Designed for use in APHA 15.8 test procedures, this bottle is calibrated to 20% for a 9g sample and a scale applied with permanent brown stain. Three rubber stoppers are supplied with each bottle. Capacity: 20% (2mL equals 20%). Tolerance: 0.20% (0.02mL). Subdivision: 0.20% (0.02mL). Sample Size: 9g. Height: 165mm (6.5-inch). Kimble® #: 508-20.