"Then Barney Gardom may have stumbled across the service you need at http://athanor.firedrake.org. It offers "home and office cleansing" as part of its "curse removal and protection" services. We assume they'll do laboratories too."
As believers in the idea that PCR only works if you use the 'special' water, cross your fingers while setting up the reaction and make sacrifices to the gods of PCR, that it's all down to the Curse of the Thermal Cycler sounds an intriguing possibility.
* okay, we lied...