Test Tube, PYREX* 3mL, 10x75mm, are made from special tubing to give the optimum wall thickness. They are well annealed, resistant to heat and chemically stable. These tubes have a white marking spot. Beaded rims are fire-polished.
Premium Clamp - Four Prong, Clamp with swivel boss head, constructed of powder coated steel, 4 Cork lined clamp prongs attached to aluminum rod. Maximum clamp opening is 10.5 cm, 14 cm Stainless Steel Connecting Rod