Carbon Electrodes in Rubber Stopper for Hoffman Voltameter, 8cm Build to Order Plastic-resin Hall's carriage at 5

Plastic-resin Hall's carriage at 5

sized to mount alongside a tone generator for converting electrical signals into audible tones during sound-wave demonstrations

Dovetail-jointed hardwood seven-place test tube support holds tubes up to 13 mm in diameter upright during classroom chemistry and benchtop work

mounted on a 5-inch stainless steel rod with nontoxic powder-coated zinc alloy

Carbon Electrodes in Rubber Stopper for Hoffman Voltameter, 8cm Build to Order Plastic-resin Hall's carriage at 5Replacement 8cm carbon electrodes pre mounted in a leak proof rubber stopper for the CH0740B Hoffman Electrolysis Apparatus, sized for ammonia solution decomposition work.