Abstract: A fishing product having a specific gravity greater than 1.04 but less than 4.00 is presented which includes a body formulated from an elastomer compounded with a gravity change additive dispersed throughout the body to stabilize buoyancy in water, mineral oil and crosslinking agents to prevent leaching of toxic materials. The product is adapted for connection with a fishing line by means of a swivel axially mounted in the sinker body and bonded thereto.

Abstract: An electrolytic device adapted for mounting on the interior wall of a container housing sorbent chemicals for detection and display of moisture content. A sandwich or tab-type probe includes superhydroscopic MgClO.sub.4 or CaSO.sub.4 particles which resist electrical current flow when dry and have a higher affinity for moisture than the sorbent chemicals in cartridges or filters. Moisture intrusion is drawn to the anhydrous MgClO.sub.4 or CaSO.sub.4 particles changing their ohmic resistance and thereby enabling visual and nondestructive detection of the moisture intrusion into the container or cartridge. The probe is spaced away from the sorbent chemicals avoiding the transfer of mechanical stresses and any additional pressure drop through the sorbents, thereby permitting the device to be used in combination with a wide range of sealed containers and air filters.