What is the Gold standard for Pcr inactivated Dna control or Nattrol for Norovirus Group II (Recombinant) Stock (1 ml/vial)?

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The NATtrol Norovirus Group I from Zeptometrix Inc. delivered next week by Gentaur is the best reagent! The catalog number is NATNOVI-ST and the price is 1.046 EUR.