Magnetic poles. Battery brands may vary.

Screw base, designed for miniature lamp holders. Package of 10.

Screw base, designed for miniature lamp holders. Package of 10.

Double coil bell measures 2-1/2" W x 5-1/2" L.

Lamp brightness is controlled by the conductivity of liquid in which the two electrodes are immersed. No exposed metal parts.

Astound your class with 5" sparks! Raise hair instantly - no shock hazard. 200,000V potential in humidities up to 90%. Special formula neoprene belt lasts up to 500 hours (spare included). Plastic molded base and housing, 18 cm aluminum globe, P..

Heavy-duty 9V carbon-zinc batteries. Ideal for general lab work. Super cells provide up to twice the life of ordinary general-purpose cells. Battery brands may vary.

These flat electrodes were designed for the Hoffman Electrolysis Apparatus. The platinum lead wires are sealed in glass tubes. The glass tubes are inserted in No. 1 rubber stoppers. These electrodes will fit SB11120M and SB10809M listed.

Two each iron, copper, aluminum, and zinc electrodes. One each carbon and nickel electrodes. All are 4" x 3/4" (10 cm x 1.6 cm).

This specially designed, heavy metal support has binding posts in the base and double clamps on the rod. A special clamp with prongs for supporting the lower part of the apparatus is also supplied. The stand will hold the apparatus securely without caus..