Amazon
ASTM E438, Type I, Class A, Borosilicate 3.3 Glass Pouring ring for drip-free liquid transfer High resistance to chemicals Dual scale metric graduations Durable white enamel printing with large white marking area
ASTM E438, Type I, Class A, Borosilicate 3.3 Glass Pouring ring for drip-free liquid transfer High resistance to chemicals Dual scale metric graduations Durable white enamel printing with large white marking area