Galvanic Timed Releases (GTR's) are reliable underwater timing devices. They are also known as POP-UPS. The patented design of the GTR uses two dissimilar metals that corrode at a predictable rate. GTR's must be used in salt water. Their corrosion rate depends on the water's salinity and temperature at the depth being used.
Galvanic Timed Releases come in 1, 2, 3, 4, 5, 6, 7, 10, 14, and 30 day sizes. For prices, click here
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Galvanic Timed Releases (GTR's) are reliable underwater timing devices. They are also known as POP-UPS. The patented design of the GTR uses two dissimilar metals that corrode at a predictable rate. GTR's must be used in salt water. Their corrosion rate depends on the water's salinity and temperature at the depth being used.
