When organic solvents are used, pump performance can be improved by using spring-loaded check valves. The following pump heads are available for normal phase applications:
- 10 ml pump head (Art. Nr. AHB40BA)
- 50 ml pump head (Art. Nr. AHC20BA)
For Aldehydes, organic acids, phenols, alcohols and ethers (e.g. THF), sealings made from FFKM and Kel-F are recommended. Existing pump heads can be adapted using rebuilt kits:
- FFKM/Kel-F Rebuilt Kit for P2.1S/P4.1S with 10 ml pump head (Art. Nr. A5821-1) or 50 ml pump head (A5821-1)
For water, sapphire pistons are recommended. Existing pump heads can be adapted with the following rebuilt kit:
- Rebuilt kit for 10 ml pump head for aqueous eluents (A5823)
