Overview
Both MRQ™ and Max Recovery™ autosampler vials are engineered to maximize sample recovery without the need for inserts, making them ideal for precious or limited-volume samples. However, their design differences make each better suited for specific autosampler configurations and analytical needs.
Key Differences
1. Needle Compatibility
-
MRQ™ Vials
Designed for compatibility with a wider range of autosamplers, including those with:- Side-port needles (e.g., Waters™ WISP®)
- Bottom-port needles (e.g., Waters™ Alliance®, Acquity®)
-
Max Recovery™ Vials
Optimized specifically for bottom-port needle autosamplers, such as:- Waters™ Alliance®
- Waters™ Acquity®
- Other brands using bottom-entry needle designs
Choosing the correct vial based on your autosampler’s needle type ensures optimal sample access and minimizes residual volume.
2. Total Volume Capacity
- MRQ™ Vials: 1.2 mL (1,200 µL)
- Max Recovery™ Vials: 1.8 mL (1,800 µL)
This difference in total volume may influence your choice depending on:
- Sample availability
- Required injection volume
- Headspace considerations for concentration-sensitive analyses
3. Headspace Considerations
The amount of headspace (air above the liquid) in the vial after filling can impact:
- Volatile compound stability
- Concentration accuracy
- Evaporation rates
If your method is sensitive to headspace volume, consider how much sample you plan to use and select the vial that best aligns with your volume and recovery needs.
Summary
| Feature | MRQ™ Vial | Max Recovery™ Vial |
|---|---|---|
| Needle Compatibility | Side-port & bottom-port | Bottom-port only |
| Total Volume | 1.2 mL | 1.8 mL |
| Best Use Case | Versatile autosampler support | Maximum volume with bottom-port |
| Insert Required | No | No |
Click HERE for ordering information and pictures of the MRQ™ autosampler vials.