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Detects Stress Earlier Than Visual Monitoring-Before Plant Growth Is Affected

Based on an exclusive patent license from NASA, the Spectrum Chlorophyll Meter uses point and shoot technology to instantly tell you relative chlorophyll content, a key early indicator of plant health.

Integrates a large 0.5" diameter area at 12" on a plant leaf or a 4.5" diameter spot on turf grass at 4 feet. High powered lasers outline the edges of the measured sample area of leaf or canopy.

Ambient light sensor automatically corrects for varying light conditions. The handheld Spectrum meter calculates and displays a running average for multiple readings while simultaneously recording each sample in the built-in data logger for detailed analysis later at your PC. *** Try before you buy! *** Call for details.

Click to view the CM-1000 Chlorophyll Meter user manual.


Measurement Sample: Plant leaves, turf grass canopy

Measurement System: Reflectance; Ambient and reflected 700 nm and 840 nm light are used to calculate the relative chlorophyll index

Measurement Area: Conical viewing area between 12 and 72 in

Minimum Distance: 12 in (30.5 cm) from lens

Maximum Distance: Accuracy is unknown beyond 72 in from lens

Distance From Lens: Sample Area (Diameter):
12 in (30.5 cm) 0.53 in (1.35 cm)
18 in (45.7 cm) 1.21 in (3.07 cm)
48 in (1.22 m) 4.65 in (11.8 cm)

Receptor: (4) photodiodes; (2) for ambient light and (2) for reflected light from the sample (leaf)

Measurement Units: Index of relative chlorophyll content; 0 to 999

Measurement Interval: 2 seconds per measurement

Repeatability: ±5% of reading

Data Logger: Requires software and PC interface cable; Capacity:1,350 measurements with GPS/DGPS; 3,250 measurements without GPS/DGPS; nonvolatile memory

Battery/Life: 2 AAA batteries (included); approx. 3,000 measurements

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Manufacturer Info
Spectrum Technologies