Delmhorst GB-1 Gypsum Sensor Blocks for Soil Moisture Meter

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The blocks are made of gypsum, cast around two concentric, stainless steel electrodes.

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The GB-1 measures 7/8” dia. x 1 1/8” in height.

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The Delmhorst GB-1 Gypsum Sensor Blocks for Soil Moisture Meter are made of gypsum, cast around two concentric, stainless steel electrodes. They are manufactured under controlled conditions to obtain a maximum degree of uniformity and fast response to soil moisture changes. The Delmhorst GB-1 measures 7/8” dia. x 1 1/8” in height. It is the most widely used sensing unit, easy to install and especially suited for extensive sampling of soil at various depths.