Preface
Thermo Scientific
Accela PDA Detector Hardware Manual
xix
Solvent Requirements
Many chemical manufacturers provide a line of high-purity or HPLC-grade reagents that are
free of chemical impurities. Routine filtration of all solvents or eluents through a 0.45 or
0.2 micron (or less) fluorocarbon filter before placing them in the solvent reservoir
significantly prolongs the life and effectiveness of the inlet filters, check valves and seals,
injector, and column. Typically, HPLC-grade solvents do not require filtration.
Choose a mobile phase that is compatible with the sample and column that you have selected
for your separation. Remember that some solvents can corrode stainless steel.
Solvent Disposal
Make sure you have a solvent waste container or other kind of drain system available at or
below the benchtop level. Most solvents have special disposal requirements and should not be
disposed of directly down a drain. Follow all governmental regulations when disposing of any
chemical.
High-pressure Systems and Leaks
LC systems operate at high pressures. Because liquids are not highly compressible they do not
store much energy. Accordingly, there is little immediate danger from the high pressures in an
LC system. However, if a leak occurs, correct it as soon as possible. Always wear eye and skin
protection when operating or maintaining an LC system. Always shut down the system and
return it to atmospheric pressure before attempting any maintenance.
