Atago Alcohol Liquid Refractometers
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Atago Alcohol Liquid Special Scale PAL Series Refractometers
are specialized refractometers designed for accurately measuring the alcohol content in liquid samples, particularly in beverages like wine, spirits, and beer. These devices are part of Atago’s PAL Series, which is known for offering portable, user-friendly, and highly precise refractometers for various industrial and laboratory applications.
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Pocket Refractometer
PAL™Series

Technical Specifications
Model | PAL-33S | PAL-34S | PAL-36S | PAL-37S | PAL-131S | PAL-85S |
---|---|---|---|---|---|---|
Cat No | 4433 | 4434 | 4436 | 4437 | 4530 | 4485 |
This model is suitable for measuring the concentration of ethyl alcohol water solution(ml/100ml) | This model is suitable for measuring the concentration of ethylalcohol water solution(g/100g) | This model is suitable for measuring the concentration of methyl alcohol water solution(g/100g) |
This is for measuring the concentration of Isopropyl alcohol water solution by g/100g. |
This is for measuring the concentration of Isopropyl alcohol water solution by ml/100ml. |
This is for measuring the concentration of Polyvinvyl alcohol water solution by g/100g. |
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Scale | Ethyl Alcohol (mL/100mL) Temperature |
Ethyl Alcohol (g/100g) Temperature |
Methyl Alcohol (g/100g) Temperature |
Isopropyl Alcohol (g/100g) Temperature |
Isopropyl Alcohol (mL/100mL) |
Polyvinyl Alcohol (g/100g) |
Measurement Range | Ethyl Alcohol : 0.0 to 53.0% Temperature : 5.0 to 30.0゚C |
Ethyl Alcohol : 0.0 to 45.0% Temperature : 10.0 to 35.0゚C |
Methyl Alcohol : 0 to 35% Temperature : 10.0 to 35.0゚C |
Isopropyl Alcohol : 0.0 to 60.0% Temperature : 10.0 to 35.0゚C |
Isopropyl Alcohol 0.0 to 20.0% Temperature 10℃ to 35゚C |
Polyvinyl Alcohol 0.0 to 20.0% Temperature 10℃ to 35゚C |
Resolution | Ethyl alcohol : 0.5% Temperature : 0.1゚C |
Ethyl Alcohol : 0.5% Temperature : 0.1゚C |
Methyl Alcohol : 1% Temperature : 0.1゚C |
Isopropyl Alcohol : 0.2% Temperature : 0.1゚C |
Isopropyl Alcohol : 0.1% Temperature : 0.1゚C |
Polyvinyl Alcohol : 0.1% Temperature : 0.1゚C |
Measurement Accuracy | Ethyl Alcohol : ±1.0% Temperature : ±1゚C |
Ethyl Alcohol : ±1.0% Temperature : ±1゚C |
Methyl Alcohol : ±2% Temperature : ±1゚C |
Isopropyl Alcohol : ±0.6% (0 to 30%) to ±1.6%(60%) Temperature : ±1゚C |
Isopropyl Alcohol : ±0.6% (0 to 30%) to ±1.6%(60%) Temperature : ±1゚C |
Polyvinyl Alcohol : ±2% Temperature : ±1゚C |
Temperature compensation range | 5℃ to 30゚C (Automatic Temperature Compensation) |
10℃ to 35゚C (Automatic Temperature Compensation) |
10℃ to 35゚C (Automatic Temperature Compensation) |
10℃ to 35゚C (Automatic Temperature Compensation) |
10℃ to 35゚C (Automatic Temperature Compensation) |
10℃ to 35゚C (Automatic Temperature Compensation) |
Ambient Temperature | 10℃ to 30℃ | 10℃ to 35゚C | 10℃ to 35゚C | 10℃ to 35゚C | 10℃ to 35゚C | 10℃ to 35゚C |
Sample Volume | 0.3 mL | 0.3 mL | 0.3 mL | 0.3 mL | 0.3 mL | 0.3 mL |
Measurement Time | 3 seconds | 3 seconds | 3 seconds | 3 seconds | 3 seconds | 3 seconds |
Power Supply | 2 x AAA Batteries | 2 x AAA Batteries | 2 x AAA Batteries | 2 x AAA Batteries | 2 x AAA Batteries | 2 x AAA Batteries |
Battery Life | Approx. 11,000 times measurement (when alkaline batteries are used) |
Approx. 11,000 times measurement (when alkaline batteries are used) |
Approx. 11,000 times measurement (when alkaline batteries are used) |
Approx. 11,000 times measurement (when alkaline batteries are used) |
Approx. 11,000 times measurement (when alkaline batteries are used) |
Approx. 11,000 times measurement (when alkaline batteries are used) |
International Protection Class | IP65 Dust-tight and Protected against water jets. | IP65 Dust-tight and Protected against water jets. | IP65 Dust-tight and Protected against water jets. | IP65 Dust-tight and Protected against water jets. | IP65 Dust-tight and Protected against water jets. | IP65 Dust-tight and Protected against water jets. |
Dimensions & Weight | 55(W) x 31(D) x 109(H)mm, 100g (Main Unit only) | 55(W) x 31(D) x 109(H)mm, 100g (Main Unit only) | 55(W) x 31(D) x 109(H)mm, 100g (Main Unit only) | 55(W) x 31(D) x 109(H)mm, 100g (Main Unit only) | 55(W) x 31(D) x 109(H)mm, 100g (Main Unit only) | 55(W) x 31(D) x 109(H)mm, 100g (Main Unit only) |
Ethyl alcohol, also known as ethanol, is a type of alcohol that is commonly used in a variety of applications. Here are some key points about ethyl alcohol:
It's important to note that while ethanol has various uses, excessive consumption can be harmful. Ethanol is also subject to regulations and legal restrictions in many places. If you have a specific question or if there's something specific you'd like to know about ethyl alcohol, please provide more details. |
Ethyl alcohol, also known as ethanol, is a type of alcohol that is commonly used in a variety of applications. Here are some key points about ethyl alcohol:
It's important to note that while ethanol has various uses, excessive consumption can be harmful. Ethanol is also subject to regulations and legal restrictions in many places. If you have a specific question or if there's something specific you'd like to know about ethyl alcohol, please provide more details. |
Methyl alcohol, also known as methanol, is a type of alcohol with the chemical formula CH₃OH. It is the simplest alcohol, consisting of a methyl group (CH₃) linked to a hydroxyl group (OH). Methanol is a colorless, volatile liquid with a slightly sweet odor. Here are some key points about methyl alcohol:
It's important to handle methanol with care due to its toxicity. In industrial and laboratory settings, proper safety measures should be observed, including the use of personal protective equipment and adequate ventilation. The use of methanol in consumer products is regulated to ensure safety. |
Isopropyl alcohol, also known as isopropanol, is a common and widely used alcohol with the chemical formula C₃H₈O. It is a colorless, flammable liquid with a strong odor. Isopropyl alcohol has a variety of applications, including in industry, medicine, and household settings. Here are some key points about isopropyl alcohol:
It's important to use isopropyl alcohol in accordance with recommended guidelines and safety precautions. For specific applications, such as medical use or electronic cleaning, it's advisable to follow the instructions provided by relevant authorities or manufacturers. |
Isopropyl alcohol, also known as isopropanol, is a common and widely used alcohol with the chemical formula C₃H₈O. It is a colorless, flammable liquid with a strong odor. Isopropyl alcohol has a variety of applications, including in industry, medicine, and household settings. Here are some key points about isopropyl alcohol:
It's important to use isopropyl alcohol in accordance with recommended guidelines and safety precautions. For specific applications, such as medical use or electronic cleaning, it's advisable to follow the instructions provided by relevant authorities or manufacturers. |
Polyvinyl alcohol (PVA) is a synthetic polymer that is water-soluble. It is made through the polymerization of vinyl acetate, followed by hydrolysis to remove the acetate groups. Polyvinyl alcohol is used in a variety of applications due to its unique combination of properties, including its ability to dissolve in water and form a clear, colorless, and flexible film. Here are some key points about polyvinyl alcohol:
Polyvinyl alcohol is a versatile polymer with applications in diverse industries due to its water-solubility, film-forming ability, and adhesive properties. The specific properties of PVA can be tailored by adjusting its molecular weight, degree of hydrolysis, and other parameters during its production. |
PAL Commitment
A new ergonomic design for comfort and ease of use! In pursuit of an "easy to use" , "easy to operate" and ergonomic architecture of new instruments, ATAGO has achieved a "palm fitting" masterpiece as well as unit that is high in hygienic properties. By reducing the number of unnecessary assembly parts, we have reduced the risks of a germ reproductive environment. Through our efforts to produce a hygienic instrument to be used in any industry, these units are designed to be completely washable. The new PAL series has been approved by the HACCP, and are equipped with the new ELI feature, which ensures accurate measurements - even outdoors. Requests from our customers worldwide are reflected in the development of the new PAL units
ATAGO Releases NFC (Near Field Communication) Equipped Refractometers
In addition to the Bluetooth enabled refractometers, ATAGO ® released refractometers with near-field communication (NFC) technology for the ease of storing and sharing data with phones, tablets, laptops, and other NFC-equipped devices. Simply by tapping NFC-equipped devices, up to 100 measurement data with the date and time are transferred in a matter of seconds. The NFC solution is simpler and prevents typical human errors in data collection and data generation.
With ever evolving movement of profound change in how human interact with machine automation, this upgrade seizes one’s time to write down measurements with a pen or paper.
How to Use NFC Feature on PAL:
Quick and easy three steps
- For cellphones, download NFC reader app or turn on the NFC feature. For computers, connect the NFC reader.
- Place NFC reader to the PAL device.
- Download data
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Measurement Methods In 3 Easy Steps

Other Features
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Light & Compact, 100g. Ergonomically designed for one-handed operation. The innovative design makes it easy to pour out and remove a sample, but difficult to spill the sample | ![]() |
Sample size 2-3 drops. |
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The speedy performance of the PAL is amazing. Simply put a drop of a sample on the prism surface and press the START key. The Brix value ( sugar content/concentration) will be displayed in just 3 seconds. | ![]() |
High-temperature samples can be measured. |
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The protection class of the PAL is IP65. You can rinse off the sample by running water on the sample stage. The design allows the user to easily wipe off the sample. Will float if accidentally dropped in water | ![]() |
Revolutionary new External Light interference (ELI) feature Patented When intense light penetrates the prism of a digital refractometer, the light waves interfere with the sensor, which may lead to inaccurate measurements. To ensure accurate measurement results, the PAL is programmed with the ELI function which displays the [nnn] warning message when intense direct light is detected. Forming a habit of shading the sample stage with your hand and re-pressing the START key (when the warning message from the ELI function is displayed) will ensure accurate measurement results each time |
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The sample stage is designed to keep sample solutions from spilling out. | ![]() |
Calibration with water only. |
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The Automatic Temperature Compensation function of the PAL enables you to take measurement readings regardless of the ambient temperature. | ![]() |
Convenient Storage case. |
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New Digital Hand-Held "Pocket" Meter for PAL-Series Equipped with NFC Data Transmission Function Data history can be accessed by bringing PAL-NFC to any Android devices or PC-linked USB NFC Reader. *The Certification Mark is a trademark or registered trademark of NFC Forum, Inc. in the United States and in other countries. |
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Mode S™ - improves the repeatability of samples that cause inconsistent readings. |
Key Features of the Atago Alcohol Liquid Special Scale PAL Series Refractometers:
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Alcohol Measurement:
- These refractometers are equipped with a special alcohol scale, specifically designed to measure the alcohol content of beverages. The scale is highly accurate and tailored for different alcoholic liquids such as wine, beer, spirits, and cocktails.
- Alcohol content is measured by analyzing the refractive index, which correlates with the concentration of alcohol and other dissolved components in the liquid.
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Wide Range of Measurements:
- The Atago PAL alcohol refractometers typically measure alcohol content in the range of 0-100%, which makes them suitable for testing a broad range of alcoholic beverages, including very high-proof spirits or diluted products.
- Depending on the model, these refractometers may offer additional scales for measuring Brix (sugar concentration) or specific gravity, providing a comprehensive view of the liquid's composition.
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Precision and Accuracy:
- Atago refractometers are known for their high accuracy, even at low alcohol concentrations. This is especially important in applications such as wine production, where slight changes in alcohol content can affect the flavor, mouthfeel, and overall quality.
- These devices deliver fast and precise readings, often with a standard deviation of less than 0.1%, ensuring reliability in measurements.
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Automatic Temperature Compensation (ATC):
- One of the standout features of Atago PAL refractometers is automatic temperature compensation. Alcohol content measurements can be influenced by temperature, so ATC ensures that the readings are accurate regardless of the ambient temperature, making the device reliable in various environments without manual adjustments.
- One of the standout features of Atago PAL refractometers is automatic temperature compensation. Alcohol content measurements can be influenced by temperature, so ATC ensures that the readings are accurate regardless of the ambient temperature, making the device reliable in various environments without manual adjustments.
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Portable and Easy to Use:
- The PAL Series models are designed to be compact and portable, allowing for quick testing on the go. Whether in a production environment, laboratory, or on-site in a vineyard or distillery, the handheld units are convenient for field use.
- The devices typically feature a simple interface with a digital screen, making it easy for users to read the results in seconds.
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Minimal Sample Volume:
- Atago alcohol refractometers require very small sample volumes, usually just 2-3 drops of liquid, which makes them highly efficient and prevents the waste of expensive or precious beverages.
- Atago alcohol refractometers require very small sample volumes, usually just 2-3 drops of liquid, which makes them highly efficient and prevents the waste of expensive or precious beverages.
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Durability and Maintenance:
- These refractometers are built with robust materials, allowing them to withstand frequent use in industrial environments. They are easy to clean and maintain, ensuring long-term reliability and ease of operation.
- These refractometers are built with robust materials, allowing them to withstand frequent use in industrial environments. They are easy to clean and maintain, ensuring long-term reliability and ease of operation.
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Multiple Scales (Optional):
- Many models in the PAL Series are versatile and can support multiple scales, such as Brix, refractive index, and concentration. This makes the refractometer adaptable to a variety of other liquid testing needs beyond alcohol content, such as determining sugar content in wine or beer before fermentation or in cocktails.
- Many models in the PAL Series are versatile and can support multiple scales, such as Brix, refractive index, and concentration. This makes the refractometer adaptable to a variety of other liquid testing needs beyond alcohol content, such as determining sugar content in wine or beer before fermentation or in cocktails.
Common Applications of Atago Alcohol Liquid Special Scale PAL Series Refractometers:
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Wine Production:
- Winemakers use these refractometers to monitor alcohol levels in wine after fermentation. This is essential for ensuring the wine’s alcohol content falls within the desired range and for meeting legal or quality control standards.
- Winemakers use these refractometers to monitor alcohol levels in wine after fermentation. This is essential for ensuring the wine’s alcohol content falls within the desired range and for meeting legal or quality control standards.
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Distilleries:
- In spirit production (whiskey, vodka, gin, etc.), Atago refractometers are used to determine the proof or alcohol by volume (ABV) of the spirit during and after distillation. This ensures that products meet regulations and quality standards.
- In spirit production (whiskey, vodka, gin, etc.), Atago refractometers are used to determine the proof or alcohol by volume (ABV) of the spirit during and after distillation. This ensures that products meet regulations and quality standards.
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Beer Brewing:
- Brewers use alcohol refractometers to monitor the fermentation process. By testing the alcohol content and Brix levels at different stages, they can track how fermentation is progressing and when it should be stopped.
- Brewers use alcohol refractometers to monitor the fermentation process. By testing the alcohol content and Brix levels at different stages, they can track how fermentation is progressing and when it should be stopped.
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Cocktail Production:
- In bars or high-end beverage establishments, these refractometers can be used to verify the alcohol content of cocktails, ensuring consistency and quality in every drink.
- In bars or high-end beverage establishments, these refractometers can be used to verify the alcohol content of cocktails, ensuring consistency and quality in every drink.
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Quality Control in Alcoholic Beverages:
- Atago refractometers are used for quality control purposes in production environments. Consistency in alcohol content is critical, and these tools help manufacturers achieve precision in every batch.
- Atago refractometers are used for quality control purposes in production environments. Consistency in alcohol content is critical, and these tools help manufacturers achieve precision in every batch.
How It Works:
The Atago PAL Alcohol Refractometer uses the principle of refractive index measurement. Alcohol and other dissolved solids like sugars or minerals affect the way light is refracted as it passes through a sample. By measuring how the light bends, the device calculates the alcohol concentration or other dissolved components in the liquid.
- Sample Placement: A few drops of the liquid are placed on the prism.
- Light Refraction: The light from the refractometer passes through the sample, and the refracted light is detected by the device.
- Display: The device quickly calculates and displays the alcohol content or other parameters on the digital screen.
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ManufacturerAtago Co Ltd
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Country of OriginJapan
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TypeEthyl Alcohol (mL/100mL), Ethyl Alcohol (g/100g), Methyl Alcohol, Isopropyl Alcohol (g/100g), Isopropyl Alcohol (mL/100mL), Polyvinyl Alcohol
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ModelPAL-33S, PAL-34S, PAL-36S, PAL-37S, PAL-131S, PAL-85S
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Measurement RangeEthyl Alcohol : 0.0 to 53.0% Temperature : 5.0℃ to 30.0゚C, Ethyl Alcohol : 0.0 to 45.0% Temperature : 10.0℃ to 35.0゚C, Methyl Alcohol : 0 to 35% Temperature : 10.0℃ to 35.0゚C, Isopropyl Alcohol : 0.0 to 60.0% Temperature : 10.0℃ to 35.0゚C, Isopropyl Alcohol 0.0 to 20.0% Temperature 10℃ to 35゚C, Polyvinyl Alcohol 0.0 to 20.0% Temperature 10℃ to 35゚C