Here is a quick conversion chart:

    100 ml = 3.3 or 3.4 oz
    50 ml = 1.7 oz
    30 ml = 1 oz
    15 ml = 1/2 oz
    10 ml = 1/3 oz
    7.5 ml = 1/4 oz
    5 ml = 1/6 oz
    3.7 ml = 1/8 oz = 1 dram

Note that all of these are approximate; strictly speaking, 1/2 oz is 14.787 ml.

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