These Duran® bottles have easy-to-read scale and large labeling field for easy marking. Can be used with blue quick release closure (integral lip seal) and pouring ring for drip-free pouring and clean, safe working. Available in six sizes: 500 mL, 1,000 mL, 2,000 mL, 5,000 mL, 10,000 mL, and 20,000 mL.