* Measurement method: the end of law, rate method, two-point method, dual-wavelength method, multi-standard method, the absorban Thank you for visiting our website!Technical parameters * Source: Long life halogen 6V/10W* Filter wavelength range: 300nm ~ 800nm, the wavelength continuously adjustable* Test range: 0 ~ 3.0Abs * Drift: ≤ 0.002Abs/20min* Temperature: room temperature, 25 °C, 30 °C, 37 ...