Brief introduction
 
Edible oil is one of the indispensable foods in people's daily life, The quality of edible oil not only affects the flavor of food, but also seriously affects the health of human body. The rancid edible oil will cause damage to human liver. The peroxide in rancid edible oil is a carcinogen, which is easy to cause cancer. However, its damage to human body is a chronic process, which is often not easy to attract people's attention. Long-term consumption of inferior edible oil will cause serious harm to the body. Acid value and peroxide value are commonly used physical and chemical indexes to evaluate whether edible oil meets national hygiene standards.
 
Scope of application
 
It is suitable for rapid detection of acid value and peroxide value in liquid edible oil at normal temperature.
 
Composition of kit
 
Test paper for rapid detection of acid value of edible oil
 
Test paper for rapid detection of peroxide value of edible oil
 
Instructions
 
Detection range
 
Acid value: 0 ~ 5.0 (KOH) mg/g; Peroxide value: 0 ~ 0.60 g/100g
 
Operating steps
 
1. Take a small amount of edible oil samples in a clean and dry container, and adjust the temperature of edible oil samples to 20 ~ 30 ℃ for testing.
 
2. Immerse the reaction film of the test paper into the oil sample for about 5 seconds, and then take it out and lay one side of the reaction film upward.
 
3. Let the acid value test paper stand for 5 minutes and the peroxide value test paper stand for 10 minutes.
 
4. Absorb the excess oil sample from the side of the test paper with absorbent paper.
 
5. Compare with the color scale card on the test paper tube (if the color of the test paper is between two color blocks, take the middle value of the two) to determine the detection result.
 
Result judgment:
 
The national standard GB2716 stipulates that the acid value (KOHmg/g) of edible vegetable oil is ≤ 3; The peroxide value (g/100g) is less than or equal to 0.25.
 
Matters needing attention
 
1. Please use it up within one month after opening. If the aluminum foil bag is damaged, the sealing is not good or the reaction film is discolored before opening, it cannot be used again.
 
2. Please observe the results within the specified time, otherwise the judgment of the results will be inaccurate.
 
Storage conditions
 
Test strips should be stored in shade, seal, cool and dry at 4 ~ 25oC.