What is the most common Pcr inactivated Dna control or Nattrol for CARBA-R Verification viral reference serum panel (10 x 0.06 ml/vial)?

The NATtrol Clostridium difficile Negative Control from Zeptometrix delivered next week by Genprice is the best reagent. The catalog number is NATCSO-6MC and the price is 255 EUR.