Introduction of Hanna Instruments HI 99104

The Instruments HI 99104 is a portable and reliable pH tester that is perfect for various applications, including water quality testing, food processing, and environmental monitoring. This pH tester is designed to provide accurate and quick pH measurements, making it an ideal tool for professionals and hobbyists alike. The HI 99104 is available for an estimated price of $195.00 and was launched in 2020.

Specification

Specification	Detail
Range	0.00 to 14.00 pH
Resolution	0.01 pH
Accuracy	±0.2 pH (at 20°C/68°F)
Environment	0 to 50°C (32 to 122°F); RH 95% non-condensing
Power Supply	2x1.5V (LR44) batteries; approx. 1000 hours

Features

Accessories

HI 1270 pH electrode w/screw connector
HI 70004P pH 4.01 buffer, 20 mL, 25 pcs.
HI 70007P pH 7.01 buffer, 20 mL, 25 pcs.
HI 70010P pH 10.01 buffer, 20 mL, 25 pcs.
HI 70300M Storage solution, 230 mL bottle
HI 7061M Cleaning solution, 230 mL bottle

Setup of Hanna Instruments

To use the Hanna Instruments HI 99104 pH tester, follow these steps

Turn on the pH tester by pressing the power button.
Calibrate the pH tester using the CAL Check feature. Dip the pH electrode in a calibration buffer solution and press the CAL button. Wait for the pH tester to display the calibration factor.
Rinse the pH electrode with distilled water and blot it dry.
Dip the pH electrode in the sample and wait for the pH reading to stabilize.
Record the pH reading and turn off the pH tester when not in use.

Description

The Hanna Instruments HI pH tester features a CAL Check feature that ensures accurate calibration and measurement. It has a measuring range of 0.00 to 14.00 pH and a resolution of 0.01 pH. The pH tester is equipped with a temperature compensation feature that provides accurate pH measurements at different temperatures. It also has a large LCD display that shows clear and easy-to-read results. The HI 99104 is powered by a long-lasting lithium battery that can last up to 1,000 hours of usage. It is also lightweight and compact, making it easy to carry around.

OPERATION

Connect the electrode to the meter and remove the black protective cap. If necessary, rinse with water to remove salt deposits. If the electrode is dry, before taking measurements, immerse it in HI70300 storage solution for about 30 minutes to reactivate it.
Switch the meter ON, calibrate (see below), then immerse the electrode tip (4 cm/1.5") into the sample. Stir gently and wait until the display stabilizes.
After use, always turn the meter OFF, rinse the electrode with water, clean it with HI7061 cleaning solution and store it with a few drops of storage (HI70300) solution in the black protective cap. NEVER USE DISTILLED OR DEIONIZED WATER FOR STORING PURPOSES. Note:
When the display fades, replace the batteries by opening the compartment on the meter top.

CALIBRATION

A weekly calibration is recommended.
Immerse the meter in pH7 buffer (HI7007), stir gently, allow the reading to stabilize and adjust the pH7 trimmer to read "7.01" pH.
Rinse and immerse the electrode in pH4 (or pH10) buffer (HI7004 or HI7010), stir gently, allow the reading to stabilize and adjust the pH4/10 trimmer to read "4.01" (or "10.01") pH.
When the meter does not calibrate, replace the electrode

Troubleshooting of Instruments HI 99104

Here are some common problems and solutions when using the Hanna Instruments HI 99104 pH tester:

Problem: The pH reading is unstable or drifted.
Solution: Re-calibrate the pH tester or replace the pH electrode.
Problem: The pH electrode is clogged or fouled.
Solution: Clean the pH electrode with a cleaning solution or replace it if necessary.

Warranty

All Hanna Instruments meters are warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. Probes are warranted for six months. This warranty is limited to repair or replacement free of charge. Damage due to accidents, misuse, tampering or lack of prescribed maintenance are not covered. If service is required, contact the dealer from whom you purchased the instrument. If under warranty, report the model number, date of purchase, serial number and the nature of the problem. If the repair is not covered by the warranty, you will be notified of the charges incurred. If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization number from the Customer Service department and then send it with shipping costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection.

Pros & Cons of Hanna Instruments HI 99104

Pros
- Portable and easy to use
- Accurate and quick pH measurements
- Large LCD display for easy reading
- Long-lasting battery life
- Temperature compensation feature
Cons
- May be expensive for some users
- May require regular calibration
- May be sensitive to harsh chemicals

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