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Hamilton has been a leader in dissolved oxygen measurement for many years. The polarographic (amperometric) DO sensor product line includes the hygienic 12 mm sensor designs suited for applications in the bio-pharmaceutical, food, beverage and water treatment markets.


The OxyFerm polarographic dissolved oxygen sensor is specifically suited for hygienic applications in the pharmaceutical industry. The OxFerm CIP is designed to withstand frequent CIP cleaning procedures.

OxyGold B

OxyGold B polarographic DO sensors provide a great general purpose oxygen sensor for applications with carbon dioxide and other entrained acidic gases.

OxyGold G

OxyGold G polarographic DO sensors can measure down to parts-per-billion trace oxygen levels.


Oxysens polarographic dissolved oxygen sensors offer a simple, economical solution for measurements in fish farms, water treatment, and algae ponds.


OxyFermOxyGold BOxyGold GOxysens
Measuring Range 10 ppb - 40 ppm (DO) 8 ppb - 40 ppm (DO) 1 ppb - 40 ppm (DO) 40 ppb - 40 ppm (DO)
Response Time t98% < 60 s at 25 °C
from air to nitrogen
< 60 s at 25 °C
from air to nitrogen
< 60 s at 25 °C
from air to nitrogen
< 60 s at 25 °C
from air to nitrogen
Pressure Range 0 – 4 bar 0 – 12 bar 0 – 12 bar 0 – 4 bar
Hygienic Aspects Autoclavable, CIP, SIP CIP Autoclavable, CIP, SIP --
Electrolyte Oxylyte Oxylyte B Oxylyte G Oxylyte
Surface Quality Ra < 0.4 µm (N5) Ra < 0.4 µm (N5) Ra < 0.4 µm (N5) Ra < 0.8 µm (N6)
Current in Air 40 - 80 nA 180 - 500 nA 180 - 500 nA 40 - 80 nA
Material Stainless Steel 1.4435 Stainless Steel 1.4435 Stainless Steel 1.4435 Stainless Steel 1.4435
Polarization Voltage -670 mV 0 mV -670 mV -670 mV


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