Calculate f1 and f2 Dissolution Values in Excel — Accurately and Instantly.

The validated Excel add-in for pharmaceutical scientists. Automate your dissolution analytics without learning new software or compromising data security.

The Problem with Manual f1/f2 Calculations

Writing f1 and f2 formulas manually in an Excel sheet looks straightforward. In practice, there are at least four ways to get the wrong answer:

• Syntax Errors: Misplaced or missed parentheses that completely alter the result.

• Regulatory Misses: Forgetting to exclude time points where Rt > 85% (the 85% rule).

• Data Drift: Rounding values inconsistently between different steps in the calculation.

• Blind Spots: No CV check, meaning non-qualifying data gets included without warning.

The troubling part: Excel produces a number either way. You won’t always know when something is wrong.

Stop Second-Guessing Your f2 Formula.

Determine values for f1 difference and f2 similarity factors in a fraction of the time. Watch how it works:

Key Benefits:

• 100% Secure: No internet connection required and no data is uploaded anywhere.

• Zero Onboarding: Everything is handled inside the Excel environment you already use. No new software to learn.

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Excel in Science — Validated Excel Tools for Pharmaceutical Analysis

Frequently Asked Questions

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