OPTI-SCIENCES CCM-300

The Chlorophyll Content Meter for very small leaves and difficult to measure samples 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)