Volumetric flasks with permanent blue inscriptions. Class A Borosilicate glass.  Fitted with neutral, acid resistant polypropylene stopper. 

Available in the following sizes:

• 50ml - Stopper Size 12/21
• 100ml - Stopper Size 14/23
• 250ml - Stopper Size 14/23
• 500ml - Stopper Size 19/26
• 1000ml - Stopper Size 24/29
• 2000ml - Stopper Size 29/32