Why Diphoterine® Outperforms Water for Chemical Burns
Water has been the default response to chemical burns for decades. The science has moved on — and the difference matters from the very first second.
When a corrosive chemical hits skin or the eye, the clock starts immediately. In those first seconds, most workplaces offer one response: water. Wash for 15 minutes as per EN15154. And while it is far better than nothing, water alone is a passive tool in an active emergency.
Water does one thing: it washes the chemical off the surface. What it cannot do is stop the damage already under way. Once a corrosive agent contacts tissue, it begins spreading inward. Water has no active chemistry it rinses and dilutes. In eye injuries, there is an additional problem: water is thinner than the fluid inside the eye, so it can actually draw chemical agents inward rather than flushing them out, potentially deepening the injury.
Diphoterine® is different in kind. It is an active washing solution that works through three linked mechanisms simultaneously. The first is mechanical washing — it removes surface contamination just as water does. The second is hypertonicity: Diphoterine® is more concentrated than tissue fluid, which creates an osmotic draw that pulls diffused chemicals back out of tissue rather than pushing them further in. The third — and most powerful — is its amphoteric and chelating action, which actively renders all seven major classes of chemical aggressor harmless: acids, bases, oxidisers, reducers, chelating agents, solvents, and alkylating agents.
That last point has real practical weight. In a chemical incident, the person reaching for the first aid kit rarely knows the exact substance involved, its concentration, or its pH. With water, it does not matter — you flush regardless. With Diphoterine®, it also does not matter: the same solution works across the full range of chemical classes, without any need to identify the substance first.
Lab studies show it takes up to 17 times less Diphoterine® than water to bring tissue back to a safe pH — and twice as many cells survived Diphoterine® decontamination compared to water in the same test.
That 17x figure comes from a published laboratory study where Diphoterine® also demonstrated significantly better cell survival than water (p<0.001) [1]. Across multiple research groups, Diphoterine® consistently achieved faster pH recovery and reduced tissue damage compared to water or saline controls [2].
In clinical settings the advantage is consistent. A study at a UK specialist burns centre found wounds decontaminated with Diphoterine® showed significantly greater pH recovery than those irrigated with water alone — a pH change of 1.076 versus 0.4 (p<0.05) [3]. A separate UK eye injury case series found Diphoterine® corrected eye pH where saline irrigation had already been tried and had failed, using an average of just 520ml — compared to the 2,700ml of saline that had not resolved the problem [4].
Pain reduction is another consistent finding across the evidence base. A worker in less pain cooperates better, is less likely to pull away, and is easier to assess for injury severity in the critical first minutes.
Diphoterine® is a Class IIa medical device — sterile, non-toxic, non-allergenic, and phosphate-free. It has been proven in industrial and clinical settings for over 30 years. When it is the only option, water remains the right answer, because speed always comes first. But for any site with genuine chemical exposure risk, Diphoterine® is the better product — and the evidence now supports saying so without qualification.
REFERENCES
[1] Fosse C et al. (2010). Decontamination of tetramethylammonium hydroxide (TMAH) splashes: Promising results with Diphoterine® in vitro. Cutaneous and Ocular Toxicology, 29(1):10–15.
[2] Lewis CJ et al. (2017). Is it time for a change in the approach to chemical burns? Journal of Plastic, Reconstructive & Aesthetic Surgery, 70(5):563–567.
[3] Zack-Williams SD et al. (2015). The clinical efficacy of Diphoterine® in the management of cutaneous chemical burns: a 2-year evaluation study. Annals of Burns and Fire Disasters, 28(1):9–12.
[4] Nahaboo Solim MA et al. (2021). Clinical outcomes and safety of Diphoterine® irrigation for chemical eye injury: a single-centre UK experience. Therapeutic Advances in Ophthalmology, 13:1–10.