Digital pH Meter (PH-02) — Apex Labs
The Apex Labs Digital pH Meter (PH-02) is a high-precision water quality testing instrument designed for accurate and rapid pH measurement across various applications. Featuring a distinctive yellow-and-black ergonomic housing, this handy pocket-sized meter is ideal for testing drinking water, swimming pools, spas, aquariums, reverse osmosis systems, hydroponics, and educational laboratory solutions. Delivering fast, reliable results without the need for messy color charts or test strips, it ensures optimal water quality management.
*Image for illustration purposes only.
Bulk Procurement & GeM Supply Lines: Apex Labs supplies professional testing instruments supported by official GST-compliant invoices for seamless Input Tax Credit (ITC) tracking. We cater to water treatment plants, agricultural facilities, educational institutions, and commercial enterprises via direct supply or official tender fulfillment through the Government e-Marketplace (GeM) portal.
Technical Specifications
- Brand & Supplier: Apex Labs, Varanasi, UP
- Model Number: PH-02
- Color: Black + Yellow housing
- Measuring Range: 0.00 to 14.00 pH
- Resolution: 0.01 pH
- Accuracy: ±0.01 pH
- Temperature Compensation: 0°C to 80°C (Operating Temp: 0°C to 80°C)
- Calibration: 2 Points (Automatic push-button calibration)
- Body Material: Durable ABS construction
- Power Supply: 1.5V × 2 batteries
Key Features
- Easy to Use: Simply immerse the electrode in the test solution to receive fast, stable readings on the large LCD screen.
- Auto-Calibrated Support: Built-in calibration features using included buffer powders for straightforward digital calibration.
- Fast & Accurate Results: Eliminates reliance on color comparison charts or test strips, delivering precise numerical values.
- Compact & Portable: Lightweight, pocket-friendly design engineered for convenient field and on-the-go testing.
Operation Instructions
- Remove the protective cap from the electrode.
- Rinse the electrode thoroughly with distilled water and dry gently with filter paper.
- Turn on the meter by pressing the “ON/OFF” button.
- Immerse the electrode into the test solution up to the immersion line. Do not submerge past the line.
- Stir gently and wait approximately 30 seconds for the reading to stabilize.
- After use, clean the electrode with pure water, turn off the device, and replace the protective cap.
Calibration Instructions
- Turn on the pH meter and dissolve each buffer powder packet in 250 mL of distilled water.
- Immerse the electrode in the pH 6.86 buffer solution (at 25°C).
- Press the “CAL” button for 5 seconds and release. Wait until the display stops flashing 6.86.
- Rinse the electrode with distilled water and dry it with filter paper.
- Immerse the electrode in the pH 4.00 solution. Press “CAL” for 5 seconds, then press and release immediately a second time. Wait until the display stops flashing 4.00.
- Rinse and dry the electrode. For test solutions above pH 7.0, calibrate using 6.86 and 9.18 solutions following the same method.
Applications
- Water Quality Testing: Drinking water, swimming pools, spas, aquariums, and reverse osmosis (RO) systems.
- Agriculture & Hydroponics: Monitoring nutrient solutions and growing environments.
- Food & Beverage: Quality assurance testing in processing and hydrotherapy applications.
- Education & Research: School science laboratories and general chemical testing.
Package Inclusions
- 1 × Digital pH Meter (PH-02)
- 2 × Calibration Buffer Powders
- 1 × Instruction Manual
- 1 × Protective Retail Storage Box







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