Portable Fruit Hardness Meter
Handheld fruit firmness meter with 0.01 resolution, 4 selectable units, 10,000-entry storage, Bluetooth sync, and 12-hour battery for field and lab use.
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Dimensions (L × W × H)
- 206 mm × 85 mm × 40 mm
- Net Weight
- < 500 g
- Measurement Units
- kg/cm², N/cm², lb/cm², kPa
- Resolution
- 0.01 N/cm²
- Measurement Accuracy
- 0.1% FS
- Probe Depth of Pressure
- 10 mm
The Portable Fruit Hardness Meter is a professional handheld instrument designed to measure the firmness of fruits and vegetables with precision, making it well suited for agricultural research, post-harvest quality control, and food processing applications. It quantifies hardness—a key indicator of ripeness, shelf life, and texture—by pressing interchangeable probes into the sample and reporting the result on a clear digital display.
Three probes are included for soft to hard fruit, with diameters of 11.1, 7.9 and 3.5 mm and maximum loads of 52, 102 and 520 kg/cm². Results can be expressed in your preferred unit—kg/cm², N/cm², lb/cm², or kPa—switchable at any time. Measurement accuracy is 0.1% FS with a resolution of 0.01 N/cm², and the auto-peak detection function tracks real-time and peak values and holds the peak reading.
Data management is a core strength of this meter. Each measurement is saved with its peak value, timestamp, location, and ID, and the device stores more than 10,000 entries. Records can be organized into groups (up to 200 groups, 96 entries each), with automatic calculation of average, maximum, and minimum per group—ready for statistical review. Data can be browsed or deleted on the device by time or ID, and Bluetooth sync to a companion mobile app allows further upload to research platforms or computer review.
At under 500 g and 206 × 85 × 40 mm, the meter is genuinely portable for orchard, greenhouse, or packhouse use. A single charge supports 12 hours of continuous operation, and audible alerts notify you of overload conditions or low battery. An optional test rig is available when standardized, bracket-mounted measurements are required for higher reproducibility.
Dimensions (L × W × H)
- 206 mm × 85 mm × 40 mm
Net Weight
- < 500 g
Measurement Units
- kg/cm², N/cm², lb/cm², kPa
Resolution
- 0.01 N/cm²
Measurement Accuracy
- 0.1% FS
Probe Depth of Pressure
- 10 mm
Included Probes
- 3 sizes (soft to hard fruit)
Probe Diameters
- Probe 1: 11.1 mm; probe 2: 7.9 mm; probe 3: 3.5 mm
Maximum Load by Probe
- Probe 1: 52 kg/cm²; probe 2: 102 kg/cm²; probe 3: 520 kg/cm²
Data Storage Capacity
- 10,000+ entries
Group Data Management
- Up to 200 groups; 96 entries per group; shows average, max, and min per group
Battery Life
- 12 hours continuous use per charge
Power Supply
- AC 100–240 V, 50/60 Hz
Data Transfer
- Bluetooth to mobile app, then upload to research platforms; view data on the device, computer, mobile or cloud
Display Features
- Adjustable brightness, backlight, screen rotation, auto-shutdown
Alerts
- Audible warnings for overload and low battery
Optional Accessory
- Dedicated test rig for bracket-mounted measurements
What types of fruit can this hardness meter measure?
The meter ships with three interchangeable probe sizes specifically chosen to cover a wide range of fruit textures, from soft fruits such as berries and peaches to firmer varieties such as apples and pears. It can also be used on vegetables. The probes are 11.1, 7.9 and 3.5 mm in diameter, with maximum loads of 52, 102 and 520 kg/cm². Selecting the appropriate probe for your crop type ensures accurate, repeatable penetration readings.
What measurement units does the meter support, and can I switch between them?
Yes. The meter supports kg/cm², N/cm², lb/cm², and kPa, and you can switch between units instantly on the device. This makes it straightforward to share data with collaborators or comply with reporting standards that specify a particular unit.
How much data can the meter store, and how do I export it?
The meter holds more than 10,000 individual measurement records, each tagged with its peak value, timestamp, location, and ID. Records can be organized into up to 200 groups (96 entries each), with group-level averages, maximums, and minimums calculated automatically. You can search or delete records on the device by time or ID, and transfer data wirelessly via Bluetooth to a mobile app, from which it can be uploaded to a computer or research platform.
How long does the battery last, and how is the meter powered?
The meter provides 12 hours of continuous use on a single charge. It charges via an AC adapter compatible with 100–240 V, 50/60 Hz power supplies, so it works with standard outlets worldwide. To extend battery life between charges, the display brightness and backlight are adjustable and an auto-shutdown function is included.
Can I use this meter for standardized lab-style measurements as well as fieldwork?
Yes. The meter operates as a standalone handheld device for in-field use, and an optional dedicated test rig (bracket) is available for bench-top or lab settings where a fixed, repeatable test position is needed to maximize measurement accuracy and consistency across operators.
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