Important to Consider When Handling Kerkes Sauna Stones

The core of a Kerkes Sauna Stone becomes glass-like when it is burned. The stones must not be submerged in water, not even partially, because with time, they may absorb water. If a stone with moisture inside is heavily heated, the water will evaporate and it will break. Stones set in the stove can only get moisture inside of them if they have been placed in a closed basin and if there is water left in the bottom of the stove basin after the taking a sauna.

Removal of Lime Residue from Kerkes Sauna Stones

Over time, a stone can get a white film on its surface from water containing lime. This prevents heat conduction in the stone and its surface can disintegrate.

The stones can cleaned by carefully following these instructions:

1. Submerge the stones in clean water for eight hours. The porous stone will absorb the clean water. This will reduce the absorption of acid into the stone and makes rinsing easier.
2. Make a 4% hydrochloric acid solution in a plastic container.
3. Submerge the stones in the acid solution and leave them there until there is no longer any reaction.
4. Rinse the stones under running water until the water runs clear.
5. With the tip of your tongue, you can check if the stone no longer tastes acidic.
6. Let the stones dry spaciously on a porous surface. The sun or a blower will speed up the drying process.
7. Stack up the stones back on the sauna stove. Make sure that the stones are dry, as wet stones will crackle when the temperature rises quickly.
8. To be on the safety side, you should heat up the sauna stove slowly the first time.

REMEMBER TO USE SAFETY GLASSES AND ANY OTHER NECESSARY PROTECTION GEAR WHEN HANDLING HYDROCHLORIC ACID. YOU CAN GET THE ACID AND THE DETAILED HANDLING INSTRUCTIONS AT YOUR LOCAL PHARMACY.