Sun, 03 May 2026 14:17:40 +0000

A virologist is designing an experiment where she needs to prepare 120 mL of a 10% saline solution. She has a stock solution of 25% saline. How many milliliters of the stock solution does she need to use, and how much water should she add to achieve the desired concentration?
This challenge is gaining attention in scientific and lab communities across the U.S., as accurate saline preparation is essential for consistent experimental results and patient safety. When working with concentrated stock solutions, precise dilution ensures reliability—critical when variables like concentration directly impact research outcomes. ## Why This Calculation Matters Now In academic and clinical settings, saline solutions are foundational in laboratories, diagnostics, and medical protocols. The ability to reliably dilute a stock solution to a target concentration—like 10% for cell culture media or solution buffers—reflects fundamental knowledge in scientific workflow management. As research accuracy grows more central, even routine steps like saline preparation become key points of focus for maintaining reproducibility. For professionals and students alike, mastering this ratio ensures readiness and precision. ## How to Dilute the Stock Solution Safely