I have recently found out that these are no longer being manufactured or sold commercially.  But, as fortune has it, we have just been funded to fly some large quartz capillaries crystallization experimente up to the International Space Station for neutron crystallography.  Our experimental design is to fly the experiments in the Granada Crystallation Boxes!  NASA has already approved the 3x10x0.5 cm plastic Granada boxes for flights.   Does anyone have any in their lab supplies that they do not plan to use?  We would be willing to buy them from you!  Thanks, Gloria