US$ 25.00
Steeply curved concave glass mirror at 50mm aperture and 75mm focal length
giving students shape variation on top of the material-density comparison
Faraday's ice pail
Funnel measures 16
10-Pack Chemical-Resistant Polypropylene Stoppers, 12/21 Pack Size_12 Steeply curved concave glass mirrorPack of 10 chemical resistant polypropylene stoppers fits 12 21 joints for sealing ground joint vessels with chemical and impact resistance.