Deep Sea Salinity measurement Hydrometer

The Unique design of the Deep six hydrometer allow hobbyist to take water sample at six inch in depth without submerging their hand into the water, thus avioding the possibility of containmentation .

Sample of the water being measured taken at six inches in depth have also proven to be more accurate than salinty taken on the surface sample.

Each unit of the Deep six is calibrated and tested for accuracy.