Classroom Electrolyzer Demonstration Apparatus Subcategory_Reflection and Refraction this replacement key matches the

this replacement key matches the goggle sanitizer cabinet lock for classroom stockroom maintenance

Black rubberized vinyl halter apron measures 27 by 42 inches

Pair of 400-turn copper coils on an adjustable base

providing roughly 15 henries of inductance for AC experiments on phase

Slim 75 x 12 x 5mm chrome-steel bar pair (2

Classroom Electrolyzer Demonstration Apparatus Subcategory_Reflection and Refraction this replacement key matches theDemonstration scale electrolyzer sized for whole class viewing, letting gas evolution and electrode color changes stay visible from the back of the room during water decomposition lectures.