Oil Quality Test Strips – Acid Value (AV) 0–5.0 mg/g, 100 Strips

Oil Quality Test Strips – Acid Value (AV) 0–5.0 mg/g

These oil quality test strips give a quick, semi-quantitative reading of the acid value (AV) of oil. The test pad on the strip changes colour through a chromogenic reaction, and the result is read by comparing it with the colour chart printed on the bottle, which is graduated at 0 – 0.3 – 0.5 – 1.5 – 2.5 – 3.0 – 5.0 mg/g (KOH) and marked with IDEAL, CAUTION and BAD zones.

The acid value measures the free acid content of an oil, expressed as the amount of potassium hydroxide (KOH) needed to neutralise the acid in one gram of oil, and it is an indicator of the freshness of the oil. The supplier's sheet states that, according to general international standards, the acid value of fine refined oils is less than 0.2 mg KOH/gram. The acid value of fresh oil tends to zero; it rises after repeated use, long contact with air after opening or over-long storage, and the oil is considered deteriorated when the acid value exceeds 2.0.

The strips are intended for food and oil quality testing, for example checking cooking oil in food factories and restaurants. Each bottle contains 100 strips. For reliable results, do not put wet fingers into the bottle, do not touch or contaminate the test pad with your hands, tighten the cap each time after removing a strip, compare the strip colours in good light, and keep the bottle cool and dry, stored away from light.

Key Features

• Test factor: acid value (AV) of oil, in mg/g (KOH).
• Seven colour steps: 0 – 0.3 – 0.5 – 1.5 – 2.5 – 3.0 – 5.0 mg/g.
• Visual colour comparison against the chart on the bottle – no instrument needed.
• Simple procedure: immerse the strip in cold oil for 2 seconds, hold it horizontally for 120 seconds, then compare with the colour chart and read immediately.
• 100 strips per bottle, one test pad per strip.
• Shelf life: 2 years from production when unopened; after opening it is better to use the strips within 90 days.

Package Contents

• 1 bottle of 100 test strips with the colour chart on the bottle label.