OxyGuard was founded in order to provide the emerging aquaculture industry with oxygen monitoring equipment. To do this a new oxygen probe was designed. This probe revolutionised dissolved oxygen measurement.

The OxyGuard probe that is sold today is even better than the one introduced in 1987, and a number of variations have been added. OxyGuard now offers a wide range of probes that provide reliable and accurate oxygen measurement in an even wider range of uses.

The Standard Probe is very robust and extremely stable indeed.

The Model 420 is essentially a Standard Probe with a built-in 2-wire 4-20 mA transmitter.

The Model 840 consists of a Standard Probe and separate 2-wire 4-20 mA transmitter with display.

The DO Profile is a small fast-acting probe designed to measure whilst being moved through the water.

The Ocean probe is a small probe designed to measure at great depths.

The Handy probe is used with OxyGuard Handy hand-held meters, but can also be used elswhere a small-size probe is needed.

The Mini probe is even smaller - small enough to be put into a bottle of wine or similar.

OxyGuard also manufacture oxygen probes for PPB level dissolved oxygen, for use in EX classified areas and for other special uses - often to customer specification. Contact OxyGuard if you have a special requirement.

OxyGuard Temperature probes are designed to provide reasonably priced probes with reasonable accuracy.