How to Identify Liquid Fertilizers
- 1). Look for the measurement of the fertilizer on the label. If the fertilizer's measurement is given in volume weight, the fertilizer is liquid. This weight is usually represented in grams per cubic centimeters of fertilizer solution, or gr/cm3.
- 2). Examine the fertilizer's color. Solid fertilizers are typically white, off-white or light beige. Liquid fertilizers are usually colorless or take on the color of the substance that they are prepared in. For example, liquid fertilizers that are prepared with phosphoric acid may be yellow or brown. A liquid fertilizer may also be cloudy or hazy based on the types of nutrients in it.
- 3). Look for a warning label that indicates if the liquid fertilizer is corrosive. Liquid fertilizers with a pH below 6 are highly corrosive.
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