The 2003 Polarographic Dissolved Oxygen sensor comes with 5908 Cap Membrane Kit (1.25 Mil PE membranes) for fast response with reliable readings. Convenient scew-on cap membranes make membrane changes simple and easy.

One-year sensor warranty.

The 2003 Polarographic DO Sensor is compatible with these YSI Handheld Instruments*:
• ProQuatro
• Pro Plus
• Pro20
• Pro20i
• Pro1020
• Pro2030

*Requires Cable/Probe Assembly.

Compatible Cables include:
• 60520 (DO)
• 6052030 (DO/conductivity)
• 6051020 (DO/ISE)
• 605790 Quatro (DO/conductivity/ISE/ISE)

Compatible Membranes include:
• 5906 (1.0 Mil Black Membranes)
• 5908 (1.25 Mil Yellow Membranes - included)
• 5909 (2.0 Mil Blue Membranes)