The standard H0 / H3 cap is the default options for most applications. The H2 / H4 cap has a convex design to minimize bubble accumulation and a PTFE membrane that increases the chemical resistance. Learn more about Hamilton's optical dissolved oxygen sensor cap options for different applications in our Knowledge Base article.

Item # Description
10107102 ODO Cap L1
243536 ODO Cap H20
243515 ODO Cap H0
243505 ODO Cap H2
243660 ODO Cap H2 FFKM
10068400 ODO Cap H3
10078261 ODO Cap H4
243530 ODO Cap L0


Hamilton's knowledge base provides a range of explanatory articles, frequently asked questions, and document downloads.
  • Catalog - Process Analytics

    Download the Process Analytics sensor catalog to learn about the complete offering of Hamilton process sensors and accessories.
  • Brochure - Optical Dissolved Oxygen

    Download the dissolved oxygen brochure to explore the many benefits of making the switch to optical oxygen measurement.
  • Brochure - Optical Dissolved Oxygen Sensors for Biopharma

    Hamilton extensively investigated the effects of the bioprocess on measurement accuracy. Analysis of sensor aging, chemical attack, and physical damage yielded the necessary understanding for development of a next generation VisiFerm which reduces the need for frequent calibration.

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