Y-Mineral oil of edible oil test reagent

Product introduction

Application

This method is applicable for rapid detection of the oil pollution, mixed with mineral oil.

Method and principle

Glycerides as edible oil fatty acid, can occur hydrolysis reaction under alkaline conditions (i.e. the saponification reaction), its products are easy to dissolve in water. And mineral oil cannot be saponification, also do not dissolve in water, it can appear turbid phenomenon, hereby certify the mineral oil in the presence or itself is mineral oil.

Testing material

Mineral oil detection reagent, anhydrous ethanol (self-service), colorimetric tube, distilled water and hot water.

Method of operation

Take 2 drops of oil sample into the colorimetric tube, and add 5 mineral oil detection reagent, and add ethanol to the 5mL, do not cover the tube, heat it at 80¡æ to 100¡æ water (or poured the boiling water into the beaker, put the colorimetric tube into water) for 10 minutes, during the heating process at any time to gently shaking, when taken out the ethanol volume do not less than 4mL, and then add 5mL distilled water or purified water.

Results judgment

If the colorimetric tube solutions muddy that is positive, the turbidity will increase with mineral oil concentration. If the oil mixed with greater hardness water, then can also occur opacities, keep long to produce precipitation. The mixed with mineral oil for a long time on precipitation transparent oil will be floating on a liquid surface.

Announcement

In the operation must be done a gas sample blank test, if the blank test tube also appear cloudy, that means the ethanol has a problem, need to change the anhydrous ethanol.

The detection positive samples should be sent to the laboratory for further confirmation.

Reagent quality control

Reagent on mineral oil minimum detectable amount is 0.1%.

Reagent should be stored in normal temperature and avoided form sunlight. The period of validity is one year. 

In order for the machine oil, kerosene and sunflower oil.