Compact dissolved oxygen meter for water testing Why you need it Provides quick, reliable dissolved oxygen and temperature readings to support healthy aquariums, aquaculture, and field water testing. Helps identify low oxygen levels that can stress aquatic life so you can take corrective action sooner. Portable and easy to use for onsite measurements without complex setup. Key features and what makes it stand out Dual measurement: measures dissolved oxygen (DO) and temperature in C or F. Fast response: delivers stable DO readings in under 30 seconds. Automatic temperature compensation: ATC range 0 to 40 C for more accurate DO results across normal water temperatures. Automatic calibration: simplifies setup so users can get accurate readings with minimal effort. Large backlit LCD: clear display for easy reading in dim environments. Portable design: lightweight and convenient to carry for pond, tank, or field use. Builtin power: 3.7V 1000mAh rechargeable battery, low battery indicator, and automatic power off after 5 minutes of inactivity. Supplied electrolyte: ready for measurement once prepared. Performance and specifications DO measuring range: 0.0 to 20.0 mg/L DO basic error: plus or minus 0.4 mg/L Automatic temperature compensation range: 0 to 40 C Measurement time: under 30 seconds Battery: builtin 3.7V 1000mAh, auto power off in 5 minutes, low battery indication Temperature unit: selectable C or F How it solves common problems Fast, automatic readings reduce the time and skill required to monitor water quality. ATC and automatic calibration minimize user error from temperature fluctuations and sensor drift. Portable battery operation enables testing where fixed systems are not available. Use scenarios Freshwater aquarium monitoring: check dissolved oxygen and temperature after tank changes, when stocking fish, or during routine maintenance. Smallscale aquaculture and pond checks: perform regular spot checks to ensure oxygen levels stay within safe ranges for fish and crustaceans. Field water sampling: bring the meter to streams, reservoirs, or research sites for onsite DO and temperature measurements. What is included and user tips Meter supplied with electrolyte for sensor preparation. Rechargeable internal battery eliminates the need for disposable cells; charge before extended field use. Allow automatic calibration and ATC to stabilize for the most accurate readings. This dissolved oxygen meter offers a compact, userfriendly solution for monitoring DO and temperature with quick results, automatic compensation, and portable power for onsite testing.