Guardian Probe Cetac ASX-200/500/800 Series, with 0.75mm ID Probe Connecting Line (Red). The unique, robust tip design eliminates crushed and damaged tips due to misalignment. Drip-resistance prevents cross contamination of samples during probe movement, especially with oils. Built-in particle filtering holds back particulates from blocking the line. Completely inert design, all PEEK and PTFE construction, the Guardian autosampler probe provides exceptional resistance to strong acids and solvents. The Guardian probe has an ID of 1.0mm, with other interchangeable UniFit sample capillaries available in IDs of 0.3mm, Black (P/N 70-803-1853), 0.5mm, Blue (P/N 70-803-1852), and 1.0mm, Green (P/N 70-803-1721).Replacement probe P/N 70-803-1787. Replacement 0.75mm ID Probe Connecting Line (Red) P/N 70-803-1714. Guardian Probe for Aim Lab & Agilent SPS3/SPS4 Autosamplers, see P/N 70-803-1957.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-900