Third-Party Tested: Empty & Filled Capsules – Tianzhong Kangyuan Delivers Verified Purity
The dietary supplement industry faces unprecedented scrutiny over capsule integrity. Recent FDA investigations have revealed that empty capsules themselves can introduce contaminants—from residual ethylene oxide used in sterilization to heavy metals leaching from manufacturing equipment . For US buyers, relying solely on finished product testing misses critical risks embedded in the capsules before filling. Tianzhong Kangyuan Pharmaceutical Group Co., Ltd. tests both empty and filled Dietary Capsules through independent laboratories, ensuring complete supply chain verification.
The Dual-Testing Imperative for Dietary Capsules
Dietary Capsules consist of two distinct components requiring separate validation. Empty capsules must meet USP <660> specifications for container integrity, including dissolution testing ensuring complete breakdown within 45 minutes per USP <701> . Shell materials—gelatin or HPMC—require screening for heavy metals (USP <232>), residual solvents (USP <467>), and microbial contamination (USP <61>, <62>) before filling begins . For vitamin e dietary supplement formulations, capsule shell compatibility affects ingredient stability, with certain actives accelerating cross-linking that delays dissolution . Our third-party testing validates both empty shells and finished nutrition vitamins supplements, eliminating the "batch failure" scenarios that plague manufacturers testing only final products.
Tianzhong Kangyuan: Independent Verification Infrastructure
Tianzhong Kangyuan Pharmaceutical Group Co.,Ltd maintains relationships with ISO 17025 accredited laboratories for truly independent verification. Unlike manufacturers conducting internal testing without external validation, we submit every Dietary Capsules batch—empty and filled—to third-party analysis . For vitamin food supplement lines competitive with premium brands like phyto phytophanere, our testing protocols include:
Empty capsule dissolution profiling per USP <701> before filling
Heavy metal analysis of empty shells (arsenic, cadmium, lead, mercury) via ICP-MS
Residual solvent screening for manufacturing byproducts
Microbial enumeration and pathogen testing
Finished product potency verification by HPLC
Stability-indicating assays at 0, 3, 6, 12, 18, and 24 months
This dual-layer verification ensures your vitamin e dietary supplement products arrive with complete provenance—documented from raw capsule shell through filled nutrition vitamins supplements.
Service Response: Third-Party Certificates with Every Shipment
Understanding that FDA investigators scrutinize testing independence, our US-dedicated account team provides third-party Certificates of Analysis for every Dietary Capsules batch—both empty and filled. When your vitamin food supplement shipments face customs review, you possess laboratory evidence from independent ISO 17025 facilities, not internal quality department documentation . For formulations targeting phyto phytophanere competitors, our third-party dissolution data validates that capsules perform identically to premium European brands.
The Third-Party Testing Advantage
Tianzhong Kangyuan Pharmaceutical Group Co.,Ltd delivers Dietary Capsules verified at every stage. While competitors test only finished nutrition vitamins supplements, our protocols examine empty shells for contaminants that would otherwise enter your products undetected. Partner with us for vitamin e dietary supplement lines backed by independent laboratory documentation—from empty capsule through filled vitamin food supplement. Your brand deserves the confidence of third-party verified purity.
