ISO 21493:2019 pdf download – Petroleum products – Determination of turbidity point and aniline point equivalent. 9 Procedure ‘9.1 Clean and dry the apparatus. ‘9.2 Pipette 10 ml± 0,02 ml of p-anisaldehyde and 10 ml± 0,02 ml of the sample into the test tube. lf the material is too viscous for pipetting, weigh to the nearest 0,01 g, a quantity of the sample corresponding to 10 ml at room temperature. ‘9.3 Prepare the apparatus in accordance with the manufacturer ’ s instructions. Use the expected temperature for the sample as guidance for setting up the apparatus. If the sample is...