Views: 0 Author: Site Editor Publish Time: 2025-05-07 Origin: Site
— From Raw Material to Pharmaceutical-Grade Precision
In high-performance medical syringes, purity is everything. At SCHOTT, the journey starts with raw material selection and batch preparation, where every grain of sand and crystal is precisely validated.
To ensure flawless transparency and chemical resistance, all raw materials undergo strict acceptance testing:
| Material | Test Method | Purity Standard |
|---|---|---|
| SiO₂ Quartz Sand | ICP-OES | >99.8% chemical purity |
| B₂O₃ | Karl Fischer | ≤0.1% moisture |
| Na₂CO₃ | Titration | ≥99.5% purity |
| Al₂O₃ | Laser Diffraction | 5–30μm particle size |
These tests are conducted on 100% of batches, with random sampling compliant to AQL 0.65 standards. Every input is backed by lot-specific certificates and dual supplier verification.
Even micro-level impurities can cause glass defects like stones or bubbles, which compromise both appearance and functionality. That’s why impurity control is the first—and arguably the most critical—step in syringe quality assurance.
After passing inspection, raw materials are fed into a gravimetric batch mixer, where precise dosing (±0.3%) and dynamic blending ensure full homogeneity. The result? A base batch ready to become SCHOTT’s signature medical-grade glass.
SCHOTT sources pharmaceutical-grade quartz and reagents
Incoming materials are validated through ICP-OES, titration, and particle analysis
Batch-level traceability and supplier control prevent glass defects from the start
Want to learn more about how raw materials shape the purity of prefilled syringes?
Contact us for OEM syringe solutions or a production consultation.
