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Spectrochem Instruments Pvt. Ltd. |
Product Summary |
Pumping principle |
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Pump head consists of only two parts, the cage & the cassette. The tubing is placed on the cassette between the cage and the pressure applicator. The tube is squeezed when cage advances. This way a partial vacuum is created on the suction side. Thus the solution being pumped rises into the tubing. |
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The rollers on the cage move across the tubing, pushing the fluid. The tubing behind the rollers recovers its shape, creates the vacuum, and draws fluid in behind it. |
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A "pillow" of fluid is formed between the rollers. This is specific to the ID of the tubing and the geometry of the cage. Flow rate is determined by multiplying speed by the size of the pillow. This pillow stays fairly constant except with very viscous fluids. |
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Instrumentation through innovation |
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Peristaltic pumps |
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Handling of fluids in food processing, pharmaceuticals & biotechnology need contamination free systems. Peristaltic pumps are best suited for this purpose. Also, in analytical chemistry, transfer and transport of samples and standards to various equipment need contamination free pumping systems.
Shear sensitive fluids such as curd, yogurt, blood & blood plasma products cannot be pumped employing the regular centrifugal pumps. The chopping action of the centrifugal pump is not recommended for such applications. Secondly, the pump head is a major source of contamination in these pumps.
Peristaltic pumps can pump fluids as viscous as 10,000 centi pose units. In peristaltic pumps only the pump tube comes in contact with the medium to be pumped. By selecting the right tube material, different pumping requirements can be met. |
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Four ultra high precision dispensing peristaltic pump tower for our bioreactor control system |
