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UV meters measure the ultraviolet light in a particular area, providing valuable data. Using a UV meter can help you find areas where high UV levels are occurring before they cause damage. Most UV meters will measure the intensity of the ultraviolet light between 250 and 400 nanometers. UV light falling in this range can be beneficial for seed germination and for plant growth. However, too much ultraviolet light can cause toxicity for plants and damage to other items. Many UV meters can take measurements regularly throughout the day, giving you key information. Most UV meters have a digital display screen for instant viewing of results. Those who have UV filters installed even can use the UV meter to ensure the filter is working as expected.
