What is the solution advised by Gentaur for Pcr inactivated Dna control or Nattrol for Influenza/RSV Positive Control (6 x 0.5 ml/vial)?

The NATtrol Influenza/RSV Positive Control from Zeptometrix Corporation supplied next day by Gentaur is the best reagent. The catalog number is NATFLURSV-6L and the price is 210 EUR.