Digital Colorimeter Precise Color Difference TesterProduct Description :Digital Photo Electric Colorimeters are elegantly designed and easy to operate instruments for colorimetric analysis of a solution of any concentration. Output is available on the digital display in terms of Optical Density (O.D) or absorbence. This instrument includes optical glass filters covering wavelength from 380mm to 720 mm which are fitted in built-in wheel/ rotating disc. An automatic mechanical shutter is provided to avoid fatigue of the photo diode. When switched 'ON' LED glows and light passes through the solution to the photo diode and the measurement is taken. A mechanical shutter moves away from light path every time the cuvette is inserted. This prolongs the life of photo diode.Technical SpecificationsMeasurements: Manual - OD only Auto Zero-OD & %T Simutaneously Auto Zero with FND-OD, Microprocessor-OD, %T & concentration with storage of 3 standard valuesAccuracy : +/- 0.02 O.DReproductibility : +/- 0.01 O.DStability: : +/- 0.01 O.D. per hourLight Source :Solid-state light sourceAmplifier: : I.C based / solid stateDetector : Silicon photodiodeWarm up time : 5 minutesDisplay Digital : 2 1/2 Digital LED DisplaySample system : 12mm diameter matched glass tubeSample Size : 1.0 mLPower Supply : 230V +/- 10% HzWeight : 2.5 KgDimensions : L (33.2cm) x W (29.7cm) x H (16.5cm)Accessories SuppliedTest Tube (Matched) : 5 No.sDust CoverInstruction Manual Wavelength RangeViolet 400mm ---------- 380 to 420mmViolet Blue 420 ------------ 410 to 460Blue 480 -------------- 460 to 500Bluish Green 500 ------------- 480 to 520Green 520 -------------- 500 to 540Greenish Yellow 540 -------------- 520 to 560Orange 620 -------------- 600 to 640Red 680 --------------- 640 to 700