High altitudes lower boiling points. So if you are recycling solvents much above sea level then your solvent recycling program may not work as intended. Not to worry. It is easy to make adjustments to your solvent recycling programs to compensate for this effect. The table below shows how much you must decrease the temperatures in your solvent recycling program depending on your altitude.
| Altitude Above Sea Level | Pressure | Decrease in Boiling Point of n-Heptane 98.4 ºC | |
| Feet | Meters | mm Hg Absolute | ºC |
| 0 | 0 | 760.0 | 0 |
| 500 | 153 | 746.3 | 0.8 |
| 1000 | 305 | 733.0 | 1.4 |
| 1500 | 458 | 719.6 | 2.0 |
| 2000 | 610 | 706.6 | 2.6 |
| 2500 | 763 | 693.9 | 3.2 |
| 3000 | 915 | 681.2 | 3.9 |
| 3500 | 1068 | 668.8 | 4.5 |
| 4000 | 1220 | 656.3 | 5.1 |
| 4500 | 1373 | 644.4 | 5.7 |
| 5000 | 1526 | 632.5 | 6.3 |
| 6000 | 1831 | 609.3 | 7.6 |
| 7000 | 2136 | 586.7 | 8.8 |
| 8000 | 2441 | 564.6 | 10.1 |
| 9000 | 2746 | 543.3 | 11.3 |
| 10,000 | 3050 | 522.7 | 12.5 |
| 15,000 | 4577 | 429.0 | 18.7 |
| 20,000 | 6102 | 349.5 | 24.8 |
