Borosilicate 500ml Erlenmeyer Flask Narrow Neck Graduated Laboratory Glassware

500 mL borosilicate Erlenmeyer flask (Boro 3.3) with narrow neck and clear molded graduations to 500 mL. Visible scale markings at 200/300/400/500 and a small circular manufacturer mark. Standard wide-base conical shape provides stability and easy mixing. Laboratory-grade glass suitable for chemistry, education, brewing, mixing, or decorative display. Hand wash and avoid sudden temperature changes to preserve markings and integrity.