Norell EPR Sample Tubes
Whether you are investigating a free radical reaction at cryo-temperatures, doing laser flash photolysis, or mapping the electronic structure of a ligand complex, your Norell EPR sample tubes are guaranteed to perform flawlessly and consistently in your spectrometer.
Norell EPR tubes produce lower background signals and have better resistance to breakage than competitor brands. Our special annealing process reduces stress points and eliminates the formation of unpaired electrons, thereby reducing background noise along with the benefit of protecting against tube breakage.
Additionally, we have designed a new Teflon closure system around our fire-polished tube ends that prevents sample loss during temperature gradients. Available in both standard and ultra precision, all of your EPR sampling needs are met with Norell EPR Tubes.
All EPR tubes are supplied with Tapered Teflon® Caps.
Suprasil� Quartz EPR Sample Tubes
Recommended for UV catalyzed reactions in the region at and above 190nm. Provides greater reduction of background noise than Natural Quartz and is used primarily in studies where greater signal sensitivity is needed. Supplied with tapered Teflon caps.
| Prod Code | I.D (mm) | Length (mm) | O.D (mm) | Wall (mm) |
|---|---|---|---|---|
| S-5-EPRSQ-178P | 4.20 ± 0.013 | 178 | 4.97 ± 0.013 | 0.38 |
| S-5-EPRSQ-200P | 4.20 ± 0.013 | 200 | 4.97 ± 0.013 | 0.38 |
Suprasil® Quartz EPR Sample Tubes
Recommended for UV catalyzed reactions in the region at and above 190nm. Provides a greater reduction of background noise than natural quartz and is used primarily in studies where greater signal sensitivity is needed. Supplied with tapered Teflon caps.
| Prod Code | I.D (mm) | Length (mm) | O.D (mm) | Wall (mm) |
|---|---|---|---|---|
| S-5-EPRSQ-250S | 4.0 | 250 | 5.0 | 0.50 |
| S-5-EPRSQ-250P | 4.20 ± 0.013 | 250 | 4.97 ± 0.013 | 0.38 |
Natural Quartz EPR Sample Tubes
Norell EPR tubes produce lower background signals and have better resistance to breakage than competitor brands. Our special annealing process reduces background noise along with the benefit of protecting against tube breakage. Additionally, we have designed a new Teflon closure system around our fire-polished tube ends that prevents sample loss during temperature gradients. Available in both standard and ultra-precision. Supplied with tapered Teflon caps.
| Prod Code | I.D (mm) | Length (mm) | O.D (mm) | Pack Size | Wall (mm) |
|---|---|---|---|---|---|
| S-4-EPR-250S | 3.0 | 250 | 4.0 | 5 | 0.50 |
| S-4-EPR-250P | 2.80 ± 0.025 | 250 | 3.98 ± 0.015 | 5 | 0.50 |
| S-5-EPR-250S | 4.0 | 250 | 5.0 | 5 | 0.50 |