§ 14643 Substance Component Analysis Rules
This law says that whenever you need to figure out what percent of a substance is made up of each ingredient, you must use the testing method that the secretary decides on.
A company wants to put a label on a cleaning spray that says it is 30% ethanol.
The company has to test the spray using the secretary‑approved method to make sure the ethanol really makes up 30% of the whole mixture before they can label it that way.
Percentage of component = (Amount of component ÷ Total amount of substance) × 100
A bottle contains 15 grams of fragrance oil in a total of 50 grams of perfume.
Result: Percentage = (15 ÷ 50) × 100 = 0.30 × 100 = 30% of the perfume is fragrance oil.
AI-generated — May contain errors. Not legal advice. Always verify source.
§ 14643 Substance Component Analysis Rules
Last verified: January 10, 2026