Leaflab 1 is a basic system for studies of photosynthesis/respiration

by oxygen evolution/uptake in samples in the gas-phase.  Samples are

typically leaf discs, excised needles, algae, mosses, lichens etc. are

sealed into the leaf chamber of the LD1/2 unit.  Changes of exygen

partial p;ressure are determined by the integral oxygen electrode

mounted in the base of the unit.

*LD1/2 electrode unit suitable for leaf discs up to 10 sq cm cut from

  whole leaves,algae or moss etc.

• *Upper optical port allows illumination from an LS2 high intensity white
•   light source.
• *LS2 intensity adjustable by insertion of A5 set of neutral density
•   filters (included).
• *Oxygen electrode control & signal acquisition via CB1-D3 control box 
•   with gain & back-off controls.
• *Oxygen signal output from CB1-D3 to chart recorder via 0 - 5V output.

The system provides automated control of a red (660nm) LED light

source array. 32 bit Windows®software functions provide automated

measurement of the rate of oxygen evolution/uptake at a range of

user-defined light intensities in order to determine apparent quantum

yield.

*LD2/3 electrode unit suitable for leaf discs up to 10cm2 cut from

  whole leaves, algae or moss etc.

*Double water jacket provides enhanced temperature control of sample

  & electrode disc.

*Illuminated by LH36/2R red LED array which locates on the large upper

  optical port.

*Light source calibration acheived using QSRED large area quantum sensor.

*Electrode control & direct signal acquisition to a PC via the Oxylab 

  oxygen electrode control unit.