... absorption spectrophotometer ) and AFS( atomic fluorescence spectrophotometer) Main Technical Specifications: 1. Start Voltage: ≤350V, low voltage, could be used with kinds ... , usually about 5 to 15min4. Stability: ≤+1% to -1% baseline drift of copper lamp within 30min <1%, baseline drift of other lamps within 5min ... ,Li, Mg,Na,Ni, Ti, As, Se,V, Au, Be, P, ReB,Ce,Dy,Gd,La, Nb, Nd, Sm, Bi,Co ...