Instructions for Use of Liquid Paraffin in Aged Rice Quick Test Kit

Product Number: YP-09

First, Method Principle

The surface color of aged rice is dull. After adding paraffin wax for mixed treatment, the surface can be crystal clear and translucent, thus posing as new rice for sale. According to the physical and chemical properties such as the melting point and solubility of paraffin, the physical heating method is used to determine whether paraffin is added to rice for qualitative detection.

Second, Scope of Application

This kit is suitable for rapid qualitative detection of paraffin added to rice.

III. Product specification

50 times/box

IV. Sample determination

Take rice to half the volume of the sample cup, add 3 drops of reagent A dropwise, and then add hot water above 70 ° C to submerge the rice until the sample cup is nearly full. Gently stir with a plastic spoon for about 1 minute and let stand. After the temperature of the solution in the sample cup drops below 50 ° C, observe whether there are oil droplets on the liquid surface and on the edge. If so, it is judged that paraffin is added to the sample. If there are no oil droplets, no paraffin is added to the sample.

V. Precautions

This method is a rapid qualitative detection method on site. For suspicious samples, it should be sent to the laboratory for further confirmation using standard methods.

VI. Detection limit

The detection limit of paraffin in rice in this kit is: 0.2%.

Seven, storage conditions and product valid period

1, storage conditions: room temperature and dark storage;

2, product valid period: 12 months.

Eight, kit composition

serial number

specifications

composition

10 times/box

50 times/box

100 times/box

1

reagent A

1 bottles

1 bottles

1 bottles

2

sample cup

10

50

100

3

stirring rod

1

1

1

4

manual

1

1

1

1 parts