Searching for evidence of critical thinking in discourse has roots in a definition of critical thinking put forth by Kuhn (1991), which places more emphasis on the social nature of discussion and knowledge construction.
:Ounces. 1 mL = 0.033814 fl oz; 1 fl oz = 29.57353 mL. US Fluid Ounce (US Fl. oz) is a United States customary volume unit. Please don't be confused with the ounce which is a mass unit. Similar US customary volume units include pint (16 fl. oz), quart (32 fl. oz), gallon (128 fl. oz), cup (8 fl. oz) etc.
Usually, the term fl oz refers to the US customary fluid ounce with a volume of 29.5735295625 ml [1], but getting 2/3 fl oz in ml may also be related to the US fluid ounce for food labelling, defined as 30 ml [2]. In the UK, there is only one liquid ounce of 28.4130625 milliliters [3].