The Apera Instruments SX751 is a versatile, portable multi-parameter meter designed for laboratory-quality measurements of pH, dissolved oxygen (DO), redox potential (ORP), conductivity (EC), TDS, salinity, and resistivity in general water solutions. Its rugged, dust- and water-resistant (IP57) design makes it ideal for use in harsh field environments.

The SX751 includes a memory function capable of storing up to 400 data sets, which can be easily retrieved for analysis. Its accurate and fast measurements are made possible by high-quality electrodes, such as the 201T-S pH/Temp. electrode with lithium glass membrane, the 2301T-S BPB conductivity electrode, and the DO500 polarographic DO electrode, each providing reliable, fast results.

For DO measurements, the DO500 electrode is polarized within just 5 minutes, and the integrated automatic temperature and salinity compensation ensures precise results. The 301Pt-S ORP electrode, with its high-quality platinum sensor, provides accurate ORP measurements without the need for calibration.

Key Features:

✔ Multi-parameter measurement – pH, DO, ORP, EC, TDS, salinity, resistivity
✔ Fast and accurate readings – Integrated digital filter technology for enhanced precision
✔ Memory function – Stores up to 400 data sets
✔ Field-ready design – IP57 dust and water resistance
✔ Replaceable electrodes – Includes 3 replacement membrane caps for the DO500 electrode
✔ Calibration made easy – Quick 1-3 point pH calibration and 1-point EC calibration
✔ Complete test kit – Supplied with all necessary accessories in a rugged carrying case
✔ 3-year manufacturer’s warranty (6 months for electrodes)

Complete Set Includes:

• SX751 portable pH/DO/ORP/EC/TDS/salinity/resistivity meter

• 201T-S pH/Temp. electrode

• 301Pt-S ORP electrode

• 2301T-S conductivity/Temp. electrode

• DO500 polarographic DO electrode

• Calibration solutions: pH 4.00, pH 7.00, pH 10.01 (50 ml each)

• 1413 μS Conductivity calibration solution

• DO502 electrolyte solution for refilling

• 3x DO503 membrane caps

• Polishing paper for electrode cleaning

• Manual

• 2x AA batteries

• Screwdriver

• Robust carrying case