Utilize Puregrip® glass media bottles at your research, biotech, or pharmaceutical workplace today. PUREGRIP® Bottles, Reagent, Transparent Graduated with GL45 Screw Cap and Pouring Ring, 100 mL, 10/case. $84.04. $108.76. PUREGRIP® Bottles, Reagent, Graduated with GL45 Screw Cap and Pouring Ring, 250 mL, 10/case. $93.37.