Sper Scientific Waterproof Dissolved Oxygen Meter Pen 850045 - Accurate DO & Temperature Readings, IP65 Rated, Auto Temp Compensation - for Environmental Testing, Aquariums, Labs and Wastewater

Sper Scientific dissolved oxygen pen. Dissolved oxygen analysis is routinely performed in environmental testing, labs, industrial and municipal waste water, aquariums and fish hatcheries. This Sper Scientific dissolved oxygen pen is easy to carry, simple to calibrate and use. Sufficient for many surface dissolved oxygen measurements. Includes a soft carrying case with belt loop, two spare probe heads, electrolyte and 4 AAA batteries. IP-67 Waterproof. Simple one-hand operation. Automatic temperature compensation. Automatically calibrates to air. Easy to replace pop-off probe heads. Simultaneous display of dissolved oxygen and temperature. Hold and minimum/maximum recall. Grade level: middle-high school. No allergens. No choke hazard. 0 to 20.0 mg/L range; 0.1 mg/L resolution; +/-0.4 percent mg/L accuracy. 32 to 122 degree F range; 0.1 degree F resolution; +/-1.5 degree F accuracy. 0 to 50 degree C range; 0.1 degree C resolution; +/-0.8 degree C accuracy. CE Approved, RoHS Compliant.

• ACCURATE TESTING: Measures dissolved oxygen (0–20 mg/L) and oxygen percentage in air (0–100%) with high precision. Ideal for environmental testing, labs, aquariums, fish hatcheries, and wastewater management.
• WATERPROOF: Built to withstand tough conditions with IP65-rated waterproofing, ensuring reliability in wet environments like aquariums or fieldwork.
• ADVANCED FEATURES: Polarographic probe with a built-in temperature sensor offers automatic temperature compensation (32–122°F / 0–50°C) for consistent accuracy in every reading.
• EASY TO USE: Compact and portable with one-hand use, it features a clear display for simultaneous dissolved oxygen and temperature readings, plus data hold, max, and min memory recall.
• COMPLETE SET: Comes complete with 2 spare probe heads, electrolyte solution, 4 AAA batteries, and a soft carrying case with a belt loo - perfect for professionals on the go.