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Fish Analyzer

Yamato Scale's Fish Analyzer measures fish fat (lipid) & fish freshness with one device. Fast, easy & accurate.

Purchase or questions, contact us:
  • Yamato Scale Fish Analyzer
  • Yamato Scale Fish Analyzer Front
  • Yamato Scale Fish Analyzer Measure
  • Yamato Scale Fish Analyzer Double

Benefits & Features

Results in seconds

Accurate & instant results to make on the spot decisions.

Handheld & Portable

Light weight & small. Carry it in your bag & take it anywhere.

Rugged & Durable

Water proof to IP65 standards & made for use in wet conditions.

All day battery life

Up to 8 hours of use to last all day for outdoor field measurements.

Non destructive

Use your fish and meat again, it does no harm!

Easy to use

Use it right out of the box with no special training needed.

Research

Government, University & Non-profit organization research projects.

Quality Control

Objective & data driven results to ensure consistent quality.

Fishing Contests

Determine winners & rule enforcement of fishing contests and derby's.

Our Clients

Trusted by world's most demanding Scientists, Researchers & Technicians.
USGSEPA
NOAAFDA

Measure Fish Fat & Fish Freshness with one device!

Yamato Scale's Fish Analyzer is the world's only hand held device that can measure both fish fat & fish freshness. Accurate results in less than 4 seconds, non-destructive and easy carry hand held device.

Currently supports 20 fish specie with the option of making a custom calibration for your specific fish.

It's widely used in Japan's fish markets, grocery stores, Universities and private laboratories. Now available for purchase worldwide!
Yamato Scale Fish Analyzer Front
Yamato Scale Fish Analyzer Fish Market

How does it work?

Yamato Scale's Fish Analyzer measures electrical impedance of the fish to provide fish fat percentage & fish freshness. Fish freshness is graded on 5 levels from A, A', B, C and D.  

The device applies a small multi-frequency electrical current to the fish to measure the impedance (resistance). The impedance measurement tells the device how much water content is in the fish and from its unique algorithm, outputs the result of the fish fat percentage and fish freshness.

Fish Freshness Grading Scale

Yamato Scale Fish Analyzer Freshness Grading Scale
How to read the chart:
Status of Fish: Grading from A/A', B, C and to D.

A/A' = very fresh
B = Fresh
C & D = Edible but must be cooked.
Yamato Scale Fish Analyzer Fish Market 3

Easy To Use & Rugged

Fast, Easy & Accurate results in 4 seconds! Power it on, select the fish, take the measurements and get your results. It's that easy and quick!
Ease of Use:
No special training or prior knowledge needed.
Bluetooth wireless connection to PC. (coming soon)
Big LCD display & easy to navigate menu options.
Rugged & Ready for Outdoor!
Water proof to IP65 standards for wet condition use.
Durable & sturdy casing for rugged outdoor use.
2 AA battery good for up to 15,000 measurements.

Results in seconds & Non-destructive

Take few measurements on the fish and get the fish fat percentage & fish freshness grading. Accurate results in seconds.

Yamato's Fish Analyzer was designed to be used on live fish since it does no harm. Once you're done taking the measurements, reuse the fish any way you like.

Great for markets or grocery quality control, to monitor growth for research or to determine if the fish was previously been frozen. May use cases!
Yamato Scale Fish Analyzer Fish Market 4
Yamato Scale Fish Analyzer Fish Market 2

Limitations

No device is perfect, this goes for Yamato's Fish Analyzer as well. We are 100% upfront with what's capable with this device.
Minimum fish size needed: fillet (body) portion must be at least 0.4 inch (1cm) thick and at least 4 inches (10cm) long.
Can NOT measure frozen fish, it must be completely thawed or defrosted.
No Bluetooth wireless connection feature yet. It's coming soon.

Fish Species Supported & Where to Measure

Yamato Scale Fish Analyzer Horse Mackeral
Horse Mackerel 1
- Place the sensor between the first and second fins just above the sideline.
Yamato Scale Fish Analyzer Mackerel 1
Mackerel 1
- Place the sensor between the first and second fins just above the sideline.
Yamato Scale Fish Analyzer Mackerel 2
Mackerel 2
- Place the sensor on the back of the dorsal fin little above the side line.
Yamato Scale Fish Analyzer Sardine
Sardine
- Place the sensor in the center of the dorsal fin little above the side line.
Yamato Scale Fish Analyzer Saury
Saury
- Place the sensor on the center of the belly
fin little above the side line.
Yamato Scale Fish Analyzer Yellowtail
Yellowtail
- Place the sensor between the first and second fins just above the sideline.
Yamato Scale Fish Analyzer Bluefin Tuna (back)
Bluefin Tuna (back)
- Place the sensor on the back end of chest fin little above the side line.
Yamato Scale Fish Analyzer Bluefin Tuna (belly)
Bluefin Tuna (belly)
- Place the sensor on the back end of chest fin and the belly fin right along the side line.
Yamato Scale Fish Analyzer Bluefin Tuna (tail)
Bluefin Tuna (tail)
- Place the sensor to the back of the anal area slightly below the side line.
Yamato Scale Fish Analyzer Sea Bream
Sea Bream
- Place the sensor on the back of the dorsal fin little above the side line.
Yamato Scale Fish Analyzer Alfonsino
Alfonsino
- Place the sensor on the center of the dorsal fin little above the side line.
Yamato Scale Fish Analyzer Bonito
Bonito 1
- Place the sensor between the first and second fins just above the sideline.
Yamato Scale Fish Analyzer Salmon
Salmon
- Place the sensor on the center of the dorsal fin little above the side line.
Yamato Scale Fish Analyzer Rainbow Trout
Rainbow Trout
- Place the sensor on the center of the dorsal fin little above the side line.
Yamato Scale Fish Analyzer Spanish Mackerel
Spanish Mackerel
- Place the sensor on the tip of the second fin little above the side line.
Yamato Scale Fish Analyzer Butterfish
Butterfish
- Place the sensor on the tip of the dorsal fin little above the side line.
Yamato Scale Fish Analyzer Sea Bass
Sea Bass
- Place the sensor to the back end of the 1st fin, little above the side line.
Yamato Scale Fish Analyzer Sailfin Sandfish
Sailfin Sandfish
- Place the sensor on the tip of the dorsal fin little above the side line.
Yamato Scale Fish Analyzer Grouper
Grouper
- Place the sensor on the tip of the dorsal fin little above the side line.
Yamato Scale Fish Analyzer Bonito 2
Bonito 2
- Place the sensor between the first and second fins little above the side line.

Download fish species supported list.

Don't see the fish specie you want to measure?

Yamato Scale's Fish Analyzer supports Custom Calibration, contact us for more details. 
Yamato Scale Fish Analyzer Fish Specie List (PDF)

Fish Analyzer Details

Yamato Scale's Fish Analyzer comes with a small attachment sensor to measure small fishes.
Yamato Scale Fish Analyzer Front
Meter size
3.11 x 1.42 x 6.89 inch
(79 × 36 × 175 mm)
- without sensor attachment

3.11 x 1.42 x 7.44 inch
(79 × 36 × 189 mm)
- with sensor attachment
Weight
0.40 lbs (with battery)
(180 grams)
Sensor size
1.97 x 1.0 x 0.4 inches
(50 x 25 x 10 mm)
Meter casing material
ABS plastic with IP65 water proof
Sensor operating frequencies
5, 20, 50 100 kHz
Minimum fish size it can measure (length)
4 inches
(10 cm)
Minimum fish thickness it can measure
0.4 inch (10 mm)
Battery type
2 x AA size
Shipment weight for 1 meter
1.5 lbs (0.6 kg)
Battery life
15,000 measurements
2 AA batteries

Fish Analyzer FAQ

How do I purchase and buy the Torrymeter?
Please call us at: 1.800.295.6134 or email at: info@assurantinnovations.com
We do not provide pricing information on our websites.
What is the minimum fish body size and thickness needed for Distell's Fish Freshness Meter (Torrymeter) to measure accurately?
For Distell's Fish Freshness Meter (Torrymeter), the minimum fish body size (not including the head or tail) is 2 inches (50 mm).

For fish thickness, the body (torso) is 0.4 inch (10 mm) to measure the fish freshness accurately.
How accurate is Distell's Fish Freshness Meter (Torrymeter)?
Distell's Fish Freshness Meter (Torrymeter) has an accuracy of +/- 1 day on an un-irradiated, unfrozen or thawed fish. Many factors go into the accuracy such as fish species and how the fish is handled, but more or less +/- 1 day.

You can determine if the fish has been previously frozen right away.
What can Distell's Fish Freshness Meter (Torrymeter) be used for?
The Torrymeter was developed to measure freshness of fish, whole fish and fillet fish such as: Cod, Whiting, Herring, Mackerel, Tilapia and others. The Torrymeter can measure freshness of most fish species caught and processed around the world.

The Torrymeters are also used to:
- estimate the freshness and quality of fish
- grade fish according to European & International Standards (E-A-B)
- determine if a fish has been frozen or irradiated
- estimate shelf life in fish markets and stores
- check the age of fish during fishing and angling competitions
How does Distell's Fish Freshness Meter (Torrymeter) work?
The Torrymeter emits a low frequency 2 KHz signal from one sensor and calculates the difference by the receiving sensor. The results is processed and provides the Freshness Scale which is developed by Distell's experience and knowledge.
Can the fish being measured be used after testing?
Yes it can. The Torrymeter is non-destructive measurement device and tool so it does no damage to the fish. You can measure the fish many times as needed without affecting the quality of the fish. After measurement, you can sell it or cook to eat safely.
Can the Fish Freshness Meter (Torrymeter) measure on live fish?
Yes it can. The Torrymeter can be used to measure on live fish as long as you're able hold the fish steady for then sensors to take measurements. Since the Torrymeter is a non-invasive and non-destructive device, it's harmless to use on live fish.

It's a great way to monitor the fish health and growth as it responds to certain diets and environmental conditions.
Can Distell's Fish Freshness Meter (Torrymeter) measure frozen fish?
Yes it can. The Torrymeter can be used to measure on live fish as long as you're able hold the fish steady for then sensors to take measurements. Since the Torrymeter is a non-invasive and non-destructive device, it's harmless to use on live fish.

It's a great way to monitor the fish health and growth as it responds to certain diets and environmental conditions.
What precautions should I take when comparing Distell's Fish Freshness Meter (Torrymeter) results with laboratory analysis?
When you're comparing Distell's Fish Freshness Meter (Torrymeter) with a laboratory analysis, make sure to follow proper preparation procedure. Otherwise, you may get a different result from the laboratory and will cause confusion.

Preparation instructions are clearly described in Distell's Fish Freshness Meter (Torrymeter) Handbook, however, here are some guidelines:

- Place the sensor head fully in contact with the sample (fish) being tested carefully to exclude any air cavities.
- Press and hold the ‘READ’ button until the reading has been taken and is displayed on the LCD screen.
- Measure in the same location each time to be consistent.
- It's normal for Distell's Fish Freshness Meter (Torrymeter) to give different value results at different measurement locations on the same fish.

Different parts of the fish will spoil at different rates due to the bacteria levels, fat content, muscle structure and cell disruption within the fish.
Do we still need to conduct a normal laboratory test to confirm the measurement results?
You're free to conduct normal laboratory test anytime, however Distell's Fish Freshness Meter (Torrymeter) is designed to measure as many times needed to test the fish. Occasional laboratory tests can be conducted to confirm the results of Distell's Fish Freshness Meter (Torrymeter) readings. If you find any discrepancies, please contact us to have the meter calibrated.
What are some limitations of Distell's Fish Freshness Meter (Torrymeter)?
Distell's Fish Freshness Meter (Torrymeter) can not measure the following:
- Fish that is frozen, it must be thawed or defrosted
- Irradiated
- Cooked
- Stored in salt water
- Fish with thick-skin
- Fish skin has dried out
Does temperature affect the performance or results of Distll's Fish Freshness Meter (Torrymeter)?
Within the overall measurement limits of 0C to 10°C (32F to 50F) and provided that the fsh or fish fillet being measured with Distell's Fish Freshness Meter (Torrymeter) contains no ice crystals, temperature should have no significant effect.

Where the fish or fish fillets have been previously frozen or contain ice crystals, Distell's Fish Freshness Meter (Torrymeter) will display a low value result (normally between 1 and 4). This is because freezing the fish disrupts its cell structure which affects the capacitance and conductivity within the flesh, similarly to the cellular breakdown caused by bacteriological activity. This low value displayed by the Torrymeter infers that the change in conductivity is spoilage.

If the fish has been previously frozen, it may look fresh, high quality, not spoiled or smelly. However, using Distell's Fish Freshness Meter (Torrymter) will quickly check if the fish has been previously frozen. As a fish buyer, this is important as the shelf life of previously frozen fish is significantly lower than that of the fressh fish or fish that have been stored properly at or slightly above 0° C since being caught.

We've found that fish and fish fillets down to –2°C (28F) normally do not contain ice crystals and can be measured as normal. We've also found that fish or fish fillets stored at or above 10°C (50F) can suffer moisture loss and create a variance from the natural fish state.

For consistent accurate results, operator should make sure that fish or fish fillets are measured at the same ambient temperature on a daily basis within a temperature range of 0 – 10°C (32F to 50F).
  • Distell Fish Fat Meter
  • Distell Fish Freshness Meter Torrymeter
  • Distell Meat Fat Meter
  • Yamato Scale Fish Analyzer

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1 year warranty
&
30 days money back guarantee
1 year Warranty30 day money back guarantee
We're ready to help & support anytime.

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