Natures Tears® EyeMist® - Tissue-Culture Grade of Water

Tissue-Culture Grade

What is Tissue-Culture Grade of Water?

By Julia Oxford, Ph.D.

Tissue-culture grade of water is high-grade water with no impurities or contaminants. To be considered tissue-culture grade, water is tested for its ability to support cell growth and maintenance in the laboratory when used to reconstitute cell growth medium. The pH of tissue-culture grade water should be slightly acidic, between 5.7 and 7.0. Inorganic minerals, essential for cell growth, must be presenting minute quantities. Organic matter is absent, including natural and man-made organic molecules such as proteins, pesticides, herbicides, tannins and detergents. Microorganisms such as bacteria, viruses and algae are absent, as are organic breakdown products. The water is of low toxicity and endotoxin free.

Bio-Logic Aqua Absolute Premium Standard™ tissue-culture grade of water, the ingredient in all Bio-Logic Aqua Technologies products, meets or surpasses the above criteria and has a natural pH of 6.4.

If you have any questions about tissue-culture grade water or Dr. Oxford's studies, please contact the company.