Water Quality MetersYSI 550A Dissolved Oxygen Instrument
The YSI 550A DO instrument features a waterproof (IP-67), impact-resistant case and innovative fieldreplaceable DO electrode modules. Measure dissolved oxygen and temperature simultaneously using YSI’s proven polargraphic technology for oxygen and YSI’s Temperature Precision™ thermistors, the planetwide standard for accuracy. The new PE membranes provide faster response times with less stirring dependence - saving you time with every reading!
• Faster response time!
• Waterproof! Meets IP-67 specifications
• Field-replaceable DO electrode modules
• Screw on cap membranes
• New PE membranes lessen stirring dependence!
• Over 2000 hours of battery life
• Calibrate in either mg/L or % saturation
• User-selectable temperature units (°C or °F)
• 12, 25, 50, and 100 foot cable lengths
• Manual salinity input from 0 to 70 PPT
• Three year instrument warranty, one-year on the DO module