Erlenmeyer Flask, 250mL - Narrow Neck - Borosilicate Glass Gifts_Bar supporting semi-quantitative hydroperoxide and ether

supporting semi-quantitative hydroperoxide and ether peroxide monitoring in the lab

Twelve-position rotary capacitance substitution box selecting one capacitor at a time

and copper

Variety pack to help with experiment of contrasting resistances and temperature

Hand-driven Newton's color disc that spins seven painted segments fast enough to merge into apparent white through persistence-of-vision and additive color mixing

Erlenmeyer Flask, 250mL - Narrow Neck - Borosilicate Glass Gifts_Bar supporting semi-quantitative hydroperoxide and ether250mL CAPACITY Single Erlenmeyer Flasks with 250mL capacity and easy to read white enamel graduations every 50mL INDUSTRIAL QUALITY Made of high quality, heavy duty, borosilicate 3. 3 glass with excellent strength against breakage. Microwavable and autoclavable, with superior chemical durability. Can withstand high temperatures and thermal shocks SUPERIOR DURABILITY Features uniform wall thickness ideal for heating and a reinforced rim for protection