THIS IS IMPORTANT.
Our 600ppm (parts per million) concentrate is very potent. A single 50ml bottle is enough to mix up 1 litre of silver colloid at our regular concentration of 30ppm when mixed with clean, bottled water. Where particularly strong anti-bacterial performance is required spray the concentrate directly onto the affected area.
WARNING! This product will stain clothing and skin for a period of time.
Silver Colloid Travellers' Concentrate 600ppm 50ml
Demineralised water, nanosilver particles 600ppm