Product description ------------------- 2 x 500ml bottles (1L total) of premium quality colloidal silver made to approx. 25ppm (parts per million). At 25ppm, our products contain a higher concentration of silver ions and nano-particles than the majority of other suppliers. Very effective at eliminating viruses, germs and pathogens. At Pro Colloidal Silver, we produce our colloidal silver to the highest standards. Our products contain nothing more than 100% pure steam-distilled water (which we ensure always has a starting ppm of zero) and 99.99% silver. Items are sent via Royal Mail and packages are secured with anti-tamper security seals for complete peace of mind. Take advantage today of our "Buy one get one free (2 for 1 deal)"! Ingredients ----------- Pure steam distilled water (with a starting ppm of zero), 99.99% pure silver (nano-particles & ions)