At present, there are many products called fulvic acid containing potassium fulvic acid or potassium humate on the market. A lot of friends asked me, if there is no very good test conditions, how to know if his product really contains fulvic acid? In fact, as long as we understand the characteristics of fulvic acid, we can simply identify whether the product contains fulvic acid or not. This kind of character is known as qualitative in chemistry. Of course, quantitative will require rigorous testing to know.
Mineral source fulvic acid is the least molecular weight component in humic acid products, which can dissolve in both acid and alkali. Other acids like black humic acid and brown humic acid are insoluble in acid , and we can use this feature to simply identify whether the humic acid product you buy contains fulvic acid.
Methods: 0.1 g product was dissolved into 1000ml water (tap water and purified water), diluted 10000 times, add a small amount of sulfuric acid (or hydrochloric acid or nitric acid) to PH about 2-3, stationary for 10 minutes, then filter the solution, observe the filtrate color and filter paper residue. The darker the color, the higher the content of fulvic acid, and correspondingly, the more residue of the fiter paper , the lower the content of fulvic acid.
The above is how to identify whether potassium fulvic acid contains fulvic acid. Let us truly know humic acid, indentify between true and false, and come true the value of the product.