The PH-321M pH Monitor offers accurate and reliable pH measurements with a compact design, making it an essential tool for various applications in aquariums, laboratories, food processing, and more.

Exceptional Features of the PH-321M:

1. Economical Cost: Provides accurate pH measurements at an economical cost, making it accessible for general-purpose applications.

2. Auto Calibration: Supports automatic calibration for pH 4, pH 7, and pH 10, ensuring precise measurements.

3. Compact and Lightweight: Designed with a compact size and lightweight body, making it easy to carry and use in various environments.

4. Backlight LCD Display: Features a backlight LCD display, making it easy to read measurements even in low-light conditions.

5. Wide Application Range: Suitable for a wide range of applications, including aquariums, beverage industry, fish hatcheries, food processing, photography, laboratories, quality control, schools, colleges, swimming pools, and water conditioning.

Technical Specifications:

- Measurement Range: 0 to 14 pH

- Resolution: 0.01 pH

- Accuracy:

  - ± 0.07 pH (pH 5 - pH 9)

  - ± 0.1 pH (pH 4 - pH 10)

  - ± 0.2 pH (pH 1 - pH 3.9, pH 10.1 - pH 13)

- Display: LCD size 31 mm x 31 mm with backlight

- Input Impedance: 10^12 ohms

- Temperature Compensation: Not necessary to make adjustment

- Sampling Time: Approximately 1 second

- Operating Temperature: 0℃ to 50℃ (32℉ to 122℉)

- Operating Humidity: Less than 80% RH

- Power Supply: DC 9V via optional external adapter

- Power Consumption: Approximately 11 mA

- Dimensions: 89 x 57 x 31 mm (3.5 x 2.2 x 1.2 inches)

- Weight: 117 g (0.26 lb)

Optional Accessories:

- pH Electrodes:

  - PE-03: General purpose pH electrode with BNC connector

  - PE-11: High quality pH electrode with BNC connector

- Buffer Solutions:

  - PH-07: pH 7.0 buffer solution

  - PH-04: pH 4.0 buffer solution

- Power Adapter:

  - AP-9VA: DC 9V adapter

    - Input voltage: 100 to 240 ACV, 50/60 Hz

    - Output voltage: Regulation DC 9V/1 Amp. rating max

    - Output plug: Round 2.5 mm dia. plug

  - AP-GTU: Plug converter to convert the input plug of AP-9VA from the Germany type to USA type