Isotonic Eye Wash Solution

Tap water contains chlorine, minerals and has a variable pH that can irritate the cornea. Sterile isotonic solution is formulated with 0.9% sodium chloride, with a pH close to that of human tears (7.4). It rinses effectively without causing further burning or tissue reaction. In the event of chemical splashes to the eyes, isotonic solution is systematically preferred over tap water by Canadian occupational health protocols.

Yes. Isotonic solution is the solution of choice for irrigating a wound before dressing it. Its salt concentration, identical to that of blood plasma, means that it does not harm living tissues, unlike pure water (which can cause osmotic shock) or concentrated antiseptics (which can delay healing). It is used in hospitals and first aid to clean wounds of debris without harming cells.

Yes. Isotonic solution, isotonic liquid, isotonic solute, and physiological solute all refer to the same product: an aqueous solution of 0.9% sodium chloride. The names vary depending on region and usage, but the composition is identical. In first aid, all these terms refer to the same versatile sterile rinsing product.

Yes. Once opened, the isotonic solution must be used within 24 hours, as its sterility is no longer guaranteed after opening. An unopened bottle has a shelf life indicated on the packaging. It is important to regularly check the expiry dates in your first aid kits and replace expired bottles, especially those of the emergency eyewash.

First aid protocols recommend continuous eye rinsing for at least 10 to 15 minutes, which generally requires between 500 ml and 1 liter of solution depending on the flow rate used. For alkaline splashes (bases), a 20 to 30 minute rinse may be required. Always keep several bottles near an eyewash station in the workplace.

SuperMedic isotonic solution is available online with fast delivery anywhere in Canada, including Ontario, Quebec, British Columbia, and Alberta. Unlike pharmacies, which often offer smaller sizes for home use, SuperMedic provides sizes suitable for professional first aid kits and refilling emergency eyewash stations.