Bottle Top Dispenser, Capacity - Metric 50 mL, Graduation Increments - Metric 1 mL, Minimum Graduation - Metric 5 mL, Maximum Graduation - Metric 50 mL, Product Type Bottle Top Dispenser, For Use With Bottle Neck Adapter, Delivery Jet, Stopper, Autoclavable Yes, Accuracy +/-1.1 Percent, Graduated Yes, Includes Bottle Top Adapter, QC Certificate, Volume Setting Button, Thread Size 45 mm