Hanna HI98107 pHep Handheld Waterproof Pocket pH Tester User Manual

1. Introduction

The Hanna HI98107 pHep is a handheld, waterproof pocket pH tester designed for accurate and reliable pH measurements in various applications, including aquariums, pools, and ponds. This device features a large multi-level LCD that displays both pH and temperature readings simultaneously. It offers a 0.1 pH resolution with an accuracy of ±0.1 pH across a range of 0.0 to 14.0 pH. An exposed temperature sensor ensures rapid automatic temperature compensation for precise readings. This manual provides essential instructions for the proper setup, operation, and maintenance of your HI98107 pHep tester.

2. What's in the Box

Upon unpacking your Hanna HI98107 pHep, please verify that all items are present and in good condition:

• Hanna HI98107 pHep pH Tester
• Cuvettes (sample vials)
• Reagent starter kit
• Battery (pre-installed or separate)
• Instructions and quick start guide

3. Product Overview

The HI98107 pHep is engineered for ease of use and durability. Familiarize yourself with its key components:

Figure 1: Front View of Hanna HI98107 pHep pH Tester. This image displays the main body of the pH tester, showing the multi-level LCD screen, the power button, and the calibration (CAL) button. The screen indicates a pH reading of 7.0 and a temperature of 24.9 °C. The device is red and black, with 'Hanna' at the top and 'pHep' at the bottom.

• LCD Display: Shows pH and temperature readings, stability indicator, calibration tag, and battery percentage.
• Power Button: Used to turn the device on and off.
• CAL Button: Initiates the calibration process.
• pH Electrode: Located at the bottom, it features a unique reference cell design with a cloth junction for improved performance.
• Temperature Sensor: Exposed sensor for rapid temperature compensation.

Figure 2: Electrode End of Hanna HI98107 pHep pH Tester. This image provides a close-up view of the bottom end of the pH tester, revealing the pH electrode and the exposed temperature sensor. The protective cap has been removed to show the sensing elements.

4. Setup

4.1. Battery Installation/Replacement

The HI98107 operates on a battery, typically a CR2032 lithium-ion battery. The battery percentage is displayed upon startup. To access the battery compartment:

1. Locate the battery compartment cap, usually at the top or back of the device.
2. Unscrew or open the cap.
3. Insert or replace the battery, ensuring correct polarity.
4. Securely close the battery compartment.

Figure 3: Battery Compartment of Hanna HI98107 pHep pH Tester. This image shows the open battery compartment of the pH tester, revealing the coin-cell battery slot and the screw-on cap. This is where the CR2032 battery is inserted or replaced.

4.2. Electrode Conditioning

Before first use or after prolonged storage, the pH electrode should be conditioned. Remove the protective cap and immerse the electrode in a pH 7.01 buffer solution for at least 30 minutes to ensure optimal performance.

5. Operating Instructions

5.1. Powering On/Off

• To turn on the meter, press the Power button.
• To turn off the meter, press and hold the Power button until 'OFF' appears on the display.

5.2. Calibration

Regular calibration is crucial for accurate measurements. The HI98107 supports 1 or 2-point calibration using pre-programmed standard buffers (pH 4.01, 7.01, 10.01).

1. Turn on the meter.
2. Rinse the electrode with distilled or deionized water.
3. Immerse the electrode into the first calibration buffer (e.g., pH 7.01).
4. Press the CAL button. The meter will enter calibration mode.
5. The meter will automatically recognize the buffer value and indicate stability. Once stable, it will accept and store the calibration.
6. For a 2-point calibration, rinse the electrode and immerse it into the second buffer (e.g., pH 4.01 or 10.01). Repeat step 5.
7. After successful calibration, the meter will return to measurement mode.

5.3. Taking Measurements

1. Ensure the meter is calibrated.
2. Rinse the electrode with distilled or deionized water.
3. Immerse the electrode into the sample to be tested. Ensure the electrode tip is fully submerged.
4. Stir gently and wait for the reading to stabilize on the LCD. The stability indicator will disappear when the reading is stable.
5. Record the pH and temperature readings.

5.4. Setup Options (Automatic Shut-off, Temperature Unit)

To access setup options, press a button located in the battery compartment (refer to Section 4.1 for battery access). Options include:

• Automatic Shut-off: Set the meter to turn off after 8 minutes, 60 minutes, or disable this feature.
• Temperature Unit: Select between °C (Celsius) or °F (Fahrenheit) for temperature display.

6. Maintenance

6.1. Electrode Cleaning and Storage

• Cleaning: After each use, rinse the electrode thoroughly with distilled or deionized water to prevent contamination. If the electrode is dirty, use a mild cleaning solution specifically designed for pH electrodes.
• Storage: Always store the electrode with its protective cap filled with storage solution or pH 7.01 buffer. Never store the electrode dry or in distilled water, as this can damage the sensor.

6.2. General Care

• Keep the meter clean and dry.
• Avoid dropping the meter or subjecting it to harsh impacts.
• Do not expose the meter to extreme temperatures or direct sunlight for extended periods.

7. Troubleshooting

If you encounter issues with your HI98107 pHep, refer to the following common problems and solutions:

• Inaccurate or Unstable Readings:
  • Ensure the electrode is clean and properly conditioned.
  • Recalibrate the meter with fresh buffer solutions.
  • Check for air bubbles around the electrode tip during measurement.
  • Verify that the sample temperature is within the meter's operating range.
• 'ERROR' Messages:
  • An 'ERROR' message during calibration often indicates contaminated or expired buffer solutions, or a damaged electrode. Replace buffers and re-attempt calibration.
  • If errors persist, the electrode may need replacement or further cleaning.
• Meter Does Not Turn On:
  • Check the battery. Replace if necessary (refer to Section 4.1).
  • Ensure the battery is inserted with correct polarity.

8. Specifications

9. Warranty and Support

The Hanna HI98107 pHep is manufactured by WLR Industries. For specific warranty information, technical support, or service inquiries, please contact WLR Industries directly or refer to the warranty card included with your product. Keep your purchase receipt as proof of purchase for warranty claims.

Manufacturer: WLR Industries

Date First Available: May 24, 2024