Date: 24-NOVEMBER-2014 Last Updated: 4-SEPTEMBER-2026
Understanding Pressure Ratings for Stainless Steel HPLC Tubing
Selecting the correct tubing for an HPLC or UHPLC system requires consideration of both internal diameter and pressure rating. As tubing internal diameter increases, the maximum allowable operating pressure generally decreases due to reduced wall thickness. Understanding these pressure limitations helps ensure safe system operation while maintaining the desired balance between system volume, backpressure, and chromatographic performance.
The pressure ratings shown below provide recommended maximum operating pressures for MICROSOLV stainless steel tubing under typical HPLC and UHPLC conditions. These values can be used as a reference when selecting tubing for analytical, LC-MS, semi-preparative, and high-pressure liquid chromatography applications.
| MTC part no. | O.D. (in.) | I.D. (in.) | I.D. Tolerance (in.) | Length (cm) | Max. Pressure (psi) |
| 49405-05 | 1/16" | 0.005 | ±0.001 | 5 | 21,600 |
| 49405-10 | 1/16" | 0.005 | ±0.001 | 10 | 21,600 |
| 49405-20 | 1/16" | 0.005 | ±0.001 | 20 | 21,600 |
| 49405-30 | 1/16" | 0.005 | ±0.001 | 30 | 21,600 |
| 49405-50 | 1/16" | 0.005 | ±0.001 | 50 | 21,600 |
| 49405-100 | 1/16" | 0.005 | ±0.001 | 100 | 21,600 |
| 49407-05 | 1/16" | 0.007 | ±0.001 | 5 | 20,900 |
| 49407-10 | 1/16" | 0.007 | ±0.001 | 10 | 20,900 |
| 49407-20 | 1/16" | 0.007 | ±0.001 | 20 | 20,900 |
| 49407-30 | 1/16" | 0.007 | ±0.001 | 30 | 20,900 |
| 49407-50 | 1/16" | 0.007 | ±0.001 | 50 | 20,900 |
| 49407-100 | 1/16" | 0.007 | ±0.001 | 100 | 20,900 |
| 49410-05 | 1/16" | 0.010 | ±0.001 | 5 | 19,700 |
| 49410-10 | 1/16" | 0.010 | ±0.001 | 10 | 19,700 |
| 49410-20 | 1/16" | 0.010 | ±0.001 | 20 | 19,700 |
| 49410-30 | 1/16" | 0.010 | ±0.001 | 30 | 19,700 |
| 49410-50 | 1/16" | 0.010 | ±0.001 | 50 | 19,700 |
| 49410-100 | 1/16" | 0.010 | ±0.001 | 100 | 19,700 |
| 49420-05 | 1/16" | 0.020 | ±0.001 | 5 | 15,800 |
| 49420-10 | 1/16" | 0.020 | ±0.001 | 10 | 15,800 |
| 49420-20 | 1/16" | 0.020 | ±0.001 | 20 | 15,800 |
| 49420-30 | 1/16" | 0.020 | ±0.001 | 30 | 15,800 |
| 49420-50 | 1/16" | 0.020 | ±0.001 | 50 | 15,800 |
| 49420-100 | 1/16" | 0.020 | ±0.001 | 100 | 15,800 |
| 49430-05 | 1/16" | 0.030 | ±0.001 | 5 | 12,000 |
| 49430-10 | 1/16" | 0.030 | ±0.001 | 10 | 12,000 |
| 49430-20 | 1/16" | 0.030 | ±0.001 | 20 | 12,000 |
| 49430-30 | 1/16" | 0.030 | ±0.001 | 30 | 12,000 |
| 49430-50 | 1/16" | 0.030 | ±0.001 | 50 | 12,000 |
| 49430-100 | 1/16" | 0.030 | ±0.001 | 100 | 12,000 |
| 49440-05 | 1/16" | 0.040 | ±0.001 | 5 | 8,100 |
| 49440-10 | 1/16" | 0.040 | ±0.001 | 10 | 8,100 |
| 49440-20 | 1/16" | 0.040 | ±0.001 | 20 | 8,100 |
| 49440-30 | 1/16" | 0.040 | ±0.001 | 30 | 8,100 |
| 49440-50 | 1/16" | 0.040 | ±0.001 | 50 | 8,100 |
| 49440-100 | 1/16" | 0.040 | ±0.001 | 100 | 8,100 |
| 49405-Coil-4M | 1/16" | 0.005 | ±0.001 | 400 | 21,600 |
| 49405-Coil-10M | 1/16" | 0.005 | ±0.001 | 1000 | 21,600 |
| 49407-Coil-4M | 1/16" | 0.007 | ±0.001 | 400 | 20,900 |
| 49407-Coil-10M | 1/16" | 0.007 | ±0.001 | 1000 | 20,900 |
| 49410-Coil-4M | 1/16" | 0.010 | ±0.001 | 400 | 19,700 |
| 49410-Coil-10M | 1/16" | 0.010 | ±0.001 | 1000 | 19,700 |
| 49420-Coil-4M | 1/16" | 0.020 | ±0.001 | 400 | 15,800 |
| 49420-Coil-10M | 1/16" | 0.020 | ±0.001 | 1000 | 15,800 |
| 49430-Coil-4M | 1/16" | 0.030 | ±0.001 | 400 | 12,000 |
| 49430-Coil-10M | 1/16" | 0.030 | ±0.001 | 1000 | 12,000 |
| 49440-Coil-4M | 1/16" | 0.040 | ±0.001 | 400 | 8,100 |
| 49440-Coil-10M | 1/16" | 0.040 | ±0.001 | 1000 | 8,100 |