Chlorophyll fluorometer SPAD 502 Plus

The SPAD 502 Plus Chlorophyll Meter instantly measures chlorophyll content or “greenness” of your plants to reduce the risk of yield-limiting deficiencies or costly overfertilizing. The SPAD 502 Plus quantifies subtle changes or trends in plant health long before they’re visible to the human eye. Non-invasive measurement; simply clamp the meter over leafy tissue, and receive an indexed chlorophyll content reading (-9.9 to 199.9) in less than 2 seconds. Assess nitrogen needs by comparing in-field SPAD readings to university guidelines or to adequately fertilized reference strips. Research shows a strong correlation between SPAD measurements and leaf N content. •Instantly measures chlorophyll content or “greenness” of your plants on a scale of -9.9 to 199.9 •Non-invasive, non-destructive measurement •Trend graph stores and displays up to 30 measurements •Waterproof design •Compare in-field SPAD readings to university guidelines •Research shows a strong correlation between SPAD measurements and leaf N content •Available with or without a built-in data logger •Includes hard carrying case and batteries