Hamilton EasyFerm Plus pH Probes (Arc)

Name: Hamilton ARC pH Probes
Brand: Hamilton
SKU: HAM-PH-100
Availability: InStock

Hamilton Arc pH Probes

Hamilton’s Arc pH probes are built to accommodate harsh process conditions while providing top accuracy and precision. Measurement and digitization occur inside the probe, avoiding cable-pick-up noise. A built-in temperature sensor allows automatic temperature compensation, and onboard memory stores calibration points for quick swaps without lengthy recalibration.

Here are the three lines of Arc pH probes we carry and support from Hamilton:

Polilyte Plus Arc : Rugged, industrial pH probe optimized for chemical/petrochemical, utilities, and wastewater applications. Features dual Single Pore junctions and Everef-L reference. Recommended for general-purpose and industrial lab use.
EasyFerm Plus Arc : Biopharma workhorse for frequent autoclave/SIP procedures. Uses pre-pressurized Phermlyte electrolyte, HP-Coatramic diaphragm, and PHI glass for sterilize-in-place/clean-in-place applications.
EasyFerm Bio Arc : Designed for hygienic food & beverage and bioprocess applications. Uses Foodlyte electrolyte (bio-compatibility certified) on the Arc digital platform. Ideal for CIP-sensitive applications.

Electrolyte & reference systems for each probe line:

Polilyte Plus Arc: Polisolve Plus electrolyte + Everef-L reference
EasyFerm Plus Arc: Phermlyte electrolyte + Everef-F (silver-ion barrier) reference
EasyFerm Bio Arc: Foodlyte electrolyte + Everef-F reference

The sterilization capability depends mainly on the glass type:

PHI → Best drift in frequent SIP/autoclave (bioreactors)
HB → Fastest CIP recovery (food/beverage applications)
H → Robust in low-conductivity, utilities, and wastewater
HF → HF-containing media / low temps; no sterilization rating

Standard probe lengths (measured from the bottom of the PG13.5 threaded nut to the tip) are 120 mm, 225 mm, 325 mm, and 425 mm. For beaker applications, 120 mm or 225 mm is usually sufficient. For bioreactors with PG13.5 ports, choose length based on vessel size/depth.

Probe tip length can be chosen for the specific application. — Hamilton Arc probes have fixed dimensions, except the probe tip that comes in various lengths.

Please contact us for application-specific inquiries. Our technical team can help you select the correct probe model, glass type, and sensor length.

Product Details

Weight	0.3 kg
Dimensions	200 × 60 × 40 mm
Probe Type	EasyFerm Plus, EasyFerm Bio, Polilyte Plus
Glass Type	H, HB, PHI, HF
Probe Length	120 mm, 225 mm, 325 mm, 425 mm

Frequently asked questions

What is a Hamilton Arc pH probe?

An Arc probe has the transmitter built into the probe head, so the pH measurement is digitized inside the probe and sent as RS-485 Modbus RTU. That avoids the cable noise that affects analog probes, and each probe stores its own calibration.

Does it work with the Daisy Process?

Yes. Connect the probe to one of the four ports on the Daisy Process with an ARC VP8 cable, and live readings appear in the Daisy Controller Software. A Daisy Process takes up to four Arc probes, and you can daisy-chain another Daisy Process for more.

Should I choose Polilyte Plus, EasyFerm Plus or EasyFerm Bio?

Polilyte Plus Arc is the rugged industrial option for chemical, utilities and wastewater work. EasyFerm Plus Arc is the biopharma workhorse for frequent autoclave and SIP cycles, and EasyFerm Bio Arc is designed for hygienic food and beverage and bioprocess applications, including CIP-sensitive ones.

Which glass type do I need?

PHI glass gives the best drift in frequent SIP and autoclave cycles, HB recovers fastest after CIP, H suits low-conductivity media, utilities and wastewater, and HF is for HF-containing media and low temperatures (no sterilization rating). Polilyte Plus comes in PHI, H, HB and HF, EasyFerm Bio in PHI and HB, and EasyFerm Plus in PHI only.

Which probe length should I order?

Standard lengths are 120, 225, 325 and 425 mm, measured from the bottom of the PG13.5 nut to the tip. For beaker work, 120 mm or 225 mm is usually enough. For a bioreactor with PG13.5 ports, choose the length by vessel depth.