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

Technical DataOrdinatePhotometric 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 and630 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 solution †against distilled water)Baseline linearity 1 nm slit: Absorbance ±0.0012 nm slit: Absorbance ±0.0005(corrected: 200 nm to 100 nm, scan speed 240 nm/min,smooth 2)Baseline noise1 nm slit:Absorbance < 0.00008 RMS,Absorbance < 0.0003 peak-to-peak3 min at absorbance = 0, wavelength 500 nm andresponse 2 s)* 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%85