Autoclaveable Flip Dispensers are used to place all three lengths of sterile PTFE encapsulated Stir StiXs into wells before the liquid is added. This 3 in one dispenser can be sterilized by autoclaving or by heating in a hot air oven. This dispenser contains 96 ordered holes in a top loading plenum that is 22 mm deep. By adding additional plenums that are 6.9 mm and 13.5 mm thick, all three lengths of PTFE encapsulated Stir StiXs can be accommodated. The holes in the plenums are just large enough to accommodate one Stir StiX.
The trick is to place the dispenser over a large and very powerful magnetic field, VP 771, which will cause the Stir StiXs to stand on end and then fall down into the holes. By using 200 to 300 Stir StiXs and quickly moving the dispenser back and forth over the magnetic field, the perpendicular Stir StiXs move over the plenum surface and fall into the holes until all holes are filled.
Once loaded the excess Stir StiXs are decanted off and an empty Deep Well Plate is turned upside down on the loaded plenum and the VP 733-2B is "flipped" over dropping the Stir StiXs into the wells. Simple as 1,2,3 and more economical then our drop dispenser VP 733-2A. The limitation with the Flip Dispenser is that the plates have to be loaded with the Stir StiXs prior to adding liquid.