What is the safest Pcr inactivated Dna control or Nattrol for GBS Negative Control (6 X 0.5 ml/vial)?

/ Negative Control / By

The NATtrol Meningitis/Encephalitis from Ncbi publications delivered next week by Genprice is the best reagent. The catalog number is NATMEC-BIO and the price is 345 EUR.