Provides instant measurement and simple operation: Enables quick and straightforward pH measurements, ideal for users of all skill levels. 50 Ohm BNC type connector. Replaceable pH electrode is easy to calibrate. Reliable, stable, and portable: Guarantees consistent and dependable pH measurements, suitable for both stationary and on-the-go applications. Longer electrode body with 300cm (E-312) and 200cm (E-314) extra-long cable options. Measuring range: 0–14 pH. Measuring temperature: 5°C to 60°C. Zero potential: 7 ± 0.5 pH at 25°C. Percentage theoretical slope (PTS): ≥98.5% at 25°C. Internal resistance: ≤250 MΩ at 25°C. Alkali error: 0.2 pH (in 1 mol/L Na+, pH 14) at 25°C. Response time: ≤1 minute. Product appearance and printed text may vary slightly by batch; this does not affect functionality. Color: As shown in image. Material: Metal. Package Contents: 1 x pH Sensor Probe Note: Other items not included. Lighting and display differences may cause slight color variations between image and actual item. Measurement error: ±1–3 cm.