F-751 Avocado Operation Manual Rev. 1/25/2023
Felix Instruments
1554 NE 3rd Ave
Camas, WA 98607, USA
Phone: +1 (360) 833-8835
Fax: +1 (360) 833-1914
www.felixinstruments.com
[email protected]
Introduction
Felix Instruments’ F
-751 Avocado Quality Meter is a fast, portable tool for non-
destructively measuring avocado fruit quality. The F-751 can provide rapid dry
matter estimations for large numbers of fruit, giving orchard-wide estimations
and insights previously unattainable through traditional testing me
thods
.
The F-751 primarily measures dry matter (DM). Dry matter is the inverse of
moisture content and can be thought of as the part of an avocado which would
remain if all the water content were removed. Due to its direct correlation to
mesocarp oil content, dry matter is the most common quality and maturity
index used to assess avocados. Maturity at harvest is directly correlated to
ripening time and fruit quality.
The F-751 uses light interactance in the NIR wavelength range to determine the
DM content of a conical region of mesocarp in the location where the lens is
placed on the fruit. Since the F-
751 can be thought of as a “spot measurement”,
we recommend scanning at both the dorsal and ventral sides of the equator of
the avocado
and using the average to gain the most accurate insight into the
average dry matter of the whole fruit.
