Orifice Flow Time: Preserve the Test Geometry and Failure-to-Flow Result

Identify the Material Response

Copley describes flow-through-orifice testing as timing a known powder quantity through an identified cylinder and aperture. The geometry is part of the measurement, rather than an incidental accessory. Primary reference: flow-through-orifice basis.

Review a Hypothetical Comparison

Suppose 100 g of an invented sample discharges through an identified opening in 20 s, giving an average 5 g/s for that test. A second sample does not establish sustained discharge during the observation. Writing an enormous arbitrary time for the second sample would manufacture a rate that was never measured.

Keep the Evidence with the Decision

Record the aperture, cylinder, sample state, initial quantity and timing endpoint. Keep “no sustained flow observed” beside the stated observation period and method. Describe any intervention separately; a value obtained after tapping or another change cannot silently inherit the untouched-test identity. Preserve whether the collected mass actually matches the timed sample.

A short successful time under one geometry does not determine discharge under another outlet or after storage. Ask for the complete result set, including non-flowing cases, when comparing material reports. The fictional aperture test does not recommend an opening, permission to intervene or a machinery capacity. Its purpose is to preserve both measurement geometry and the limits of the observed response.

Does the reported duration belong to the same funnel and opening condition?

This blank worksheet is for your own project. It contains no H M machine trial result.

Customer Questions

Primary References

These references support the technical principles discussed in this guide. The worked examples and review questions are educational.

• Primary reference: flow-through-orifice basis
• Reference from hmpharmamachines.com