Edible oil acid value rapid test strip instruction manual

Product number: YC162Y01H

1 Introduction

Acid value refers to the content of free fatty acids in vegetable oil, expressed in milligrams (mg/g) per gram of oil and potassium hydroxide

. The acid value of the test can reflect whether the oil is rancid and the degree of rancidity. If the consumption of rancid oil can cause poisoning symptoms.

GB2716-2018 "National Food Safety Standard, Vegetable Oil" stipulates: Edible vegetable oil acid value 3.0mg/g.

2 Detection principle

The free fatty acid produced by edible oil reacts with the detection reagent to generate colored compounds. The color depth is related to the degree of rancidity of edible oil samples. Control the color card and read out the content.

3 Detection range

Various edible oils in liquid state at room temperature.

4 Technical indicators

Detection limit: 0.3mg/g,

5 Sample measurement

1, the oil sample was taken with a clean and dry container about 5ml, and the oil sample temperature was adjusted to 255 ℃ and then tested;

2, the test paper is immersed in the oil sample and start timing, the test paper is immersed in the oil sample 1-2 seconds after removal, the excess oil sample is sucked off with absorbent paper from the side of the test paper, the test section of the test paper is placed flat side up;

3, when the timing reaches the colorimetric time calibrated by the colorimetric table, the color of the test paper is compared with the color block on the colorimetric table, and the detection result is determined that the value under the color block of the same color or similar color is the detection value of the sample, such as the color of the test paper between the two color blocks, the middle value of the two is taken.

6 Precautions

6 Pay attention to re-sealing the test strip after use, and pay attention to maintaining a dry environment.

6.2 Do not directly contact the test strip test part with your hands.

6.3 This product is only used for initial screening, and the final results are subject to relevant national standards and methods.

7 Storage conditions and valid period

Reagents are stored in a cool and dry place at 4-30 ° C, protected from light, and the valid period is 18 months.

8 Kit composition

Serial number

Specifications

Composition

10 times/box

50 times/box

100 times/box

1

test paper

10

50

100

2

sample cup

10

50

100

3

manual 11727