20Ω Resistance Coil Unit, Max 4.4V Chemical_Sodium Hypochlorite Steeply curved concave glass mirror

Steeply curved concave glass mirror at 50mm aperture and 75mm focal length

Used to display the four oxidation states of vanadium through stepwise color changes

this presumptive blood test kit uses phenolphthalein and hydrogen peroxide swabs to reveal blood presence through a rapid color change

Flexible half-size spinal column carries nerve branches through vertebral foramina alongside attached pelvis and femur stubs for spinal anatomy and radicular pain teaching

Cork-jawed safety tongs measuring 12 inches in stainless steel accommodate both round-bottom flasks and straight-sided beakers

20Ω Resistance Coil Unit, Max 4.4V Chemical_Sodium Hypochlorite Steeply curved concave glass mirrorTwenty ohm resistance coil unit in a 2x1. 5x2 inch plastic enclosure with 4mm sockets, rated to 4. 4V max for current limited Ohm's law work and voltage divider investigations.