Low actinic red stained glass provides protection to light sensitive solutions.

• Allowing less than 1% transmission below 400 nm and 5% from 400 to 600 nm
• Wide mouth design facilitates mixing, pipette access, sampling and filling
• Unique flat bottom interior permits the use of a standard stir bar

Large permanent white letters make the capacity clearly visible.

Please note: Volumetric flask capacities of 20 ml, 500 ml, 1000 ml, and 2000 ml are not included in the ASTM E288 specifications.