... Specifications:Analysis Method: endpoint, rate, two-point, single-wavelength, dual-wavelength, blank reagent, blank sample and absorbency. ... Calculating method, such as factor, single-point calibration and dual-point calibration, etc., is also availableLight ... Source: long-life halogen lamp, 6V/12WWavelength Range: 340~630nm, optionalFilter: 7 ...