Multiply the percentage of potash found to be present by the factor 0.05 and to this product add an allowance of 0.5 percent.
Example: 12-4-8 (LC) for potatoes
Percentage of potash found present: 8.42%
8.42% 0.05 = 0.4210%
Allowance: + 0.5000% = 0.9210% maximum permitted
N.J. Admin. Code § 2:69-1.13
See: 3 N.J.R. 36(a), 3 N.J.R. 55(b).