The standard applies to the examination of vegetable and animal oils and fats, and technical fatty acids. Notes 1. The phosphorus content of lecithin cannot be determined using this method. An ashing procedure at 800 °C must be followed for this 2. If the sample has a very low lecithin content, this can be determined as dis earyllecithin using this method by multiplying the phosphorus content calculated in accordance with Chapter 8 by 25.5. When determining lecithin in soy oil, the factor mentioned is 30 instead of 25.5.
NEN 6349-1991 history
1991NEN 6349-1991 Vegetable and animal oils and fats - Determination of phosphorus content Spectrometric method