Size Grade Number Scale

1. 
   N97280-UN-26APR12

   A - Compartment

   Place scale on flat surface so lid slides right.

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2. Open lid and fill far right compartment (A) with selected product until full.

3. 
   N97281-UN-26APR12

   A - Lid

   Close lid (A) completely.

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4. 
   N97282-UN-13APR12

   A - Filled Compartment

   Rotate scale so compartment with sample (A) is on top.

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5. Shake scale up and down until material finishes dispersing, usually less than two minutes.

6. Turn scale to starting position.

7. 
   N97283-UN-13APR12

   A - 100 Percent Marking

   B - 280 Mesh Marking

   C - 400 Mesh Marking

   View level of material in each compartment and determine SGN level based on markings.

   For example, 100 percent of the sample (A) shown is between 280 (B) and 400 (C). Thus, SGN is approximately 340.

   A hardness of 2.5  and an SGN of 340 for Urea and 680 spinner speed will broadcast up to 90’

   A hardness of 2.5  and an SGN of 240 for Urea and 680 spinner speed will broadcast up to 80’

   A hardness of 3.5  and an SGN of 340 for Potash or Diammonium Phosphate and 680 spinner speed will broadcast up to 70’

   NOTE: Values listed are to be used as a guide only. Spread pattern results are affected by physical properties such as bulk density, material density, particle size, particle shape, hardness, coefficient of friction, etc. Testing must be performed to verify spread pattern for each material.

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