Support HACCP! Digital Frying Oil Monitor
From test paper to digital display
Quantify the oxidation of oil
For cost control due to soaring oil prices!
With communication function, no on-site recordeing required!

Regularly consumed cooking oils come in a variety of types, including olive oils, vegetable oils, corn oils, perilla oils, cottonseed oils, and safflower oils.
Use Quality standards and indicators to deliver delicious and safe products to consumers.
Consistently stable production, sensible quality assurance, and maintaining the best standards and procedures are vital.

Identifying Oxidized Cooking Oil

Types of oxidation

Determining oil oxidation at home can be done by color or smell, but in professional kitchens and production sites, the methods below are used.

酸化の分類
酸化の分類

①Total Polar Materials
(TPM)

A method used to determine the degradation of frying oil. Total Polar Materials (TPM) refers to all products present in frying oil due to oxidation processes, including free fatty acids, products of low molecular weight decomposition, and polymerized substances. The EU has adopted a value of 25 to 27% as their acceptable upper limit for fats and oils.

②Acid Value
(AV)

Acid Value or AV is an index that denotes the amount of free fatty acids caused by hydrolysis. Acid value is a suitable method for evaluating the degree of oxidation for frying oils. Many AV test strips, which can be easily measure the value, are used at food production sites.

③Carbonyl Value
(CV)

It is a measurement denoting the amount of aldehyde and ketone produced in frying oils to determine degradation. Carbonyl compounds can be a good indicator of thermal oxidation. In addition, as the threshold is small, it will impact the smell of fats and oils greatly.

④Peroxide Value
(POV)

Peroxide is generated when oil is exposed to air, causing the unsaturated fatty acids to absorb oxygen. Peroxide value can also be used to measure hydroperoxide but for frying oil the indicator is by decomposition or polymerization.

Oil Quality Standards

Determining oil oxidation at home can be done by color or smell, but in professional kitchens and production sites, the methods below are used.

Instant noodles The acid value of fats and oils contained in noodles should not exceed 3 or the peroxide value should not exceed 30. Standards for Foods, Food Additives
In fats and oils of noodles dried by oil treatment should be 1.5 or less.
The acid value of fats and oils used for oil processing of noodles should be 1.5 or less.
Japanese Agricultural Standard
Confectionery processed with fats and oils
(containing 10% or more of fats and oils)
Selling products that conform to the following (a) and (b).
(a) For confectionery products, the acid value of fats and oils contained in their products should not exceed 3, and, the peroxide value should not exceed 30.
(b) The confectionery should not exceed an acid value of 5 or more in the fats and oils contained in the product or, the peroxide value should not exceed 50.
Confectionery Guidelines
Bento box and side dish As raw materials: Use those with an acid value of 1 or less (but excluding sesame oil) and a peroxide value of 10 or less.
Frying with fats and oils: If the acid value exceeds 2.5, replace with fresh fats and oils.
Health Code for Lunch Box and Side Dish
Western-style confectionery (1) Component specification of raw materials: acid value 3 or less, peroxide value 30 or less
(2) Products shall conform to the following standards
①The acid value of fats and oils contained in the product does not exceed 3.
②The peroxide value of fats and oils contained in the product does not exceed 30.
Healthy Norms of European-style Confectionery
Edible vegetable oils and fats Oil with low degree of purification Acid value of 0.20 to 4.0 or less. (Cottonseed, sesame, rapeseed, peanut, olive, palm olein, palm stearin, mixture, flavor oil) Japanese Agricultural Standard
Refined oil Acid value of 0.20 or less (Olive oil has an acid value of 0.60 or less)
Salad oil Having an acid value of 0.15 or less (the one prepared with olive oil has an acid value of 0.40 or less)

Determining Oxidation

DOM-24 vs Test Strip vs Titration

DOM-24
The DOM-24 detects the electrical capacity and temperature with a sensor and computes the TPM as a correlation of both. It can also calculate the AV of both using the correlation between them and the TPM.
Test Strip
Determines AV value using the color change of test strips, coated in a reagent, immersed in sample. Commonly sold and used as AV oil detection test strips that can be easily used at production facilities. These strips are a common method of testing oxidization of frying oils in Japan.
Titration
In addition to titration using a starch indicator (the acetic acid-isooctane method), standard oil/fat testing methods include the iodine titration technique, which uses the principle of iodine being released from potassium iodide, and the Potentiometric titration method.
DOM-24 Test Strip Titration
Ease of measurement
No reagent, no waste
Simple operation
Waste disposal is required
It takes time and effort to prepare and clean up
Measurement time
Measurement time is approximately 30 seconds
It takes about 1 to 4 minutes
Measurement is time consuming and requires knowledge and experience
Display
Anyone can read the digital display
Individual difference, subjective judgements
Difficult to read measurements

Frying Oil Monitor

DOM-24

Identifies the Best Time to Replace Oil

・Allows you to safely cook delicious fried foods
・Lowers oil usage and reduces waste
・Lower costs by using oil right up until it needs to be replaced

tpmとav値の表示
dom-24製品画像

Specifications

Cat.No. 9341(DOM-24)
9347(DOM-24 X3)
Measurement range TPM : 0.5 to 40.0%
AV : 0.00 to 9.99
Temperature (˚C) : 0 to 225˚C
Temperature (˚F) : 32 to 437˚F
Resolution TPM : 0.5%
AV : 0.01
Temperature : 1˚C⁄1˚F
Measurement accuracy Approx. ±0.2(Varies with user’s scale setting.)
TPM : ±2.0%
Temperature : ±1˚C / ±2°F
(20 to 200˚C / 68 to 392°F)
Temperature compensation range 0 to 225˚C (accuracy guaranteed from 20 to 200˚C)
32 to 437°F (accuracy guaranteed from 68 to 392°F)
Power supply Size AAA alkaline battery × 2
International protection class IP67
Dimension and weight 22(ø)×490(w)mm, 400g(Main unit only)
世界初 酸価(AV)をデジタル表示
世界初 酸価(AV)をデジタル表示

Stable and reliable measurement values
The DOM-24 is equipped with automatic temperature compensation (ATC), making it capable of measurements at a wide temperature range of 0 to 225˚C. The DOM-24 can provide stable and reliable measurement values, even at high-temperatures.

測定値表

Avoiding burn injuries

To improve the safety of employees and contribute to the reduction in the risk of burns.

油から手までの距離を確保

Rated IP67 (Water resistant)
Designed to be used safely around water. Wash away stubborn oil stains with regular dish soap under running water. Instrument will survive accidentally being dropped in water.

防水等級IP67を実現

Easy confirmation with LED

エラー表示

Can be used to stir the oil

Due to oil having layers, temperature and degradation levels may not be uniform throughout. Stirring the oil with the product can produce more consistent results.

油をかき混ぜることが可能

Sturdy construction with a protective cover

保護カバー・センサー

Impact-resistant body

Confirmed to continue working even if dropped accidentally from waist height so you can relax and let all of your employees use it without worry.

Measuring method

Ready to read the moment it is immersed in frying oil.
  • 電源ON 電源ON

    Power ON

    Press and hold the START button for approximately 1 second.

  • 目盛り選択 目盛り選択

    Scale Selection


  • 測定開始 測定開始

    Start testing

    Press the START button. The instrument will begin taking measurements. Insert the sensor into the oil, and stir the oil.

  • 測定値表示 測定値表示

    Measured value display

    Measurement results (temperature and TPM) will be displayed once stability is reached (within approx. 30 sec).

Function and design

各部名称
各部名称

Why Choose ATAGO?

Support HACCP!

Atago has a communication function.There is no need to record each measurement.

Excellent operability

Excellent operability with the touch of a button.It has a reputation for being easy to use even in the field.

Made in JAPAN

Our products are made entirely in Japan with high quality.