hardware braces
ginsberg scientific 7 1821 viscosity tube demonstration apparatus set of 4
the viscosity of four different liquids can be visually compared with this apparatus each tube contains different weight fluid and a 375in plated steel ball the balls are lifted just above the line on the tube with a neodymium magnet and then released students compare the time it takes for the balls to fall through the weighted liquids and settle on the bottom of the tubes liquids not included instructions provided american educational products have a lead ship time of 21 days sku amed3176