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Hamilton offers a complete range of patented pH / ORP buffer solutions and conductivity standards. These products are specifically designed for Hamilton sensors and feature high stability and industry leading shelf life.

Duracal ORP Buffers

Hamilton ORP buffers are stable for two years. You can always rely on them even if they have been used.
Hamilton pH Buffer Soltuions

Duracal pH Buffers

Patented buffer solutions provide pH stability of up to five years. High buffering capacity provides rapid and stable calibration.

Conductivity Standards

Stability from 1 to 3 years respectively and conductivity ranges from 1.3 µS/cm to 100 mS/cm


Hamilton's knowledge base provides a range of explanatory articles, frequently asked questions, and document downloads.
Syringe Custom Built

Work with R&D engineers to customize Hamilton parts

Hamilton's "Custom Built" program puts you directly in contact with a Hamilton R&D Engineer to discuss your application and product needs. The engineer will point you to a standard solution or propose a customized solution to meet your needs.

Talk to an engineer