In October 2012, Microsoft released a new version of Microsoft Office Mobile for Windows Phone 8 and Windows Phone 7.8. This was followed up by the release of Office Mobile for iPhone on 14 June 2013, and Office Mobile for Android phones on 31 July 2013.
That's an easy number to work with, so let's use it. 20 drops/milliliter = 20,000 drops/liter =1,000,000 drops / 50 liters. That means one part per million is the same as one drop of a substance in a million drops, or 50 liters, of water.
Given that: Water has a density of 1.0 kg / L, or 1.0 g / ml, AND a clean 10 fl oz can has a capacity of 295.7 ml. Assuming: Each drop of water has a volume of 0.05 ml (20 drops per ml, per link below). Therefore: The mass of a single drop of water 0.05 g; the can can contain 295.4 ml / 0.05 ml per drop = 5908 drops (5907.99999 rounded); the can will contain 295.7 g of water when filled.