AM400 Portable Leaf Area Meter

Discover the new AM400 Leaf Area Meter

The new AM400 is the ultimate tool for fast, accurate, and non-destructive leaf area measurements. With advanced technology, lightweight design, and user-friendly operation, the AM400 is perfect for researchers and agronomists.

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  • AM400 wide leaf measuring with board
  • AM400 with scan board and case
  • AM400 on scan board with white background
  • AM400 on scan board with black background
  • AM400 scanning long leaf on connected scan boards with white backgrounds
  • AM400 scanning long leaf on connected scan boards with black backgrounds

    • Accurate & non-destructive leaf area measurement for scientific research

    The AM400 Portable Leaf Area Meter is the latest device in the area meter series (AM) following the success of the widely used AM300 and AM350, which featured in over 140 scientific publications (and counting).

    With the innovative selectable Red, Blue and Green LEDs providing enhanced scanning contrast, unlimited scan length and increased width, the AM400 is the ideal tool for non-destructive measurement of leaf area, length, width, and shape. It is an essential tool for plant physiology, agronomy, and ecological research.

    Ideal for a wide range of applications

    • Plant Physiology Research – Monitor leaf growth and morphology over time.
    • Agricultural Studies – Evaluate crop performance and leaf area index (LAI).
    • Leaf Damage Analysis – Compare healthy and diseased leaf areas with high-contrast imaging.

    Why choose the AM400?

    • Fast & Accurate – Optical scanning delivers reliable results within seconds.
    • Non-destructive – Preserves plant integrity for ongoing research.
    • Portable & Easy to Use – Designed for field and laboratory applications.
    • Advanced Imaging – RGB LEDs and contrast adjustment for superior scan quality.
    • Unlimited scan length – Seamless connection of multiple boards to scan long leaves

    Key Features & Benefits

    • Non-destructive Leaf Area Measurement
      • Accurately measures leaf area without damaging the specimen.
      • Ideal for longitudinal studies in plant physiology, crop science, and environmental research.
    • RGB LED Technology for High Image Contrast
      • Advanced selectable RGB LED illumination ensures high image contrast, enhancing measurement accuracy across various leaf colours and textures.
      • Supports black-on-white and white-on-black scanning modes for precisely detecting healthy and diseased areas.
    • Handheld & Portable for Field and Lab Use
      • Lightweight handheld scanner with an ergonomic design for seamless operation.
      • Rechargeable battery supports 300+ scans per charge, ensuring extended field use.
    • High-Resolution Optical Scanning
      • Contact Image Sensor (CIS) technology provides 100 dpi resolution for capturing intricate leaf details.
      • Adjustable contrast control enhances measurement precision.
      • Dual Scan Modes: Normal (black on white) and inverse (white on black) modes accommodate different leaf types and conditions.
    • Flexible Data Storage & Transfer
      • SD card storage for easy scan retrieval and review.
      • USB Type-C connectivity allows direct data transfer to a PC in CSV and BMP formats.
    • Comprehensive Measurement Parameters
      • Calculates area, length, width, perimeter, ratio factor, and shape factor.
      • Supports measurements in metric and imperial units.

    Get precise data in seconds

    Contact us today to explore how the AM400 Portable Leaf Area Meter can unlock new possibilities for your plant research.

    View documentation

    Resources

    • Accuracy / Repeatability:
      • Linear measurements: ±1% of reading
      • Area measurements: ±2% of reading
      • Perimeter measurements: ±5% of reading
    • Scanning Technology:
      • Handheld scanner with internal illumination and CIS array
      • 100 dpi resolution with continuously variable contrast control
    • Measurement Parameters:
      • Leaf area, length, width, perimeter, shape factor, and ratio factor
    • Maximum Scan Width: 183 mm (7.2”)
    • Scan board:
      • 25 cm modular board
      • Graduated reversible background (white and black )
      • Clear overlay to flatten leaf.
    • Display: 128 x 240 pixel LCD graphics display
    • Storage & Connectivity:
      • SD card for data storage
      • USB Type-C data port for file transfer
    • Power & Battery:
      • Rechargeable lithium-ion battery
      • Typically 300+ scans per charge
      • Charging time: Less than 3 hours via USB Type-C adapter (100-240 V, 50/60 Hz, 5 V DC at 2.5 A output)
    • Operating Temperature Range:
      • Measurement: -20 °C to 55 °C
      • Charging: 10 °C to 40 °C

    Technical documents

    AM400 Operating Manual

    Product brochure

    AM400 Brochure

    Orders / enquiries

    Please see the Contact page or complete the enquiry form below.

    Alternatively you can contact our international Distribution & Support Centres.