These 250 mL PYREX® heavy duty boiling flasks provide increased mechanical strength. The flask features walls which are 25-30% thicker than the standard version. O.D. dimensions have not been changed. They have full length outer 24/40 Standard Taper joint
EcoChoice Claim
I-RECS cover 100% of manufacturing electricity consumption
EcoChoice Narrative
One or more facilities manufacturing this product is 100% covered by renewable energy through the purchase of unbundled energy attribute certificates (EACs).