Colloidal Silver 100ppm

Silver has been used for fighting germs and preventing infections for centuries. The nano form of this material is becomming even more popular due to easy applicability and product availability. Well known antibacterial, antiviral and antifungal properties are enhanced by small particle size and large surface area (nanoparticles are thus more efficient). 
The product serves for modification of cosmetic products, paintings or other individual application.
Colloidal or Ionic Silver - what is the difference?

Colloidal or Ionic Silver - what is the difference?

Colloid by definition means ultrasmall particles dispersed in a continuous medium (liquid in our case) whose properties depend on the large specific surface area. Ionic by definition means atoms, that are missing an eletron, or have an extra electron. Most products advertised as “colloidal silver” contain mostly silver ions, not silver particles, so technically they are silver solutions, not silver colloids.

Visually it should be quite easy: colloid silver is represented by a yellow-to-brown colour, where the hue depends on concentration of silver and the particle size (or the age of the product respectively). Ionic silver products are transparent, the presence of silver ion can be easily verified by adding of the kitchen salt (NaCl) which results in formation of non-soluble silver chloride (AgCl represented by white turbidity). Products manufactured by electrolysis (AC, DC, high or low voltage) are typicaly ionic silver solutions, not colloids.
Majority of vendors declare their ionic silver wrongly as "colloidal" and "nano" product, they usually provide following recommendations: "the product has to be stored in dark glass bottles, avoid sunlight and sources of electromagnetic field (TV, radio, fridge)". These requirements are pointless in case of colloid silver products, they are relevant only to ionic silver solutions:
  • Colloidal silver containing silver nanoparticles does not require to be stored in glass, it does not interact with plastic surface and thus can be delivered in transparent PET bottles enabling visual colour check.
  • Ionic silver, which is wrongly declared as colloidal by many producers, is photosensitive and interacts with plastic surface, therefore many companies use non-transparent glass bottles, that moreover do not allow to check the product colour.
  • Electromagnetic field influences ionic silver, it has no negative effect on colloidal silver by our experience.
  • Cooling of the colloid silver slowers agglomeration of particles and prolongs the shelflife of the product by our experience, please avoid freezing of the product.

Colourless products usually contain no nanoparticles or just a fraction of declared quantity - such products usually contain ionic silver which is photosensitive (therefore stored in non-transparent bottles).   

Try the test with kitchen salt or contact us if you are not sure about the quality of your product!

Distribution and Storage
Distribution and Storage
Colloidal silver is distributed in form of stable dispersion in PET bottles (100, 250 or 500 ml) or plastic canisters. Storage in a refrigerator at 2-6 °C is highly recommended. Do not freeze or heat the product! Process within 6 months from the date of manufacture.