Secchi Disc with Holding String Lab Equipment_Sterilization Equipment Set of 5 glass bulbs

Set of 5 glass bulbs

pairing with a motor unit to trace the full light-to-electrical-to-mechanical energy chain

Polished hardwood test tube rack holding 12 tubes up to 25 mm across twelve draining pins

open at one end for mercury barometer construction and atmospheric pressure demonstrations

Liquid propane Bunsen burner provides standard flame heating for chemistry and biology classroom laboratories at the benchtop

Secchi Disc with Holding String Lab Equipment_Sterilization Equipment Set of 5 glass bulbsLowers into ponds, lakes, or streams on its holding string until the alternating black and white quadrant pattern disappears, giving a direct field reading of water clarity.