The floor shot blaster can clean up the floatation and impurities on the surface of the concrete at one time. It can also roughen the surface of the concrete road to make it uniform and rough...

Tuesday, October 29, 2019

Quantity : 200 units - Price : 7000-28000 USD

Hanger type shot blasting machine is the most flexible and versatile shot blasting machine. It comes in two options the single hook I type shot blasting machine and two hooks Y type shot blasting machine. So it can be also called hook shot blasting machine or hook type shot blasting machine...

Tuesday, October 29, 2019

Quantity : 200 units - Price : 7000-28000 USD

We have floor shot blaster for sale! Floor shot blaster is a kind of floor blasting equipment for concrete floors, steel plates. The floor shot blaster can clean up the floatation and impurities on the surface of the concrete at one time. It can also roughen the surface of the concrete...

Tuesday, October 29, 2019

The JMZ-T series rubber sandwich mounts is the new designed model, which is designed especially for the military use. Comparing with the wire rope isolators, this model is small and tinny, which has no worrying about the space limits. The max static load of the JMZ-T Series anti vibration...

Tuesday, October 29, 2019

Quantity : 25kg - Price : FOB Qingdao 2.4-2.9$

Preventing re-deposition of dirt effect Adding sodium carboxymethyl cellulose in detergent has the function of preventing the re-deposition of dirt. The working principle is that negatively charged dirt granule and charged sodium carboxymethyl cellulose molecular absorbing on fabrics...

Tuesday, October 29, 2019

Price : 30-210 USD

Hard Gold PCB, immersion gold pcb, is to immerse the board in the plating tank and apply current to form a nickel-gold coating on the copper foil surface of the board. The electro-nickel gold is characterized by high hardness, wear resistance and oxidation resistance. Widely used in applications...

Tuesday, October 29, 2019

Price : 30-210 USD

Custom enzhen, a TRUE PCB MANUFACTURER. Because of the advantages (for example, cost, space, and weight savings) that flexible and Rigid-Flex-circuit boards have for some projects, they are used ever more frequently. PCBSKY can produce your flexible circuit boards with the highest quality...

Saturday, October 26, 2019

Quantity : 1pc - Price : US $1 - 3,000 / Set

Basic information of Wafer Concentric Butterfly Valve with Post Indicator This valve can be used to open or close the medium in the fluid pipe and is one of the accessories of the automatic sprinkler system in fire engineering. Features of Wafer Concentric post indicator butterfly valve 1...