Vent Hole Punch for XRF Sample Cups
Most sample cup applications generally require a means for venting to equalize pressure differentials within the sample cup and sample chamber. The importance of venting is to maintain a flat sample plane-to-excitation source distance to avoid variations in x-ray data. A longer distance implies lower than actual analyte concentrations; shorter distances insinuate higher concentrations.
The majority of XRF Sample Cups incorporate a thermoplastic seal that is integrated in the sample cup at the manufacturing stage. Puncturing a hole through the seal establishing a path for entrapped air to escape during evacuation of the system to avoid distended sample planes attributed to the positive pressure within the sample cup. Similarly, in helium atmospheres a positive pressure develops against the thin-film window resulting in a concaved sample plane. Venting resolves these problems.
The Vent Hole Punch is designed to conveniently puncture uniform holes of the appropriate diameter through the thermoplastic seals. It is palm held and self-centering over thermoplastic seals for 32, 40 and 43 mm diameter sample cups.
Simple, Convenient and Effective To Use
- Place over assembled sample cup.
- Depress downward to puncture thermoplastic seal.
Specifications and Ordering Information
| CATALOG NUMBER | DESCRIPTION |
|---|---|
| 1350 | Vent Hole Punch |
