PYREX®, borosilicate glass, amber, low actinic, with tapered ground stopper.

• Individually serialized
• Markings are sharp and permanent
• Low actinic glass provide protection for material sensitive to light

Each flask is individually serialized and supplied with a Certificate of Identification and Capacity, traceable to NIST standards. The protective color is an integral part of the flask, which retains its mechanical strength, chemical stability and thermal resistance.