YSI 550A Dissolved Oxygen Meter

The 550A dissolved oxygen meter kit with 100' cable includes a handheld display, cable, probe, and carrying case.

The 550A dissolved oxygen meter kit with 50' cable includes a handheld display, cable, probe, and carrying case.

The YSI 550A dissolved oxygen meter with 100' cable features a waterproof, impact-resistant case and innovative field-replaceable DO electrode modules.

The 550A dissolved oxygen meter kit with 25' cable includes a handheld display, cable, probe, and carrying case.

The YSI 550A dissolved oxygen meter with 50' cable features a waterproof, impact-resistant case and innovative field-replaceable DO electrode modules.

The 550A dissolved oxygen meter kit with 12' cable includes a handheld display, cable, probe, and carrying case.

The YSI 550A dissolved oxygen meter with 25' cable features a waterproof, impact-resistant case and innovative field-replaceable DO electrode modules.

The YSI 550A dissolved oxygen meter with 12' cable features a waterproof, impact-resistant case and innovative field-replaceable DO electrode modules.

The flow cell kit includes the standard (203mL) flow cell & single port flow cell adapter.

This small, hard-sided carrying case fits most YSI handheld meters, including models 30, 55, 60, 63, 85, and 550A.

Included with the purchase of a 5563 cable assembly or 550A DO meter, the 559 dissolved oxygen sensor provides reliable DO readings.

Soft-sided carrying case with pre-cut foam insert for the YSI 550A or 556 handheld water quality meters (Included with 556-01 and 556-02).

This form-fitted case fits snugly over the YSI 550A, 556, or 650 for an inexpensive way to protect and carry your investment.

Hands-free harness for the 550A, 556, or 650 display offers convenient carrying in the field.

The ultra c-clamp allows customers to conveniently attach the display to the edge of a table or boat for hand-free operation.