The Kopulak Sandstone from Poland can potentially be used in a kitchen, depending on various factors. Kopulak Sandstone is a durable and natural material commonly used in construction for both interior and exterior applications, including countertops and flooring.

However, when considering its use in a kitchen, a few factors should be taken into account:

1. Porosity: Natural stone, including sandstone, can be porous. If not properly sealed and maintained, the stone may absorb liquids and stains. It is essential to ensure that the sandstone is adequately sealed to make it more resistant to spills and stains in a kitchen environment.

2. Heat resistance: Sandstone is generally heat resistant but can be affected by extreme temperature changes. Direct contact with hot pots, pans, or other heated objects without proper protection may potentially damage the surface.

3. Maintenance: Sandstone requires regular cleaning and maintenance to preserve its appearance. Spills should be promptly cleaned to prevent staining, and periodic resealing may be necessary.

4. Hardness: While sandstone is reasonably durable, it is not as hard as granite or quartz. It may be more susceptible to scratches or chips from sharp objects, heavy impacts, or abrasive materials.

Considering these factors, it is crucial to consult with a professional before using Kopulak Sandstone in a kitchen to ensure it is suitable for your specific needs and properly installed and maintained to maximize its lifespan.