How to seprate Sodium Humate and Potassium Humate

Do you know how to distinguish SODIUM HUMATE AND POTASSIUM HUMATE?

Here are several ways to differentiate them:

1) Observe the color

Potassium humate is not total black,usually brownish-black, with a slight luster.

Sodium humate is mostly black powder without luster and with stronger hygroscopicity. Nowadays, there are also some shiny sodium humate flakes on the market. In such cases, you can dissolve them in water and observe the color of the liquid.

The aqueous solution of potassium humate liquid appears light brown, while that of sodium humate liquid is dark black.

2) Flame test

Take a small amount of the sample and place it on a platinum wire loop.

Based on the characteristics of metal ions.

the flame of potassium humate will show a pale purple color,

while that of sodium humate will be bright yellow.

Sodium humate is cheaper, but long-term use of it can lead to soil salinization. It's not worth it!