How the math works
Reconstitution dissolves a freeze-dried compound in a measured volume of diluent. Every figure follows from two numbers: the amount of compound and the volume of liquid.
- Concentration (mg/mL) = compound in vial (mg) ÷ diluent (mL)
- Micrograms per mL = mg/mL × 1,000
- Volume holding a set amount (mL) = amount (mcg) ÷ micrograms per mL
- Sprays per bottle = solution volume (mL) ÷ volume per spray (mL)
Example: 10 mg in 2 mL is 5 mg/mL, or 5,000 mcg/mL. Every 0.1 mL holds 500 mcg, so 250 mcg is in 0.05 mL (50 µL).
Use the measured amount
The labeled amount is nominal. For exact math, use the net content the lab measured for your batch, printed on its certificate in the COA Portal.