AP4 Leaf Porometer - animated video

The AP4 Leaf Porometer makes fast, accurate and convenient measurements of stomatal conductance in leaves.

Our brief animated explainer video highlights the AP4's unique features and shows how it works.

Click here to visit the AP4 page and watch video.

AP4 Key features:

• Direct readout of stomatal conductance or stomatal resistance
  
  
• Simple absolute calibration in the field
  
  
• Minimises leaf stress during measurement
  
  
• Ideal for phenotyping based research
  
  
• Award winning user interface
  
  
• 5 year warranty
  
  

Download the AP4 Data Sheet

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