A 1 oz (30ml) perfume bottle is considered a small standard size. Contains roughly 300 sprays. Typically lasts 2-3 months with daily use. One ounce, or how big is 1 oz, can be visualized as a shot of liquor (1 fl oz). A 0.17 oz (5ml) perfume sample offers the perfect balance between enough volume to truly evaluate a scent across different environments and skin chemistry while minimizing waste, cost, and clutterer specially if you’re exploring multiple perfumes ,travel friendly, and offers about 50 sprays. A 0.03oz (2ml) offers the same as the 5ml, however is a cheaper and less sprays at about 20 total sprays.