This has to do with perfume, I swear! Valois is one of the leading manufacturers and providers of spray pumps for fragrances including clientele like Armani and Guerlain. You can check out their extensive list of products here.
Meanwhile, I marvel over how often people ask how many pumps they can get out of [xxx]ml of perfume. Seems the answer depends on what atomizer you have. Not exactly shocking to me, but the following generic formula should give you a close estimate:
14.25 sprays per 1ml
Take 14.25 and multiply by how many ml is in a fragrance. If you need to convert from oz to ml, consider this formula:
1 oz per 29.57 ml
Multiply oz by 29.57 to get the approximate ml.