Watson-Marlow Bredel has revealed how its peristaltic pumps have been used by Casp Products in the production of its Dipslide bacterial contamination kits.
Casp Products introduced peristaltic pumps to dispense viscous nutrient media at 50C on to the Dipslides in a process requiring more than 5,000 individual 3.5ml high-precision doses per shift, at a rate of under a second each.
Colin Paine, managing director of Casp Products, said since introducing the 500 series unit with twin 313 pumpheads, the improved dosing accuracy has increased production yield by five to eight per cent.
Watson-Marlow Bredel said this application highlights many of the individual attributes of its range of dispensing solutions, all based on its proven peristaltic pump technology.
Hygienic processing is given as an example.
Casp Products's manufacturing takes place in a cleanroom environment and it is vital that the nutrient media is not contaminated in any way.
In a peristaltic pump, the fluid being pumped only comes into contact with the inside of the tube which is quickly sterilised or replaced.
As the roller mechanism is external to the tube, there are no shaft seals to worry about that could leak - in either direction - causing contamination of the product or the surrounding environment.
Because the tube is always occluded by at least one roller, there is no need for additional check-valves in the line, which can wear and need cleaning or replacing.
A new tube creates a new pump.
