Hollow gelatin capsules

Selecting the correct size is critical for dosage accuracy. Standard sizes range from 000 (largest, ~1.37ml) to 5 (smallest, ~0.13ml). You must match the capsule size to the bulk density of your filling material (powder, granules, or pellets). Additionally, ensure you choose between separated or pre-locked capsules based on your filling machine's requirements. For moisture-sensitive fillings, verify the water content specification, which typically stays between 13% and 16% for standard gelatin.

As a health-related product, compliance is non-negotiable. Ensure the supplier holds GMP (Good Manufacturing Practice) certification and ISO 9001. For international trade, look for FDA registration (for the US market) or EDQM/CEP (for Europe). If targeting specific consumer groups, verify Halal or Kosher certifications, as gelatin is animal-derived (usually bovine or porcine). The product must meet USP (United States Pharmacopeia) or EP (European Pharmacopoeia) standards for disintegration time and microbial limits.

To prevent machine downtime, focus on the brittleness and elasticity of the capsule. High-quality capsules should have a breakage rate of less than 0.01% during high-speed filling. Check the locking force to ensure the cap and body do not separate during transport but close securely during production. Wall thickness uniformity is also vital; variations can cause 'telescoping' or dented ends, which disrupt the automated filling process.

The quality of the gelatin (bone vs. skin) affects the bloom strength (viscosity) and clarity. Bovine bone gelatin is generally preferred for its structural rigidity. Ensure the supplier provides a BSE/TSE-free certificate to prove the raw materials are sourced from safe, disease-free cattle. For premium brands, transparency and luster are key aesthetic attributes that reflect the purity of the gelatin used.

Gelatin capsules are highly sensitive to environmental conditions. They must be shipped in temperature-controlled containers (Reefer containers) maintained between 15°C and 25°C, with relative humidity between 35% and 65%. Extreme heat causes capsules to stick together (clumping), while low humidity makes them brittle. Always use heavy-duty corrugated cartons with antistatic plastic liners to protect against moisture and physical pressure during long-haul transit.

Utilize Made-in-China.com's 'Audited Supplier' reports to verify the factory's actual production capacity and hygiene levels. Before placing a bulk order, request a COA (Certificate of Analysis) for the specific batch and perform a third-party lab test (such as SGS or Intertek) to verify heavy metal limits (Lead, Arsenic, Mercury) and microbial counts. Use Trade Assurance or secure payment terms to protect your capital until the quality is verified.

Because gelatin is an animal-derived product, many countries require a Veterinary Health Certificate issued by the exporting country's authorities. Failure to provide this can lead to quarantine delays or destruction of goods. Ensure the HS Code (typically 9602.00 or 3503.00) is correctly declared and that all labeling complies with the destination country's food and drug administration language requirements.

Since capsules are a high-volume consumable, negotiate based on annual volume commitments rather than one-off orders to secure a 10-20% price reduction. Ask for customized printing (axial or radial) to be included in the price for brand protection. For established buyers, try to negotiate Net 30 or Net 60 payment terms after a successful initial cooperation period to improve your cash flow.