F-751 Avocado Quality Meter

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Avocado Dry Matter Testing

Gauges Avocado Quality by Non-Destructively Measuring Dry Matter! Enables avocado growers and packers to accurately and non-destructively estimate the dry matter of Hass avocados while still on the tree.

Dry matter is the primary metric avocado growers and packers rely on to judge fruit maturity and traditionally, the process to assess dry matter is both time and labor-intensive. Using either microwave ovens or food dehydrators, measuring dry matter requires destructively taking avocado samples, weighing them, drying them and weighing them again. Then, repeating this process over the course of the growing season, destroying large numbers of valuable avocados in the process.

 The Avocado Quality Meter completely changes this process. Using near-infrared light, non-destructively and within a matter of seconds, the avocado producer can accurately assess avocado dry matter - saving time, saving fruit and often, increasing the accuracy of their dry matter assessments.


NEW: With Felix’s latest firmware upgrade, the Avocado Quality Meter can now effectively measure fruit to an accuracy of within *1.15 dry matter (DM) units on a single fruit and **0.83 DM units on fruit in lots of 5.

Data collected using the F-751 Avocado Quality Meter can be seamlessly transferred to a computer using a Wi-Fi connection for easy analysis and sharing. It comes with a pre-programmed starter model for Hass avocado and the more you use your Avocado Quality Meter with your fruits, the more accurate your harvest info will become.

The F-751 comes equipped to work with Fruit Maps, a FREE Interactive Harvest Map. Monitor your orchards in real time from anywhere in the world!


Avocado Quality Meter Useful for:

  • Optimization of crop management and harvest-timing for fresh produce growers
  • Postharvest quality management in cold storage and ripening rooms
  • Import quality assessments
  • Retail outlet inspection


  • Light-weight, portable, and field-ready
  • Fast and consistent—scans take 4-6 seconds per sample
  • Non-destructive measurements
  • GPS for easy crop mapping
  • Transflective display for outdoor viewing
  • Rechargeable/replaceable batteries that last all day
  • Wi-Fi capabilities
  • Created specifically for Avocados!


Spectrometer: Hamamatsu C11708MA
Range: 640-1050 nm
Spectral Sample Size: 2.3 nm
Spectral Resolution: 20 nm (FWHM) maximum
Light Source: Halogen Tungsten Lamp with gold reflector
Lens: Fused silica coated to enhance NIR
Shutter: White painted reference standard
Display: Sunlight visible transflective LCD screen with backlight
PC Interface: Wi-Fi
Data Recorded: Raw data, reflectance, absorbance, first derivative second derivative, GPS coordinates, Date, Time
Measurement: Dry Matter
Power Source: Removable 3400 milliamp hour lithium-ion batteries
Battery Life: 500+ measurements
Body: Heavy-duty powder coated aluminum body
Dimensions: 7.1" x 4.75"W, 1.75" thick
Weight: 1.05 kg


*Where DM units are % dry matter. Calculated at 23% dry matter, 4 scans per avocado.
** Also calculated at 23% dry matter, 4 scans per avocado and average DM taken on lots of 5 avocados.