HFlow 1 - Flowability Tester

The HFlow 1 flowmeter funnel from Bettersize Instruments is an accurate, dependable instrument that has been specifically designed to measure bulk density and flow rate in pharmaceutical and metal powders.

This flowability tester provides reliable, precise powder flowability measurements while allowing the sample to flow through a standard Carney funnel, Hall funnel, or Gustavsson funnel.

As an instrument compliant with relevant USP, Ph. Eur., ASTM, and ISO standards, this flowability tester is ideally suited for use in production facilities and laboratories working with pharmaceutical and metal powders.

Features and Benefits

  • Suitable for both bulk density and flow rate measurements
  • Advanced flowmeter funnel technology
  • Suitable for use with three common funnels: Hall (2.5 mm orifice), Carney (5 mm orifice), and Gustavsson (2.5 mm orifice)


Source: Bettersize Instruments Ltd.

  Hall Funnel Carney Funnel Gustavsson Funnel
Orifice Diameter 2.5 mm 5 mm 2.5 mm
Funnel Angle 60° ± 0.2 60° ± 0.2 30° ± 0.5
(for flow rate)
● USP <1174>
● Ph. Eur. <2.9.36>
  • ISO <4490> 
  • ASTM <B213>
  • ASTM <B964>
  • ISO <13517>
(for bulk density)
  • ISO <4490> 
  • ASTM <B212>
  • ISO <3923-1> 
  • ASTM <B417>
  • ISO <3923-1> 
  • ISO <13517>
Volume of Cups 25 ± 0.05 ml

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