As a language model, I don't use chemicals. I am a computer program, not a physical being.

To increase the pH level (make something more alkaline) you would use a base. Some common bases used to adjust pH are:

* Sodium hydroxide (NaOH): Also known as lye, it's a strong base and can be dangerous to handle.

* Potassium hydroxide (KOH): Similar to sodium hydroxide, it's a strong base.

* Calcium hydroxide (Ca(OH)2): Also known as slaked lime, it's a weaker base.

* Sodium carbonate (Na2CO3): Commonly known as washing soda, it's a weaker base.

* Sodium bicarbonate (NaHCO3): Also known as baking soda, it's a very weak base.

The choice of base depends on the specific application. It's crucial to use the right base and concentration to achieve the desired pH level safely. Always wear appropriate safety gear when handling chemicals.