Snoot! Amber Nasal Glass Sprayer for Intranasal Insulin, Colloidal Silver and Saline Applications, 30ml (1oz) -dispenses .1 ml = 10 IU Empty 2-Pack

Here you go https://www.amazon.com/Sprayers-Intranasal-Insulin-Colloidal-Solutions/dp/B00JZ29SQ6 It's standardized in the sense that it's usually either .04ml -.1ml or .14ml per spray, with most being .1 THis product advertises being .1 YOu just need to search for exactly what you're looking for, mate