Digital Portable pH-DO Meter

The Apera SX725 Portable pH/DO Meter Kit is designed for lab-grade measurement of pH and DO (dissolved oxygen) in the field, suitable for general water solutions’ applications such as water treatment, groundwater, surface water, hydroponics, environmental monitoring, aquaculture, aquarium, beverage making, etc.

BASIC FEATURES:
- Intelligent functions –– auto. calibration, auto. temperature compensation, self-diagnosis, data logging, auto. power off, and more
- Digital filter technology –– enhance the meter’s response time and measurement accuracy
- Automatic electrode recognition –– the meter automatically switches to the right parameter mode according to the connected electrode
- Data logging –– 300 sets of data storage and recall
- Built tough –– IP57 water-resistant structure, ideal for use in harsh environments


pH Features
- Built with lithium glass membrane and fiber ceramic junction, the 201T-S pH/temp. electrode provides the foundation for quick response and accurate pH readings
- 1 to 3 points of quick auto. calibration, recognizing up to 13 kinds of pH buffers
- The self-diagnosis function helps you understand common problems and how to fix them
- With the 8-pin to BNC converter (sold separately), a variety of LabSen pH electrodes can be connected to meet the testing needs of specialized applications


DO Features
- Equipped with Apera's DO500 polarographic DO electrode, featuring quick response and integrated temperature and salinity sensors
- Replaceable DO membrane cap (3 replacement membrane caps and an inner solution refill are included in the kit)
- Regular electrode polarization only takes 5 minutes. Measurement reaches 90% response within 30 seconds
- Automatic compensation for temperature and salinity; manual compensation for barometric pressure

SPECIFICATIONS:
pH:
Measurement range: (-2.00 to 19.99) pH
Resolution: 0.1/0.01 pH
Accuracy: ±0.01pH±1 digit
Input current: ≤2×10-12 A
Input impedance: ≥1×1012 Ω
Temp. compensation range: (0 to 100) ˚C (automatic)
DO:
Measurement range: (0 to 19.99) mg/L (ppm); (0 to 200.0) %
Resolution: 0.1/0.01 mg/L (ppm) 1/0.1%
Accuracy: ±0.30 mg/L (ppm)
Response time: ≤30 seconds (25˚C, 90% response)
Temp. compensation range: (0 to 45) ˚C (automatic)
Salinity compensation range: (0 to 45) ppt (automatic)
Barometric pressure compensation range: (66 to 200) kPa (manual)
Automatic calibration: One or two points at 100% (water-saturated air) and 0%
Electrode type: Polarographic
OTHER:
Data storage: 300 sets
Data content: Serial number, measurement value, measurement unit, and temperature
Power Supply: Two AA alkaline batteries (1.5V x2)

Comes as a complete test kit in a rugged carrying case for convenient field test