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How SWL™ became 'non-floating'

Initially, SWL™ was a floating device. It had a float accessory into which the device was pushed and then floated in buffer or appropriate dialysis solution. One day a researcher loaded less amount of the sample into the sac and the device toppled! This got the development team thinking- the device remained stable and floated vertically when sample volume was less than 5 ml but below this it behaved in a 'drunken' manner - revolving giddily and eventually toppling over!

Several alternatives were tried e.g.

  • height reduction
  • base increase
  • enhancing weight of base
  • increasing diameter of base
  • accessory attachment at base etc.

but all failed! Nothing seemed to work. Then one fine day the solution dawned! All efforts at stabilizing the device had been directed at the lower end . Why not catch it from the top? Why not develop a top plate and while retaining the simple and elegant design of SWL™, solve the problem of toppling? The inventor rushed to a cobbler near his house and got a rectangular plate cut from shoe rubber. He tested the concept and it worked beautifully! Subsequently, plastic plates were developed and the SWL™ you use today is a rugged, stable device.

SWL™ thus became the world's first non-floating device, offering the largest sample processing capacity of 0.1-20 ml within the same device.