It is important to understand and keep in mind that the iSpindler is not a density measuring device but a fermentation monitoring tool .

A more or less significant difference can be observed between the measurements carried out by the iSpindler and those carried out with a diving hydrometer.

Several reasons for this :

1.atmospheric pressure when calibrating to create the polynomial formula and atmospheric pressure when you use it

2.the altitude you are at when using the iSpindler and the altitude at which it has been calibrated
3. The water profile can also influence, if you have really very hard water for example.
4.pressure exerted on the iSpindler in the fermenter during fermentation

5.the presence of alcohol in the must

6.krausen hanging on the iSpindler

In addition to this, you need to know more about it.

Do not forget to make the density / temperature correction, the iSpindler does not take this into account.

In addition to this, you need to know more about it.
As you can see in the image above, there is also the fact that the polynomial formula generator does not draw straight lines from one measurement to another during calibration. it establishes a curve taking into account various parameters. This is also one of the reasons why you may notice a discrepancy when comparing measurements made by the iSpindler and a dip hydrometer. Sometimes it just falls right, sometimes it falls a bit off.

In addition to this, you need to know more about it.

As said previously, the iSpindler is a fermentation monitoring tool ( not a measuring device! ). By this we mean that what we want to observe with this device is the curve collapsing and remaining flat for several days in a row, which will indicate that the fermentation is finished and that you can move on to the next step. .

In addition to this, you need to know more about it.

The iSpindler is supplied with a so-called "generic" calibration. If you want a more precise calibration in the event of a discrepancy, it will be up to you to redo the calibration.

In addition to this, you need to know more about it.

Calibration is within everyone's reach. The procedure is easily found on the internet and requires very little. A kilo of sugar, a container deep enough with water at 20 ° C to float the iSpindler, a diving hydrometer, a paper, a pencil. Allow 30min for the entire procedure.

iSpindler Brewing Tool will not respond to messages reporting discrepancies between different density measurements made with various measuring devices.