| Symbol | Name of Criterion | Description |
| C1 | Drying Time | The time required to dry the maize to safe moisture content. |
| C2 | Capacity | This is defined as the quantity of grains to be dried. At the same depth or thickness, can the quantity of the grains be increased based on the method without affecting the drying rate. |
| C3 | Ease of Use | This defines the ease to set-up the dryer and stocking it as well as mixing the drying products to attain uniform drying. |
| C4 | Cost | This defines the cost of the drying methods. |
| C5 | Rewetting | Is there any chance for reabsorption of moisture into the drying product in case of bad weather condition or during the night? |
| C6 | Versatility | Can the drying method support drying of different product with ease at the same time? |