Intranasal calculation questions

Users test actual output by filling a bottle and either counting sprays to empty or weighing successive sprays on a scale. One person measured 0.13 ml per spray after counting; another recommends pre-testing a primed bottle into a syringe. Sterile saline is preferred over plain water for nasal safety, and refrigeration is advised. Calculators exist but require knowing the per-spray volume first.

• Measure real output by counting sprays from a known fill volume or by repeated weighing
• Prime the bottle before testing because that is how it will be used
• Sterile saline is better than plain water for sinus health
• Smaller bottles often deliver less than 0.1 ml per spray
• Split the total dose between nostrils after calculating concentration

Water versus sterile saline for reconstituting the solution

Whether spray volumes are consistent enough across bottles to skip individual testing

Nothing here is advice.