These Biomass Flasks are made of quality borosilicate glass. All variants have a 24/40 ground glass bottom joint, but their top joints vary to fit our multiple sizes of distilling arms. The large top openings are ideal for inserting materials for distillation.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.
California Proposition 65 Warning: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.