Lambda 20/Lambda 40 Installation and Maintenance Guide - VTP UP

Technical DataLamp changeAutomatically at 326 nm(selectable over the whole wavelengthrange, see Super User FactoryConfiguration)Scan speeds 7.5, 15, 30 , 60, 120, 240, 480, 960,1920 and 2880 nm/minOrdinatePhotometric range Transmission 0% to 100%Absorbance –6.000 to 6.000 (display range)1 to 9999 (concentration units)Photometric accuracy Absorbance ±0.003(measured at Absorbance = 1 at 440 nm, 546.1 nm and635 nm with NIST 930 filters)Absorbance ±0.015(measured at Absorbance = 1, at 257 nm and 350 nmwith potassium dichromate solution * )Stray radiation Transmission < 0.02%(at 220 nm, 340 nm and 370 nm)Absorbance > 2(measured at 200 nm with potassium chloride † solutionagainst distilled water)Baseline linearity 2 nm slit: Absorbance ±0.0005(corrected: 200 nm to 100 nm, scan speed 240 nm/min,smooth 2)* β(K 2 Cr 2 O 7 ) = 60.06 µg/mL ±0.5% in sulfuric acid c(H 2 SO 4 ) = 0.005 mol/L† β(KC1)= 12 mg/mL ±0.5%89