Tapped Density Testing.

Tapped density of powders or granulates is an increased bulk density attained after mechanically tapping a cylinder containing the sample. SOTAX tapped density testers combine Method 1 and Method 2 with different stroke heights (drop) as described in United States Pharmacopeia (USP <616>) and European Pharmacopoeia (Ph. Eur. 2.9.34) in one compact unit. Comparison of the bulk and tapped densities with Compressibility Index and Hausner Ratio indicate the ability of the powder to flow and settle.

TD1 –

One compact tapped
density tester for two
testing methods.

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Compact tester that combines two USP / Ph.Eur. methods in one instrument with small footprint requirements. Print test protocols and connect your external analytical balance for automated transfer of weight readings. Full Pharmacopeia compliance and password protection to prevent unauthorized access.

  • Combines two test methods with different stroke heights in one compact instrument
  • Full compliance with USP <616> Method 1/2 and European Pharmacopoeia Ph.Eur. 2.9.24 Method 1/2
  • Printed test protocols that include tapped density calculations, Compressibility Index, and Hausner Ratio
  • Complies with applicable norms and standards ASTM B 527 and DIN EN ISO norm 787-11 and ISO 3953
  • Password protection to prevent unauthorized access and menu-guided qualification procedure with printed report
  • Easy and fast operation with quick-lock cylinders and SingleButton™operation
  • Different cylinder sizes and volumes possible


Simply versatile.

The TD1 combines two USP / Ph. Eur. test methods with different stroke heights into one compact single station instrument. Its unique quick-change holder accepts various cylinder sizes / volumes – making it the ideal tester for both routine and research tasks. Starting test sequences is fast and easy with SingleButtonTM navigation.

Regulatory compliance.

Robust in design, the TD1 fully complies with all applicable norms and standards for tapped density testing of powders – including Pharmacopeia, ASTM, and DIN EN ISO. Qualification intervals can be set as required by your internal procedures. To ensure standardized execution, the qualification routine is fully menu-guided.

Reporting results.

To document testing sequences, the TD1 features built-in reporting capabilities. Test protocols with automatic calculation of Tapped Density, Compressibility Index, and Hausner Ratio can be printed on completion of a test. If needed, the TD1 can also be integrated with q-doc® data management for consolidated batch reporting of various tests performed on different instruments.


Data management software for all methods, results, and users.

q-doc® software

All your data in one place with built-in 21 CFR part 11 compliance.