Food Science Instruments


Produce Quality Meter

The F-750 Produce Quality Meter uses near-infrared (NIR) spectroscopy, as developed at Central Queensland University, to estimate quality metrics such as dry matter, Total Soluble Solids (TSS or brix), titratable acidity, and color. Working like a high-powered flashlight, the F-750 sends particles of light into a commodity, then measures the NIR light interactance with molecular components inside of the commodity to quantify user-selected traits.

The F-750 has a wide range of applications, from determining optimal harvest timing by assessing fruit maturity, to providing an objective analysis of produce quality of fruit in packing houses and upon import.

The F-750 is a handheld, fully integrated system, allowing users to operate it out in the orchard or inside the QA lab. Its simple, intuitive user interface makes it easy for anyone to use, while its model building software makes it customizable and versatile.


Patented in Australia, China, EPO, New Zealand, USA, and South Africa. 

Click here for a downloadable compilation of published research.


  • Measures traits including, but not limited to:
    • Total Soluble Solids (TSS or brix)
    • Dry Matter
    • Titratable Acidity
    • Internal Color
    • External Color
  • Fast and consistent — scans take
    4-6 seconds per sample
  • Non-destructive measurements
  • Built-in GPS for easy crop mapping
  • Transflective display for outdoor viewing
  • Rechargeable/replaceable batteries that last all day
  • Ability to create unlimited customizable models for specific varieties or locations

Please see our F-750 Quick Start Guide
for steps on how to get started building models.


Spectrometer: Carl Zeiss MMS-1 Spectrometer

Range: 310-1100 nm

Spectral Sample Size: 3 nm

Spectral Resolution: 8-13 nm

Light Source: Xenon Tungsten Lamp

Lens: Fused silica, coated to enhance NIR

Shutter: White painted reference standard

Display: Sunlight visible transflective LCD screen

PC Interface: Connectivity: USB & WiFi

Data Recorded with Each: Raw data, reflectance, absorbance, first derivative

Measurement: Absorbance, second derviative absorbance

Power Source: Removable 3100 milliamp hour lithium-ion battery

Operating Temperature: 0- 50° C

Battery Life: 1600+ measurements

Data Storage: Removable 64 GB SD card

Body: Heavy-duty powder-coated aluminum body

Dimensions: 7.1" x 4.75"W, 1.75" thick

Weight: 1.05 kg


Starter Models for Firmware 1.2.0 and below.

The F-750 currently has starter models for apples, grapes, mandarins, mango, pear, and persimmon.

*different data set was used to build model


Non-destructive measurements of total soluble solids and dry matter content in apple.

View Use Case

Download Starter Models


Non-destructive measurements of dry matter in avocado.

View Use Case

Download Starter Models


Non-destructive measurements of total soluble solids in mandarins.

View Use Case

Sultana Fresh Table Grape

Non-destructive measurements of total soluble solids in sultana fresh table grape.

View Use Case


Non-destructive measurements of internal quality indicators for kiwi.

No Use Case

Download Starter Models


Non-destructive measurements of dry matter in mangoes.

View Use Case

Download Starter Models


Non-destructive measurements of total soluble solids in pear.

View Use Case


Non-destructive measurements of total soluble solids in chocolate persimmon.

View Use Case

Dried Sultana

Non-destructive measurements of moisture content in dried sultanas.

View Use Case


Non-destructive measurements of dry matter in cherries.

View Use Case

Training Materials

The training materials below are to help one get started in their use of the F-750 Produce Quality Meter and the Model Builder software. Following the standard model building process, the SOP for reference value collection using the example of mangos should be reviewed first, followed by the instructional video for how to import and use the Model Builder software and finally the videos addressing interpretation of the results provided in Model Builder.

If you are using the device for the first time, the Getting Started guide is a great way to learn the basics of operation. If you are attempting to customize a starter model for use with your own specimen, it is recommended that you review our Tailoring Models guide.

The Mango Data Collection Standard Operating Procedure should be used as a guide for appropriate training set creation and corresponding reference value collection during the model building process.

The F-750 Demo Reference Values and Demo Training Set files can be used in conjunction with the Interactive Model Builder Demo video. Watch the video and then download the reference values and training set files to try out the software for yourself.

For a brief introduction to the statistical results shown in the model performance analysis tab in model builder, review the videos below. Start with the Introduction to Model Analysis and then reference the following clips on each of the statistical graphs shown in Model Builder.

Gen 2 Walkthroughs

AppBuilder Walkthroughs

F-75X Walkthroughs