Pycnometer measures true density (solid only, no voids). Bulk density tester includes voids. For the same powder, bulk density ≤ true density.
This document provides general guidance. Always refer to your specific instrument manual and required regulatory standard for exact test parameters. bulk density tester
Yes – use a 10 mL or 25 mL cylinder with 0.001 g balance. Some micro-tap density testers exist (e.g., Quantachrome Autotap with 5 mL insert). Pycnometer measures true density (solid only, no voids)