These borosilicate glass volumetric flask sizes comply with requirements for Type 1, Class A "Unserialized flasks"

Reference: ASTM E288 and Federal Specifications NNN-F-289.

Note: LG-8110-100 and LG-8110-134 are not volumetric shaped.

They are supplied with a standard taper penny head glass stopper. Calibrated "to contain" at 20°C.