Calcium hydroxide, 0.02 M, 0.04 N. Saturated solution, 1.5 g per liter of Ca(OH)2. Use some excess, filter off CaCO3 and protect from CO2 of the air.
Potassium hydroxide, 3 M, 3 N. Dissolve 176 g of the sticks (95%) in water and dilute to 1 liter.
