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Laboratory Diaphragm Vacuum Pumps are resistant to high and low temperatures and acid gases.pumps are single-head, dry-running devices used in a wide range of laboratory applications. They transfer, compress and pump down without contamination..https://www.gaiascience.com.sg/productcategories/laboratory-pump-laboratory-essentials
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In this new age of scientific instrumentation and analysers, the need for fluidics management at an increasingly accurate rate has eclipsed the standardized pumping methods used in the past.
High-capacity diaphragm pumping stations in the analytical laboratory are needed for the efficient operation of many instruments and analyser, as they depend more and more on mechanical methods for fluid and gas movements throughout the systems.
Different pumping methods exist, and each presents its own set of problems encountered by laboratory personnel. Finding a good match for the needs of your laboratory does not have to seem so daunting, as there are so many systems from which to choose.
Finding the pumping system for the analysers and other instrumentation of the laboratory can be just a matter of how you operate fluidics or liquid handling, or what type of analysis is predominant in the laboratory.
One of the best methods for fluid management is the diaphragm pump. The diaphragm pump is a deceptively simple design. A diaphragm, or membrane, is positioned in a pumping chamber, usually form-fitted to achieve efficient gas or fluid movement.
The membrane can be made of a thermoplastic, rubber, such as latex, or a PTFE impregnated plastic. The flexibility is not as important as the materials ability to withstand against high temperatures, caustic or acidic chemicals, or acidic vapors.
The diaphragm must be able to run indefinitely without concern of overheating or general wear over short periods. The valve system must also follow certain guidelines for safety and flow control.
The valves must be made of materials that can also withstand possible hazardous substances, and not lose their functionality in the exposure to excessive heat or cold. The valve timing must be efficient and cause a steady flow of air, fluid, or gas without interruption or surges.
Some diaphragm pumps are used for the negative pressure, as in vacuum systems used in chemistry or haematology analysers. Reservoirs are used to maintain a constant vacuum after the pump has reached the required pressure, so the pump is only activated at times when the negative pressure reaches undesirable levels.
The diaphragm pump must withstand on-and-off operation at different times, and the motor must be a quick-response electric with auto-shutdown if overheating is reached. Diaphragm pumps come in two styles: Single head and double head. The single head can have different capacities, ranging up to 100 InHg, or 7.0 Bars.
This is excellent for the operation of several instruments that require positive pressure in their reservoirs. As far as vacuum, a capability of 1000 Mbars should be available with an excellent diaphragm pumping system.
A dual-head diaphragm pump can provide even more pressure and ultimate vacuum to handle just about any need. These larger, high-powered units have two diaphragms functioning in tandem, so that the flow rate through tubes is constant and controlled.
With gauges and relief valves, there can be no doubt about the performance of these versatile and precision pumping systems. Diaphragm pumps are the systems of choice for many research and medical laboratories around the world.
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