This Information Applies To: Agilent G7167A/B Infinity II Multisamplers Issue: The Agilent Multisampler autoreferencing procedure uses predefined positions on the base plate and the sample hotel to calibrate the positioning of the needle parkstation and the sample hotel. Auto referencing is required to compensate for deviations in positioning the needle assembly and the sample tray. The procedure is required after disassembling the system or when you exchange the sample handler, the sample...

This Information Applies To: Agilent G7167x Multisampler modules Issue: Required when: The needle seat is visibly damaged, blocked, or is leaking. Leaks or blockages in the Vialsampler are observed, especially between the needle and needle seat. The limit for the needle interaction EMF counter is exceeded. Replace the needle as part of the yearly maintenance procedures. Steps to follow Tools Required: 8710–0510 - Open-end wrench 1/4 - 5/16 inch Flathead screwdriver...

This Information Applies To: Agilent G7167A/B Multisampler. Issue: Required when: The needle is visibly damaged. Leaks or blockages in the vialsampler are observed, especially between the needle and needle seat. The limit for the needle interaction EMF counter is exceeded. Replace the needle as part of yearly maintenance Steps to follow: Tools Required: 8710–0510 - Open-end wrench 1/4 - 5/16 inch Parts Required: G4267-87201 - Needle assembly OR G4267-87210 -...

This Information Applies To: Agilent LC Pumps Issue If a user suspects that the gradient composition isn’t accurate and causes poor chromatography such as retention time shifts, late, early, no peaks or merging peaks. This article provides a quick way to determine if the pump can accurately proportion the requested composition. The test is done by manually changing the composition and noting the responses. Note: This procedure can only be done with a UV detector, not valid for non-UV systems...

This Information Applies To: Agilent Autosampler modules G1367A, G1367B, G1367C, and G1367D. Issue: The removal and installation of the needle assembly in these older autosampler modules can be tricky and may require patience and the correct technique outlined in the procedure below. Steps to follow: Warning : Especially when toxic or hazardous solvents are used, be aware that fluid may leak out during the procedure. Wear PPE as described on the safety data sheet supplied by...