ASTM Class B Borosilicate Glass Volumetric Flask with Snap Cap, Blue Graduations Capacity:1000mL Adjustable elastic strap and ventilation

Adjustable elastic strap and ventilation ports distinguish these clear safety goggles for chemistry

Bend receiver adapter with vacuum connection in heavy-duty borosilicate glass features 24/29 socket for reduced-pressure distillation procedures

Polaroid film 45 x 23mm sits in 50 x 50mm plastic frames as a matched pair

5V flash-lamp bulbs on E10 miniature Edison screw bases

ASTM Class B Borosilicate Glass Volumetric Flask with Snap Cap, Blue Graduations Capacity:1000mL Adjustable elastic strap and ventilationSnap fit plastic cap seals the flask without a ground glass joint, matching ASTM Class B tolerance for student bench dilution and stock preparation.