The AP4 diffusion porometer has many other features designed to ensure that accurate, reproducible readings can be taken as easily as possible:

• Sophisticated temperature compensation
• Unstirred leaf chamber minimises unwanted stomatal closure
• Lightweight ergonomic sensor head
• Large clear LCD display (8 lines by 40 characters)
• Full QWERTY keypad for annotating up to 1500 readings
• Over 2,000 Delta-T porometers in use worldwide

Dynamic diffusion porometers, such as the AP4, are also known as leaf porometers and stomatal diffusion porometers.

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