PLUM pH Neutral Eyewash is a 4.9% phosphate buffer that will quickly and effectively neutralize even very strong acids and alkali. The liquid consists of phosphate salts that are present in the body. The hydrogen phosphate buffer is effective against acids, whereas the dihydrogen phosphate buffer reacts against alkali.
We have tested the neutralising effect of pH Neutral for both strong acids and alkali compared with the effect of ordinary eyewash with 0.9% sodium chloride. The test clearly shows that pH Neutral will quickly neutralize both acids and alkali to a harmless pH level. In case of chemical eye accident, you can use this unit to rinse your eyes before continuing with the 500ml PLUM Emergency Eyewash (Model EP 4604) until you reach a doctor or an emergency room.