Support for your solvent purification or dispensing system.

Refilling requires removing the existing columns and taking them out of service while PPT processes them. Replacement columns provide a separate option when you need to plan the change around lab use.

1. Identify the solvent and valve-handle color assigned to each column.
2. Use PPT’s column removal and replacement guide and video for the changeout procedure.
3. Confirm refill or replacement arrangements with PPT before shipping columns. Current pricing and shipping details need to be confirmed.

PPT’s existing guidance recommends HPLC- or ACS-grade solvent with water content below 100 ppm, generally unstabilized. Some solvents have specific requirements.

Check the solvent grade, water-content specification, and stabilizer information before use. DCM is an exception to the general unstabilized guidance; confirm the correct product and stabilizer with PPT for your application.

Inspect the keg, lid, and seal for corrosion, contamination, or damage. A leak at the lid may require replacing the O-ring or seal, the lid, or the keg itself.

1. Check the condition of the lid seal and sealing surfaces, especially if the problem started after refilling.
2. Use the documented leak-checking procedure to identify the affected connection or seal.
3. For visible corrosion, send PPT photos to assess whether the keg needs replacement. Confirm cleaning methods and solvent compatibility before attempting to clean a corroded keg.

After saturating the columns, PPT’s existing guidance calls for at least 48 hours before testing. Purge approximately a flask’s volume before taking the test sample, following the operating procedure for your system.

If results remain outside your requirements, check the incoming solvent specification and the column history. Share the test result and time since saturation with PPT.

Start with the argon supply gauge and the connections between the tank, keg, and system. Use the pressure settings specified for your equipment and solvent.

1. Check the argon supply pressure against your system instructions.
2. Confirm that the bottom valve on the back column is closed when not in use; the existing guide identifies solvent draining back into the keg as a possible cause.
3. Check the final filter for restriction. Follow your system’s procedure for cleaning or replacing it.
4. If the issue began after refilling, check the keg O-ring and lid seal for leakage using the documented procedure.