Evaluation of compound fertilizers
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Hey everyone. . In addition to the requirements specified by national standards for compound fertilizers, such as a high concentration of 16–16–16; total nutrients exceeding 48 with a tolerance of +2.0; moisture content below 2.0; the percentage of water-soluble phosphorus relative to total available phosphorus being at least 60; and particle size being above 90, there are also requirements regarding individual nutrients, with levels ranging from 14.5 to 16. But what is the allowable tolerance range for these nutrients across different companies?
The total nutrient deviation of our company is no more than 1%, and the deviation for individual nutrients is no more than 1.5%.
Is that how you conduct evaluations? We request that single-breeding be established as an internal control standard for the enterprise. . For example, is 16% off equivalent to 14.5, with a maximum limit of 17.5? Is there no lower limit required?
The total nutrient content must not show a negative deviation; for individual nutrients, a deviation of ±1.5% is allowed
As long as the total nutrients are sufficient, and each individual nutrient is at a sufficient level, the net weight will be appropriate
The total nutrient content must not show a negative deviation, while individual nutrients may vary by up to 1.5% positive or negative
There should be no negative deviation in total nutrients; the negative deviation for individual nutrients shall not exceed 1.5%, while there is no requirement for positive deviations.
Of course, the evaluation is based on meeting **the standards**, with the principle that lower costs are better
For both total nutrients and individual nutrients, the required levels are equal to or higher; the company’s internal standard is 1.5% for total nutrients and 1% for individual nutrients, with fines imposed in case of exceeding these limits.
The total nutrient content must not have a negative deviation; the negative deviation for individual nutrients shall not exceed 1.5%. There is no requirement regarding positive deviations, just as in our company
We follow national standards, allowing only a 1% positive deviation for total nutrients