Indian Council of Agricultural Research
(Agricultural Knowledge Management Information System)

ICAR-Directorate of Cashew Research, Darbe, P.O. Puttur, Dakshina Kannada-574202 Karnataka (
Click Here to See Management Committee
Instrument Details
Instrument/Facility Name: UV-Visible Spectrophotometer – Double beam
Make                                   : Shimadzu
Model                                  : Shimadzu UV-1900
Specification   :

Click to View-Wide wavelength range of 190 to 1100 nm -High resolution 1 nm or better spectral bandwidth over entire wavelength range -Wavelength setting and display in steps of 0.1nm -Wavelength accuracy of ± 0.1nm for D2 Peak 656.1 nm, ± 0.3 nm for entire range spectral line -Wavelength reproducibility of + 0.1nm -Variable wavelength scanning speed of 25,000 nm/min to 2 nm/min or higher -Ultra low stray light of <0.5%T at 198 nm with KCL or better -Wide Photometric range of -4 to +4 Abs and 0 to 400 %T -High Photometric Accuracy of + 0.002 Abs at 0.5 Abs or better-High Photometric Repeatability of <+0.0002 Abs at 0.5 Abs or better -Very low baseline drift of 0.0003 Abs/hour or better High baseline flatness of +0.0006 Abs over entire wavelength or better -Ultra low Photometric noise of <0.00005 Abs or better -Dual source – high intensity Tungsten-Halogen and Deuterium lamp with automatic changeover -High sensitivity matched pair Silicon Photodiode detector

  Working Principles
Click to ViewDouble beam spectrophotometer instrument is used to determine the amount of light of a specific wavelength absorbed by an analyte in a sample. A beam of light from a visible and/or UV light source is separated into its component wavelengths by a prism or diffraction grating. Each monochromatic (single wavelength) beam in turn is split into two equal intensity beams by a half-mirrored device.

  User Instructions
For measurement of elements such as P, Mo, B in soil, plant, water, manure, fertilisers etc. It is also used for qualitative and quantitative analysis of DNA, RNA and proteins. It has third dimension spectrum utility for sample analysis. Also possess various operational modes as standard – Photometric; Spectrum; Quantitation; Kinetics, Time Scan, DNA and Protein Quantitation in standalone and PC mode. All samples should be homogenous. Samples should not be toxic or hazardous. Samples are to be filtered properly. Samples can be prepared as per standard protocol.

  Contact Us
Contact No. 08251-231530
Email Id

  UV-Visible Spectrophotometer – Double beam Charges
Procedure Name
National LAB/R&D
Per sample/parameter
Per sample/parameter - processed samples

Additional Rs 100/-towards postal charges if result are to be posted
The Demand Draft should be in favour of "Director, ICAR Unit- DCR, Puttur"
Letter, DD & Samples send to "Director, ICAR-Directorate of Cashew Research, Darbe (PO), Puttur 574202, Dashina Kannada, Karnataka"