ویال تست جهت اندازه گیری سرب با روش PAR Lead TNTplus Vial Test (0.1-2.0 mg/L Pb) For determination of Lead by the PAR Method with a working range of 0.1 - 2.0 mg/L Pb. Hach method 10216 has greatly simplified spectrophotometer based lead testing by eliminating the use of separatory glassware and organic solvents.