Jual Opti Science CCM-300 - The Chlorophyll Content Meter
Keterangan:
Chlorophyll content
measurement of:
Conifer needles
Turf grasses
Rice
Small leaf
grain grasses
Fruit
CAM plants such as:
Agave, Prickley pear
cactus & Pineapple
Arabidopsis
Moss
Stems & petioles
Algae on rocks
Features:
Provides reliable results regardless of leaf
or sample size, thickness, and shape.
• Affordable
• Lightweight, Hand-Held Design
Optimized for Field Work.
• High degree of correlation with chemical
tests, even at very high chlorophyll content
levels.
• Graphic Color touch screen & data display.
• Measurement modes are included for discrete single
measurement, and sample averaging of measurements.
• Choice of fluorescence ratio readout or
direct readout in relative chlorophyll content.
• Almost unlimited measurement storage -
up to 2 gigabytes of non volatile flash
memory.
• USB output / files are comma delineated & may be opened directly in Excel or other spread sheets.
The science for measuring chlorophyll content using
chlorophyll fluorescence has been well established. The
cost for such systems, however, has been much higher
than for the more popular light absorption instruments
available. As a result, the ability to measure very small
samples, curved samples and very thick samples has been
out of reach for most budgets.
With the CCM 300, Opti-Sciences has engineered a
fluorescence solution that is much closer to the cost of
absorption techniques.
While it is still more cost effective to use the
CCM 200plus for medium size and larger leaves found on
most wheat or corn plants, the CCM 300 is now in an
affordable price range to allow cost effective measurement
of chlorophyll content in very small leaves, fruit, conifer
needles, moss, cactus, lichens, algae on rocks, and other
difficult to measure samples.
Unlike absorption techniques that require full coverage of
the measuring aperture, and a relatively flat surface for
reliable measurement, this fluorescence technique does
not. Instead, light is absorbed by the sample at one
wavelength, and it is re-emitted at longer wavelengths.
This allows measurement of curved samples like
individual conifer needles, leaves that are too thick for
absorption techniques found in CAM plants, and samples
that are too small for reliable absorption technique
measurements such as moss, turf grasses, Arabidopsis,
and rice.
Furthermore, the correlation with chemical measuring
techniques is excellent, even at higher chlorophyll content
levels.
The design of this instrument is based on the science from
Gitelson A. A., Buschmann C., Lichtenthaler H. K. ( 1999)
Samples may be light adapter or dark adapted. It does not
significantly change the result. For samples with lower
signal strength, measurement reliability is improved by
averaging multiple measurements. The measuring aperture
does not have to be fully filled.
The fluorescence emission and excitation wavelengths
used in this test were designed to provide the maximum
chlorophyl measuring range, and minimize possible
measuring errors.
Reference for using the technique:
Gitelson A. A., Buschmann C., Lichtenthaler H. K.
( 1999) “ The Chlorophyll Fluorescence Ratio F735/ F700
as an Accurate Measure of Chlorophyll Content in Plants”
Remote Sens. Enviro. 69: 296-302 ( 1999)
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