Needle seat, high pressure, PEEK, 0.12 mm, for Agilent G7167 Multisampler. The needle should be replaced when it becomes bent, burred or blunt, or when it is leaking or plugged. You should suspect a leak if you notice a trail of buffer.

Unfiltered solvents or solvents contaminated with microbial growth can clog solvent inlet filters, reducing the lifetime of the filter and impacting pump performance. Remember to clean or replace the solvent inlet filters at least once every 3 months.

Common to all 1100/1200 pump modules, the purge valve has a gold seal held in place with a plastic cup The most frequently replaced item in the 1100/1200 Series pumps is the purge valve PTFE frit, which can clog with seal material or solvent particulates When replacing the frit,…

Before exchanging the outlet ball valve, try cleaning it in a sonicator by placing the valve in an upright position (onto the plastic cap) in a small beaker with alcohol. Sonicate for 5 to 10 minutes. The 1100/1200 Series binary pump has a different outlet ball valve which includes a sieve.

Maximum sensitivity in the low UV wavelength range High injection precision High retention time reproducibility Flow rates below 0.5 ml/min

Pump seals should be replaced when there are leaks on the bottom of the pump head, when retention times are inconsistent, or when the pressure ripple is unstable. Each time the seals are replaced, the pistons (plungers) should be examined for scratches. Scratched pistons will cause small…