Description

Features

1. It is special for inspecting the hardness of fruits, such as apples, pears, strawberries, grapes, and so on.

2. Judging the hardness and maturity of the fruits will be good for breeding, depositing, exporting, transporting, machining, etc.

3. They are widely used in fruit research departments, fruit companies, fruit farms, colleges, and so on.

4. Used to measure fruits to determine the degree of ripeness of the fruit, to reasonably grasp the picking of fine seeds, picking time, processing time, harvesting and storage, export, and transportation.

5. Small size and lightweight, direct display of value, easy to carry, suitable for all kinds of fruit inspection places.

GY Fruit Sclerometer has four model: GY-1, GY-2 and GY-3, GY-4 which are to measure the hardness of apples, pears, strawberries and grapes, etc. It is a suitable instrument for a fruit company, fruit farm, fruit research institutions to test the ripeness of fruits. With compact size, low weight and ocular reading, it is suitable to use on the scene. It also can be applied with its matched test stands to improve the accuracy

When using your penetrometer you should check it daily before each use. You can loosen the springs by working the plunger a few times. You can calibrate the penetrometer by slowly pressing down on the pan of a weighing scale (not a spring scale) until the scale measures close to what you expect fruit firmness in subsequent tests to be. Make sure the reading of the penetrometer is the same as the scale reading.

Selecting the right fruit for testing is as important as making sure your penetrometer is calibrated. Such points to remember when selecting fruit are:

Avoid testing undersized or oversized fruit.
Trees you take the fruit from should be representative of the entire block’s age and vigour.
Use ten or more fruit from many different trees.
Take comparative readings from fruit that is the same temperature.

One you have your sample, measure firmness on each side of the fruit by using a peeler to remove the skin with a single shallow cut. Avoid taking measurements in bruised areas. Place the fruit on a hard surface – never take a measurement by holding the fruit. Push the plunger into the fruit up to the line on the probe, not the plate. Pushing the plunger at a consistent speed is important.

Because of the many variables involved in taking penetrometer readings by hand, it’s best to have one well-trained person do the testing for consistency.

Fruit hardness table

Additional information

GY1, 2 & 3 Specifications:

Penetrometer use demonstration video