Simax Reagent Bottle 100, 250, 500, and 1000 ml - Borosilicate Glass - with Blue Screw Cap. Reagent Bottle made of Borosilicate Glass, Brown, With GL45 Standard Size PP Plastic Cap & Ring. These heavy-duty bottles can be used for storage as well as mixing and sampling. Bottles have permanent white enamel graduations and marking spots. Chat Now