> For the complete documentation index, see [llms.txt](https://docs.rapt.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rapt.io/equipment/rapt-pill-hydrometer-or-user-guide/calibration/advanced-calibration.md).

# Advanced Calibration

**Advanced calibration mode is suited for higher gravity ferments.**

Advanced calibration mode can give greater accuracy across a wider range. Advanced calibration is also quite quick and easy, and can provide a more accurate result than Standard Calibration.

It is the same procedure as standard calibration, but in addition to water at 1.000, you need a solution of a known gravity prepared. We recommend using a gravity in the range that your fermentation will start – 1.040-1.060 for typical beers, for example.

### Enter Calibration mode <a href="#enter-calibration-mode" id="enter-calibration-mode"></a>

* Plug your Rapt Pill into a charger or computer with a USB-C cable (not included) or place on the wireless charger (if the wireless charging kit is installed)
* On your smart phone or tablet, open your WiFi settings and connect to the **RAPT Pill XXXX** access point using the password "kegland1". You may not need to enter the password if you have previously connected your device to the Pill WiFi
* Once the RAPT Pill Access Portal is open on your phone or tablet, navigate to the **Calibration** tab

### Perform Advanced Calibration

* Fill a container of sufficient volume to hold the RAPT Pill in suspension with a liquid of known gravity. It is simplest and easiest to use water or sanitiser which has a gravity of 1.000
* Fill another container capable of holding the Pill in suspension with a liquid of known gravity in the range representative of the upper limit of your starting gravity
* Place the Pill gently into the weaker solution. Ensure that it can float freely and is not touching the bottom of the vessel, as this will affect the angle
* Select **Advanced Calibration** in the Pill Captive Portal
* Enter the known gravity of the liquid - typically 1.00 for water or sanitiser at the correct dilution
* Wait for the angle reading to stabilise. The angle will never be completely steady, as it is extremely sensitive
* Hit **Calibrate** and wait for the first calibration step to be completed
* Place the Pill in the stronger solution. Enter the gravity as determined by a calibrated hydrometer. Once the angle reading has stabilised press **Calibrate**. Wait until the screen indicates that calibration is complete

**Your Pill is now calibrated and ready to use!**