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. Highly reliable, stable, and portable: Ensures consistent and dependable pH measurements, suitable for both stationary and field applications. Extended electrode body with 300cm (E-312) or 200cm (E-314) extra-long cable. Measuring range: 0–14 pH. Measuring temperature range: 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 labeling may vary slightly by batch; this does not affect performance. Color: As shown in image. Material: Metal. Package includes: 1 x pH Sensor Probe. No additional items included. Note: Lighting conditions and display settings may cause slight variations in color between the image and the actual item. Measurement error tolerance: ±1–3 cm.