UB Care
Additional Warranty can be added to this product for other 12 or 24 months.
Discover more about our warranty policy.

Measures mechanical sensitivity thresholds. For the assessment of hypersensitivity and allodynia for analgesic, nociceptive, neuropathic and postsurgical studies. Original design with clear prism for fast localization of stimulation site and reduced animal stress. Digital data display.
Original design with clear prism for fast localization of stimulation site and reduced animal stress. Digital data display.
Feature | Benefit |
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Resolution: 0.1g |
High Accuracy |
Maximum Applicable Force: 1000g |
Different Animals |
User-controlled application of force rate |
|
*Speaking about force, although the sensor can detect forces from 0 to 1000g, it is reasonable to set the device lower limit to 5g, given by difficulty, even for the most skilled user, to apply forces below this threshold.
Operation | |
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Commands |
Via Soft Buttons |
Read-out |
LCD Screen, via the DCA3 Software on the PC |
Start |
Automatic when force applies to the instrument |
Stop | Automatic or by pedal |
Force Ranges |
0-50gf, 0-200gf, 0-1000gf |
Force Increasing Rate |
Monitored via e-VF Electronic Unit or via the DCA3 Software on the PC |
Force Response |
in 0.1gf steps |
Latency Time |
in 0.1s steps |
Connection to PC |
via USB cable (A to mini-B) and e-VF Software (DCA3) |
Power Requirement |
Either battery operated, via USB cable connected to PC, included power supply (100-240 VAC, 50-60Hz) |
Operating Temperature |
10°C to 40°C; 5% to 95% RH (non-condensing) |
Sound Level |
Negligible |
Physical | |
Total Weight | 0.8 Kg |
Shipping Weight | 2.7 Kg approx. |
Packing Dimensions | 46 x 38 x 27 cm |
Warranty | |
Warranty | 38450 is covered by a 12-month warranty + 12 months after product registration |
UB-Care | Additional UB-Care can be added for other 12 or 24 months |
Impaired cutaneous sensation is usually first manifested in a loss of light touch detection. The Electronic Von Frey was developed to quantify light touch in the laboratory animal.
The classic instrument for test of touch sensitivity is the Von Frey hair or, more specifically, the Semmes- Weinstein set of Von Frey Hairs, i.e., 20 monofilaments in a linear scale of physical force.
The hair is pressed against the skin, the force applied increases with increasing hand pressure, until the hair bends; once the hair is bent, increasing hand approach causes further bend, but negligible additional force on the skin. In this way, a given filament always applies the same force, not subject to variation by the energy of the operator.
The Semmes-Weinstein set can be used on rodents (which respond to light touch of the paw, if they feel it, by a paw withdrawal reflex). However, the involved procedure is tedious and time-consuming because several stimulations must be performed for a single test (i.e. a different filament for each force level).
Compared to the classic Von Frey hairs, the electronic Von Frey device (e-VF) has the advantage of ensuring a continuous force application along the whole force range of the sensor (i.e. 1-1000 gf), by using a rigid metal or soft plastic tip (optional) and the capability to record automatically the force when the paw withdraws.
Moreover, the metal tip used in the e-VF is the same as the one used in the classic Ugo Basile Dynamic Plantar Aesthesiometer (PN 37450), allowing consistent comparison of results among the two instruments.
38450 EVF Electronic Von Frey | |
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38450-001 | Electronic Unit |
38450-004 |
Von Frey Applicator, with Prism to locate the aimed area on the animal paw. Complete with transducer |
38450-310 | Glass Prism |
38450 330 | Filament, with magnetic fixing |
37215-303 | Pedal Switch |
52010-325 | USB Lead |
E-AU 059 | Universal Power Supply |
E-AU 101 | USB pen-drive, including instruction manual and software |
Optional | |
37450-278 | Base assembly for plantar stimulation, including support with columns, perforated metal sheet and multiple-configuration animal-enclosure, from 3 to 12 spaces |
37450-045 | Large Perforated Metal Sheet, with 4 legs, 40cm height (animal enclosure 37000-007 is not included and should be ordered separately) |
37450-085 | Large Perforated Metal Sheet, with 4 legs, 80cm height (animal enclosure 37000-007 is not included and should be ordered separately) |
Additional Warranty can be added to this product for other 12 or 24 months.
Discover more about our warranty policy.