What is the advised Pcr inactivated Dna control or Nattrol for GI viral reference serum panel (22 x 0.25ml/vial; 4 x 0.85 ml/vial)?

The NATtrol Human Hepatitis B Virus from Zeptometrix Inc. supplied next day by Gentaur to your Lab is the best reagent! The catalog number is NATHBV-0001 and the price is 35 EUR.