In these regulations Act means the Fertilizers Act 1993 ;animal material includes blood, bone, fish, animal flesh and feather meal;lime means a substance which contains calcium carbonate, magnesium carbonate, calcium oxide or magnesium oxide and which is used (a) to increase the pH of soil; or(b) as a soil conditioner; or(c) as a fertilizer;neutralizing value means the value equivalent to the amount of acid neutralized by an amount of fertilizer expressed as a percentage of the amount of acid neutralized by an equal amount of calcium carbonate;tolerance means the amount, expressed as a percentage, by which a characteristic of a fertilizer set out in Schedule 3 may vary from the value of that characteristic stated on the label, invoice or delivery docket.