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

ICAR-Sugarcane Breeding Institute, Veerakeralam, Coimbatore-641007, Tamil Nadu (
Click Here to See Management Committee
Instrument Details
Instrument/Facility Name: chlorophyll fluorescence meter
Make                                   : Opti-Sciences
Model                                  : OS-30p (Opti-Sciences, Hudson,USA).
Specification   :Saturation intensity: 600- 6000 μmols set from 10% to 100% Saturation light source: Array of red LEDs 660 nm. Modulated light source: Red 0.2 to 1.0 μmols. Detection method:Pulse modulated Detector and Filter:Pin photodiode with 700-750 nm band pass filter

Click to View Test duration: 0.1 seconds to 1.5 seconds. The default saturation pulse duration is set at 1.0 second; however, the software takes a rolling eight point 25 ms average to determine FO, and FM, making it idea for both algae and land plants.

  Working Principles
Click to ViewLight energy absorbed by chlorophyll molecules in a leaf undergo one of three fates as mentioned below: it can be used to drive photosynthesis (photochemistry), excess energy can be dissipated as heat or it can be re‐emitted as light—chlorophyll fluorescence. Based on the fluorescence the magnitude of stress is determined.

  User Instructions
Used to determine the Fv/Fm data which helps to screen the stress tolerant genotype.Sampling should be done at peak stress of the crop. Reading has to taken in dark adapted leaf.

  Contact Us
Contact No. 0422 - 2472621
Email Id

  chlorophyll fluorescence meter Charges
Procedure Name
National LAB/R&D

Additional Rs 100/-towards postal charges if result are to be posted
The Demand Draft should be in favour of "The Director, Sugarcane Breeding Institute, Coimbatore "
Letter, DD & Samples send to "The Director, Sugarcane Breeding Institute, Coimbatore "