Model: Lambda 19
Perkin Elmer, U.S.A.


Double Beam, Double Monochromator, Ratio Recording
Lamp: Deuterium (UV), Tungsten-Halogen (VIS/NIR)
Detectors: Photomultiplier tube for UV/Vis Lead-Sulphide cell (PbS) for NIR
Wavelength Range: 180-3200nm for Absorbance/Transmission and 180-2500nm for Reflectance
Scan Speed: 0.3 to 1200 nm/min
Wavelength Accuracy: ± 0.15 nm for UV/VIS & ± 0.6 nm for NIR
Base line flatness: ± 0.001 A° , 4 nm slit
Ordinate Mode: Scan, Time Drive, Wavelength Programming, Concentration
Photometric Accuracy: ± 0.003 A° or ± 0.08 %T


UV-VIS-NIR Spectrometer Perkin Elmer Lambda 19 Range: 180-3200 nm: Diffuse reflectance attachment; Standards for wavelength and absorption calibration validation traceable to NIST All types of measurements/studies in the region including Absorbance, Transmission and Reflectance spectra; Quantitative analysis.


Chemical – To find out unknown concentration. To find out wavelength maxima

Physics – To find out band gap of the semiconductor crystal and its optical properties.


Clinical and Pharmaceutical – To find out optical density

Environment Science – Effluent water analysis and its concentration

Dyes – To find out colour concentration


Material Science - Find out materials optical properties and its concentration.



Used for analysis of various compounds to find out the absorbance value & wavelength maxima in UV-VIS-NIR region  
Very useful instrument for qualitative analysis.
The accessory "Integrating sphere" with spectrometer helps to analyze samples in reflectance mode
The accessory helps to analyze samples like cloth, leather, films, various biological samples
Helps in research & development of dyes products chemicals and other colored products
The instrument is also useful to study kinetic behavior of chemical reaction with respect to time