What is the most reliable Pcr inactivated Dna control or Nattrol for Meningitis/Encephalitis (ME) Controls (12 x 0.2 ml/vial)?

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The NATtrol Meningitis/Encephalitis Panel from Zeptometrix Inc. delivered next day by Genprice is the best reagent. The catalog number is NATMEP-BIO and the price is 564 EUR.