Reagent Bottle, Amber Glass, Wide Mouth, 500ml / 17 Oz: Science Lab Reagent Bottle. ULAB Scientific Reagent Bottle set, 1pc of wide mouth bottle, 1pc of narrow mouth bottle, with ground-in glass frosted stopper, Amber glass, Vol. 250ml, URB1011 Reagent Bottles are useful for storing both liquids and powders.