Prepare Accurate Acid & Base Solutions with Confidence

Diluting concentrated acids and bases requires precision, starting with knowing the exact concentration of your stock solution, which often varies based on density and weight percentage purity. Westlab's improved Acid/Base Stock Solution & Dilution Calculator streamlines this entire process for greater accuracy and safety.

This tool uses a logical two-step workflow:

1. Define Your Stock Solution: Select a common concentrated acid or base (like HCl, H₂SO₄, NaOH) from the list to automatically populate its typical density, molecular weight (MW), weight % purity, and equivalents (n). Alternatively, choose "Custom" and enter the specific values from your reagent bottle. The calculator instantly displays the calculated Stock Molarity (M) and Stock Normality (N) based on these properties.
2. Plan Your Dilution: Enter your desired Final Volume and Target Concentration (you can specify the target in either Molarity or Normality).

Based on the defined stock concentration and your target requirements, the calculator determines the precise Volume of Stock Concentrate and Volume of Diluent (e.g., Water) needed. It provides clear, step-by-step preparation instructions, including crucial safety reminders for handling concentrated reagents.

Eliminate errors arising from assumed stock concentrations and ensure your diluted acid and base solutions are prepared accurately every time.