The Big and Dandy NBOMe-2C-C (25C-NBOMe) Thread

[TheAzo]

Does anyone know how much liquid (in ml) one spray from a metered pump nasal spray bottle (drixoral brand 25ml bottle) has?

Is there any way to easily figure this out?

Easy. Fill it with 25ml of water (or 10 if you're lazy). Then start pumping it, counting the number of pumps until it runs out. Divide 25ml (or 10) by the number of pumps, and there you go. This will take a while (probably over 250 pumps)
They may have done the math for you, actually - read the back, and see if it has a total amount of whatever it's supposed to have in it, and an amount per spray.

Re: spray volume changing, the ones I got, when measuring the spray volume on a 0.1mg scale, came out to 0.0875, +/- 0.0020 ml - that is, within 2.5%. So, once you figure out how much per spray, it's pretty accurate.

 

[jamaica0535]

Smokey,

Its good to remember that you can measure liquid volume very precisely with a scale. 1g=1ml So put some water in it, set on scale and it might read like 15.58g or 15.6 if your scale isn't that accurate. Write that number down. Spray and put back on scale, most seem to be pretty close to .1g per spray 15.48g or 15.5.

When preparing solution, tare the bottle, add distilled water until its 24.5 and add a small bit of everclear for sterility until it reaches 25g.

Oral syringes make great volumetric tools, the metric system makes it easy.


atara edit: if you're reading this, the new thread is over this way