Ensure accurate and reliable water quality testing with this Portable Water Quality Analyzer, designed for convenience and precision in various environments such as home use, hospitals, natatoriums, water treatment plants, laboratories, and aquaculture. Featuring a pen cover design, this compact and durable device is easy to carry and resistant to damage, while maintaining high sensitivity for precise measurements. Key Features: · Portable Pen Cover Design – Offers easy portability and protection against damage without compromising sensitivity, making it ideal for on-the-go water testing. · Versatile Water Quality Measurement – Supports pH, TDS (Total Dissolved Solids), and EC (Electrical Conductivity) testing to cover a wide range of water quality analysis needs. · High-Definition Display Screen – Large digital display delivers quick, clear, and accurate readings for effortless monitoring. · Manual One-Key Automatic Calibration – Simplifies calibration with a user-friendly mode that overcomes inaccuracies caused by long storage times between automatic calibrations. · Superior Sealing Process – The top section is expertly sealed to prevent energy loss and protect the device in wet or humid environments. · Durable and Sensitive Electrodes –  - pH Pen: Equipped with a heat- and cold-resistant electrode probe offering high sensitivity and stable performance.  - TDS & EC Pen: Utilizes a titanium alloy probe known for high hardness, anti-rust properties, and oxidation resistance to ensure longevity and accuracy. Technical Specifications: · Measurement Parameters: pH, TDS & EC · TDS Measuring Range: 0–9990 ppm · TDS Temperature Range: 0.1–80℃ (32–176℉) · TDS Accuracy: ±2% · TDS Probe Material: Titanium Alloy · pH Measuring Range: 0–14 · pH Accuracy: 0.01 · pH Error Margin: ±0.05 · pH Probe Type: Electrode · Power Supply:  - TDS Pen: 1 × CR2032 Button Cell, 3V 240mAh (included)  - pH Pen: 2 × LR44 Button Cells, 3V 240mAh (included) · Package Weight Options: 106g (3.74 oz) / 190g (6.70 oz) depending on model · Package Dimensions:  - Compact: 150 × 30 × 20 mm (5.91 × 1.18 × 0.79 in)  - Larger Set: 200 × 110 × 20 mm (7.87 × 4.33 × 0.79 in) Package Includes: · 1 × pH Test Pen · 3 × Corrective Powder Sachets · 1 × Instruction Manual This Portable Water Quality Analyzer combines precision, durability, and ease of use, making it an essential tool for professionals and enthusiasts who require trustworthy water quality measurements anytime, anywhere.