Manual Valves

Compact and Inert Solvent Selection and Distribution

Hamilton (HV) Plug Valves provide an economical and flexible method of custom-building a fluid flow control system, from a simple on/off valve to a more complex multi-valve arrangement, using a combination of loop and distribution valves. The small valve body with its chemically inert PTFE/CTFE flow path is ideally suited for low pressure (100 psi) applications. All HV Plug Valves allow you to select and interchange a wide variety of fittings, adapters and tubing, including male and female luers, FEP tubing assemblies, and adapters which thread directly into the valve providing an endless variety of valve configurations for any flow application.

DuraCal ORP Buffers

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

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.

Catalog - Laboratory Sensors

Full catalog with technical information and part numbers for the Hamilton laboratory electrode product line.

Guide - pH Measurement

A comprehensive overview of how pH sensors work, as well as the basics of cleaning and calibration.