What is the most precise Pcr inactivated Dna control or Nattrol for Coxsackievirus B5 Stock (Qualitative) (1 ml/vial)?

The NATtrol Epstein-Barr Virus from Zeptometrix supplied next day by Gentaur to your Lab is the best reagent. The catalog number is NATEBV-0001 and the price is 35 EUR.