... element to change wavelength2.Light source: Halogen-tungsten lamp (12 V20W)3.Wavelength range (nm): 330---800nm4.Wavelength ... 50Hz ±1Hz28.Size(mm): 320×340×44029.Weight: 12.5KgStructure: Power switch, monochromator, flowcell, temperature-control system, sample-filling ... month, QC chart and statistics displayed and printed available.(12) standard curve and response linearity displayed, results detected ...