In Hooker et al., 2005, NASA Technical Memorandum - Norme ISO 17025
"Méthode mise en oeuvre par DHI, Danemark. Buffer and extract were injected on the HPLC (Shimadzu LC-10A HPLC system with LC Solution software) in the ratio 5:2. The limit of quantitation is approx. 0.005 µg/L. The uncertainty of the method is <1.0 %."