... 2.Material:glass 3.MOQ:500pcs 4.Deliveryl:15days Lab wide mouth glass burette (This is our star products, best quality ... , reading for the first time must first adjust the liquid level under scale 0 0 or scale. 4, when reading, concave ... line of sight, scale, the liquid surface in the same level. 5, readings, observations experiment change, control the dosage. 6,Acid ...