Knowledge Center
Technical and regulatory guidance for capsule buyers
Practical, in-depth articles for the QA, production, and procurement teams that specify and buy empty capsules — written to be useful on the line and in an audit, not to sell.
HPMC vs Gelatin Capsules
A technical decision guide for QA, production, and procurement teams choosing between hypromellose (HPMC) and gelatin two-piece capsules — covering composition, moisture behavior, cross-linking, dissolution, machine performance, and certification fit.
Capsule Quality and Machine Downtime
Empty-capsule geometry, moisture, and lot consistency are line-speed variables, not cosmetics. Here is how the shells you buy determine whether an encapsulation line runs clean or stops.
Capsule Size Guide (#000–#5)
Empty two-piece capsules follow a fixed size scale from #000 down to #5. This guide maps each size to its nominal volume, explains why fill weight is governed by powder density rather than the size alone, and shows how to move from a target dose to a defensible shell choice.
Questions to Ask Before Placing a Capsule Order
Choosing a capsule supplier is a quality and continuity decision, not a purchasing one. This checklist walks through what a manufacturer's QA and procurement teams should confirm before committing an order — and why each answer matters on the production floor and in an audit.