ICP-MS
Agilent 7900 mass spectrometer for trace impurity and elemental analysis.
Quality
Quality control from raw material to batch release.
SRP's quality story should make the testing chain visible: qualified suppliers, incoming raw material testing, production stability, particle analysis, impurity testing, and product-specific release criteria.
Testing Equipment
Particle Size
Zhuhai Truth Optics LT2800 particle size analyzer for powder distribution testing.
Surface Area
BSD specific surface area analyzer for BET-style material characterization.
Particle Size
Microtrac S3500 Bluewave particle size analyzer for additional distribution measurement capability.
Raw Material Control
| Step | Purpose |
|---|---|
| Small sample testing | Initial screening of raw material suitability. |
| Production line testing | Confirms behavior under real production conditions. |
| Batch stability testing | Verifies consistency across repeated supply and processing. |
| Customer certification | Supports qualification for customer-specific applications. |
| Raw material confirmation | Locks approved supply inputs into controlled production. |
Batch Inspection Focus
Composition And Purity
Purity control ranges from 3N to 5N+ depending on material family, with low-alpha grades for advanced packaging.
Particle Distribution
D10, D50, D90, D100, and top-cut values are managed by grade and application requirements.
Foreign Matter
Incoming and batch tests include foreign matter and magnetic impurity monitoring.
Conductivity
Conductivity is tracked for electronic silica and low-alpha alumina grades where ionic cleanliness matters.
Magnetic Impurities
The source deck lists magnetic impurity targets below 1 ppm for selected product characteristics.
Radioactive Impurities
Low-alpha products can target U+Th levels below 10 ppb or below 1 ppb depending on grade.
Supplier Qualification
3+
Qualified suppliers maintained for supply reliability.
Every batch
Incoming raw materials tested for key quality indicators.
<1 ppm
Magnetic impurity capability stated for selected product targets.
<1 ppb
U+Th target for selected LA5 low-alpha grades.