Understanding Quartz Cuvette Fabrication Types
A practical guide to Standard 80, Sintered 80, Sintered 83, and Molded 83 — how they’re made, how they differ, and which one is right for your application.
🔬 UV-Vis-NIR Coverage
🧪 Quartz Material
📐 0.5 – 100 mm Pathlengths
★ Custom Available
What Do the Names Mean?
Every cuvette in our lineup follows a simple two-part naming convention:
Fabrication Method + Transmission Grade
The first word describes how the cuvette is assembled — the bonding process used to join the quartz walls and optical windows.
The number is the minimum guaranteed light transmission: 80 = > 80% T, and 83 = > 83% T.
A note on “Standard”: The word Standard in Standard 80 refers to the standard outer dimensions (e.g., 12.5 × 12.5 × 45 mm for a 10 mm pathlength cell) — not a quality recommendation. It is the most accessible option in our range.
Four Fabrication Methods at a Glance
The fabrication process is the single biggest factor determining a cuvette’s chemical resistance, thermal limit, and optical quality.
Fig 1 — Cross-section comparison. Red dashes = adhesive bond · Blue solid lines with dots = sintered quartz powder · Thick outline = one-piece molded body.
Detailed Comparison
Full Specification Comparison
| Feature | Standard 80 | Sintered 80 | Sintered 83 | Molded 83 |
|---|---|---|---|---|
| UV-Vis (190 – 2500 nm) | ✔ | ✔ | ✔ | ✔ |
| NIR (260 – 3500 nm) | ✔ | ✔ | ✔ | ✔ |
| Glass Range (350 – 2000 nm) | ✔ | ✔ | ✔ | ✔ |
| Matched Pair Available | ✔ | ✔ | ✔ | ✔ |
| Transmission > 80% | ✔ | ✔ | ✔ | ✔ |
| Transmission > 83% | ✘ | ✘ | ✔ | ✔ |
| Resistant to Acids & Bases | ✘ | ✔ | ✔ | ✔ |
| Resistant to Organic Solvents | ✘ | ✔ | ✔ | ✔ |
| Usable up to 600 °C (1112 °F) | ✘ | ✔ | ✔ | ✔ |
| Usable up to 1200 °C (2192 °F) | ✘ | ✘ | ✘ | ✔ |
| Zero-Variation Reading | ✘ | ✘ | ✘ | ✔ (on request) |
| Fabrication | Glue-assembled | Quartz powder sintered | Quartz powder sintered | Integrally molded |
| Storage | Clean after use | Clean after use | Clean after use | Long-term |
| Material | Quartz Material | |||
Quick Selection Flowchart
Not sure which type to choose? Follow this decision tree:
Fig 2 — Decision flowchart. Follow the questions to find your ideal cuvette type.
Quick Selection Summary
Choose Standard 80 if…
You need an affordable, reliable cuvette for routine aqueous measurements, teaching labs, or single-use applications.
Choose Sintered 80 if…
Your samples involve organic solvents, strong acids, or bases, and you need a durable cell at a reasonable price point.
Choose Sintered 83 if…
You need chemical resistance AND tight optical tolerances for quantitative analysis — pharmaceutical QC, environmental testing, or clinical assays.
Choose Molded 83 if…
You need the absolute best — zero-variation precision, extreme temperature capability (1200 °C), long-term storage stability, and no compromises.
What All Types Share
Regardless of fabrication type, every cuvette from Machined Quartz is manufactured from high-purity quartz material, covers the UV-Vis-NIR spectral range, and is available in standard pathlengths from 0.5 mm to 100 mm. All cells ship with PTFE caps. Custom pathlengths, volumes, and window configurations (two-way, four-way, five-way light) are available on request.
Need Help Choosing the Right Cuvette?
Tell us your instrument model, sample type, and wavelength range — we’ll recommend the ideal cuvette for your application. Custom designs are also available.
Contact UsOr email directly: sales@machinedquartz.com