Standard UV-Vis Cuvette with PTFE Stopper
Sealed cuvette for volatile or sensitive samples in UV-Vis spectrophotometry
Description
Cuvette Selection Guide
Description
These standard cuvettes are designed for UV-Vis spectrophotometry and feature two optical clear walls for accurate absorbance measurements.
Equipped with a PTFE stopper, they provide effective sealing, making them ideal for volatile, toxic, or air-sensitive samples.
Available in quartz and optical glass materials, supporting a wide wavelength range from UV to visible applications.
Key Features
- Two optical clear walls for precise light transmission
- PTFE stopper for secure sealing and reduced evaporation
- Ideal for volatile or hazardous samples
- Compatible with most UV-Vis spectrophotometers
- Available in multiple path lengths (1–100 mm)
- Quartz version supports UV range down to 190 nm
When should you choose a stopper cuvette?
- When working with volatile solvents (e.g. ethanol, acetone)
- When samples are sensitive to air exposure
- For longer measurement durations
- When minimizing evaporation is critical
Fused Cells – for All Type of Solvents
The quartz/glass walls of the cells are fused together at high temperature and are suitable for usage in all type of solvents.
|
Outside Dimension (mm) |
Path Length (mm) |
Indisde Width (mm) |
Volume (mL) |
Serial Number | ||
|
ES-Quartz 190-2500 nm |
IR-Quartz 250-3500 nm |
Optical Glass 340-2500 nm |
||||
| 45 × 12.5 × 3.5 | 1 | 10 | 0.35 | 21-Q-1 | 21-I-1 | 21-G-1 |
| 45 × 12.5 × 4.5 | 2 | 10 | 0.7 | 21-Q-2 | 21-I-2 | 21-G-2 |
| 45 × 12.5 × 7.5 | 5 | 10 | 1.7 | 21-Q-5 | 21-I-5 | 21-G-5 |
| 45 × 12.5 × 12.5 | 10 | 10 | 3.5 | 21-Q-10 | 21-I-10 | 21-G-10 |
| 45 × 12.5 × 22.5 | 20 | 10 | 7.0 | 21-Q-20 | 21-I-20 | 21-G-20 |
| 45 × 12.5 × 32.5 | 30 | 10 | 10.5 | 21-Q-30 | 21-I-30 | 21-G-30 |
| 45 × 12.5 × 42.5 | 40 | 10 | 14.0 | 21-Q-40 | 21-I-40 | 21-G-40 |
| 45 × 12.5 × 52.5 | 50 | 10 | 17.5 | 21-Q-50 | 21-I-50 | 21-G-50 |
Glued Cells – for Aqueous (Water-Based) Solvents Only
The quartz/glass walls of the cells are glued together and are recommended for usage in aqueous solvents only.
|
Outside Dimension (mm) |
Path Length (mm) |
Indisde Width (mm) |
Volume (mL) |
Serial Number | ||
|
ES-Quartz 190-2500 nm |
IR-Quartz 250-3500 nm |
Optical Glass 340-2500 nm |
||||
| 45 × 12.5 × 3.5 | 1 | 10 | 0.35 | Q-111 | I-111 | G-111 |
| 45 × 12.5 × 4.5 | 2 | 10 | 0.7 | Q-112 | I-112 | G-112 |
| 45 × 12.5 × 7.5 | 5 | 10 | 1.7 | Q-113 | I-113 | G-113 |
| 45 × 12.5 × 12.5 | 10 | 10 | 3.5 | Q-114 | I-114 | G-114 |
| 45 × 12.5 × 22.5 | 20 | 10 | 7.0 | Q-115 | I-115 | G-115 |
| 45 × 12.5 × 32.5 | 30 | 10 | 10.5 | Q-116 | I-116 | G-116 |
| 45 × 12.5 × 42.5 | 40 | 10 | 14.0 | Q-117 | I-117 | G-117 |
| 45 × 12.5 × 52.5 | 50 | 10 | 17.5 | Q-118 | I-118 | G-118 |
| 45 × 12.5 × 102.5 | 100 | 10 | 35.0 | Q-119 | I-119 | G-119 |
How to Choose the Right Cuvette for Your Application
🧠 1. Select by Measurement Type
| Application | Recommended Cuvette |
|---|---|
| UV-Vis Absorbance | 2 Optical Windows (Standard Cuvette) |
| Fluorescence | 4 Optical Windows |
| Low signal / stray light sensitive | Black Wall Cuvette |
| Routine / high-throughput | Disposable Cuvette |
🌈 2. Select by Material (Critical for Wavelength Range)
| Material | Wavelength Range | Application |
|---|---|---|
| Quartz | 190 – 2500 nm | UV + Visible (recommended) |
| Optical Glass | 340 – 2500 nm | Visible only |
| IR Quartz | >2200 nm | Infrared |
👉 Important:
Quartz cuvettes are required for UV measurements below 340 nm.
🧪 3. Select by Sample Volume
| Type | Volume | Typical Use |
|---|---|---|
| Standard Cell | ~3.5 mL | General applications |
| Micro Cell | <1 mL | Limited or expensive samples |
| Flow Cell | Continuous | Online / process monitoring |
📏 4. Select by Path Length
| Path Length | Application |
|---|---|
| 10 mm | Standard measurements |
| 1–5 mm | High concentration samples |
| >10 mm | Low concentration detection |
🔒 5. Choose the Right Closure Type
| Type | Best For | Sealing Level |
|---|---|---|
| Lid | Routine testing | Low |
| Stopper | Volatile or sensitive samples | Medium |
| Screw Cap | Storage / long-term testing | High |
🧩 Quick Selection Guide
👉 Use this as a shortcut:
- Need UV measurement (<340 nm)? → Quartz cuvette
- Doing standard absorbance? → 2 optical windows
- Sample evaporates easily? → Stopper or screw cap
- Sample volume is small? → Micro cell
- Measuring fluorescence? → 4 optical windows
💡 Why Choose Our Cuvettes
- High optical clarity for accurate measurements
- Precision-polished optical windows
- Wide compatibility with major spectrophotometer brands
- Available in multiple materials, sizes, and configurations
- Custom designs available upon request
📩 Need Help Selecting?
Not sure which cuvette fits your application?
Contact us with your wavelength range, sample type, and instrument model — our team will recommend the most suitable option.
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