26 February 2026

Mastering Suspension Dissolution

Consistency in suspension testing is often undermined by how the sample enters the vessel – especially with viscous systems, sediment‑prone APIs, or larger particle sizes.

Small differences in angle, depth, or speed during manual dosing can shift hydrodynamics and skew results. 

The new SOTAX suspension adapter solves this everyday variability. It guides controlled, centered delivery from a dosing syringe directly through the tablet‑drop opening into the dissolution vessel – standardizing introduction and improving test‑to‑test reproducibility with the rotating paddle method (USP Apparatus 2).

Designed for Xtend™ Dissolution workflows, the adapter integrates without altering the established USP 2 setup – no changes to vessel, paddle, or drive geometry.

What you gain
 

• Controlled, centered, and repeatable dosing into the vessel 

• Reduced variability tied to manual sample introduction

• Stronger method robustness and cleaner batch‑to‑batch comparability—using the USP Apparatus 2 you already trust

See it in practice: Explore the application note for setup steps and practical guidance on dissolution testing of suspensions with the rotating paddle method, or ask your local sales representative.