Pyrex® Graduated Weathering Test, 100 mL Volume, O.D. × H 37 mm × 200 mm, Corning (CAT#: STEM-L-2042-LKN)

The Pyrex® Graduated Weathering Test from Corning is a conical bottom tube. Graduated upward to 0.5 mL in divisions of 0.05 mL, from 0.5 mL to 3 mL in 0.1 mL divisions, from 3 mL to 5 mL in 0.5 mL divisions and from 5 mL to 100 mL in 1 mL divisions. Made with a 3 mm vent hole located 180° from the front of the tube.