Borosil® Amber Reagent Bottles, Plain, Narrow Mouth, Graduated with Interchangeable Flat Head Solid Glass Stopper ISO 4796-2 Ground neck Borosilicate glass Durable Matt finish enamelled area for marking 500 mL CS/10. Specifications. Material: 3.3 Borosilicate Glass Bottle Volume: 500 mL; Color: Amber; Dimension: 89mm x 182mm