WALZ Photosynthesis Instruments
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  • Laboratory
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  • Water
Metrics
  • Photosynthetic Light Reactions
  • Gas Exchange
  • Light Measurement
Application
  • Corals
  • Algae
  • Surfaces
  • Leaves, Fruits & Branches
  • Lichen & Mosses
  • Suspensions (High Conc.)
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DUAL-DAO/-EAO

Accessory

Module for assessment of proton gradients in intact cyanobacteria

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  • Specifications
WALZ DUAL-DAO detector and DUAL-EAO emitter module in 90 degree ankle for measuring Acridine Orange/Yellow fluorescence quenching by photosynthetic delta pH
Bird view of DUAL-DAO detector and DUAL-EAO emitter module for measuring Acridine Orange/Yellow fluorescence quenching by photosynthetic delta pH
Excitation and emission spectra of Acridine Yellow and Acridine Orange with 455 nm measuring light and 500–580 nm detection window
Wiring schematic of WALZ DUAL-DAO detector and DUAL-EAO emitter module with connector and signal flow diagram

The module is designed to measure the fluorescence of the dyes Acridine Orange or Acridine Yellow. The fluorescence of these dyes is quenched by the formation of delta pH by photosynthesis.

Related Products:

DUAL-PAM-100 measuring system for simultaneous P700 and chlorophyll fluorescence analysis
Product
Photosynthetic Light Reactions
DUAL-PAM-100
P700 & Chlorophyll Fluorescence Measuring System
Water
Laboratory
AO measuring light
455 nm
Dimensions
10.5 cm x 5.5 cm x 7 cm (L x W x H)
Weight
400 g (incl. cables, 1 m long)
Signal detection
PIN photodiode with special pulse preamplifier. Detection window, 500 nm – 580 nm
Chlorophyll fluorescence measuring light
Modulated excitation at 620 nm
Actinic light
Blue (460 nm) LED lamp for continuous actinic illumination, maximum PAR 700 μmol m-2 s-1. Chip-on-board LED array identical to that of DUAL-E measuring head
Dimensions
15 cm x 5.5 cm x 7 cm (L x W x H)
Weight
500 g (incl. cable, 1 m long)

Usage

Water
Laboratory
Photosynthetic Light Reactions
Suspensions (High Conc.)

Innovation and tradition: These are the driving forces which have made of Heinz Walz GmbH one of the world’s top producers of highly sophisticated photosynthesis measuring systems.

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