Routine nasal hygiene is the widest use for this range. Dust, pollen, and airborne particles settle on the nasal lining throughout the day, and a rinse clears that load before it hardens into crusting. Isotonic Type I fits this pattern because its salt level sits near that of the mucosa itself, so repeated use does not dry the tissue out. Community pharmacies and general practice move the 10 mL and 20 mL canisters fastest, since patients carry those with them.
Allergy and sinus clinics use nasal irrigation fluid as an adjunct alongside prescribed therapy. Rinsing before a topical steroid clears mucus off the turbinates and gives the drug a cleaner surface to reach. Where congestion is heavier and secretions have thickened, hypertonic Type II is the grade ENT teams reach for, because the stronger salt load draws fluid out of a swollen lining. Choosing between the two grades is a clinical call, not a purchasing one, and both sit under the same product name.
Post-operative care is the third setting. After septoplasty, turbinate reduction or endoscopic sinus surgery, patients are asked to rinse regularly to lift crusts and dried blood from the operated cavity. The 100 mL canisters suit that longer course, and NIF-100-B pairs the volume with an adult nozzle. Day-surgery units and ward stores also keep smaller sizes on hand for the first rinse before a patient goes home.
Occupational health teams working in dusty or high-pollen trades order the same Nasal Irrigation Fluid for end-of-shift use, usually in the smaller pocket sizes.

