Factors Affecting Results

The results obtained with the Fish Fatmeter can be affected by various factors:-

Operator

The operator of the equipment must use the instrument in a consistent manner and follow the guidelines set out in this handbook and appendices. Take care that:-

  • The sensor head is fully in contact with the sample or specimen prior to taking a reading and not at an angle to the surface. Should the sensor head NOT be fully in contact with the fish, the Fatmeter may display a high, erroneous reading.
  • The sensor head is clean and no excess oil or water is present.
  • The sensor head is not removed from the fish before releasing the ‘Read’ measurement button.

Samples/Specimens

Where possible, follow diligently the guidelines within the handbook and appendices. It is possible to use the Fatmeter on fish species other than those for which the instrument is calibrated, and in different ways, however, the results obtained will not necessarily be accurate. They should allow, however, reproducible results which may be used as a basis for calibration or measurement.

Where wholly consistent results are required, then the procedures as laid down in the Measurement Charts supplied, must be adhered to, or, in the case of a different fish species, a specific calibration obtained from Distell.

Please ensure that:

  • The specimen/sample has been prepared as per guide lines.
  • Any excess surface slime, water or oil on the skin of the fish should be lightly removed by wiping off the excess by hand. There is no need to completely dry the specimen/sample.
  • The specimen / sample is NOT dehydrated. As the Fatmeter is actually measuring the water content as part of the measurement of oil content, it is important that the specimen has not been allowed to dry out.