Hach Pocket Pro, Pocket Pro pH - Tester Manual

Specifications

Specifications are subject to change without notice.

¹ Based on a 3-point calibration and the calibration standards at the same temperature as the samples measured. Also valid for 5.5 to 8.5 pH based on a 1-point calibration, 0.0 to 8.5 pH based on a 2-point calibration with pH 7 and pH 4 standards, or 5.5 to 14 pH based on a 2-point calibration with pH 7 and pH 10 standards.

General information

In no event will the manufacturer be liable for damages resulting from any improper use of product or failure to comply with the instructions in the manual. The manufacturer reserves the right to make changes in this manual and the products it describes at any time, without notice or obligation. Revised editions are found on the manufacturer's website.

Safety information

The manufacturer is not responsible for any damages due to misapplication or misuse of this product including, without limitation, direct, incidental and consequential damages, and disclaims such damages to the full extent permitted under applicable law. The user is soley responsible to identify critical application risks and install appropriate mechanisms to protect processes during a possible equipment malfunction.

Please read this entire manual before unpacking, setting up or operating this equipment. Pay attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment.

Make sure that the protection provided by this equipment is not impaired. Do not use or install this equipment in any manner other than that specified in this manual.

Use of hazard information

Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation that may result in minor or moderate injury.

NOTICE
Indicates a situation which, if not avoided, may cause damage to the instrument. Information that requires special emphasis.

Precautionary labels

Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if not observed. A symbol on the instrument is referenced in the manual with a precautionary statement.

	This symbol, if noted on the instrument, references the instruction manual for operation and/or safety information.
	Electrical equipment marked with this symbol may not be disposed of in European domestic or public disposal systems. Return old or end-of-life equipment to the manufacturer for disposal at no charge to the user.

Certification

Canadian Radio Interference-Causing Equipment Regulation, ICES-003, Class B:
Supporting test records reside with the manufacturer.
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Product overview

The Pocket Pro^™ pH tester and Pocket Pro^™+ pH tester measure the pH of general water samples. These testers are waterproof and float.

Product components

Make sure that all components have been received. If any items are missing or damaged, contact the manufacturer or a sales representative immediately.

Install the batteries

Explosion hazard. Incorrect battery installation can cause the release of explosive gases. Be sure that the batteries are of the same approved chemical type and are inserted in the correct orientation. Do not mix new and used batteries.

Fire hazard. Battery substitution is not permitted. Use only alkaline batteries.

Install the four AAA alkaline batteries in the tester. Refer to the illustrated steps in Figure below.

User interface and navigation

Display description

Figure below shows the measurements, calibration standard information and indicator icons shown on the display.
Table 1 gives descriptions of the icons.

² Shows after auto calibration
³ Shows during auto calibration
⁴ Shows during custom calibration.

Table 1 Display icons

Icon	Description
	Shows the battery power level. Flashes when the battery power is less than 10%.
	Shows when the lock feature is on. When the lock feature is on, the parameter value on the display does not change. Push to set the lock feature to on or off.
Sensor?	Refer to Troubleshooting
	Shows when the tester is in calibration mode or when a calibration is due. If "?" shows next to the calibration icon, the last calibration was not successful. When the ACAL setting is set to Yes (default), "?" shows next to the calibration icon when a calibration is due.

Keypad description

Figure 5 and Figure 6 show the Pocket Pro and Pocket Pro+ keypads. Table 2 gives the key descriptions.

Figure 5 Keypad overview - Pocket Pro

Figure 6 Keypad overview - Pocket Pro+

Table 2 Key functions

Key	Description
	Push and hold to set the power to on or off.
	Push and hold to set the power to on or off. Push to set the backlight to on or off. After 1 minute of no activity, the backlight switches off.
	Push to start a calibration. To exit a calibration, push and hold. Push and hold until "SEt" shows on the display to go to the settings menu. To exit the settings menu, push and hold until "End" shows on the display. When in the settings menu, push to scroll through the settings. Note: Power cannot be set to off while in settings or calibration mode.
	Push to set the lock feature to on or off. When the lock feature is on, the lock icon shows and the parameter value on the display does not change.

Calibration

Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets (MSDS/SDS) for safety protocols.

Calibrate the tester before initial use and when:

• Results drift
• Results are not accurate
• "?" shows next to the calibration icon

Calibrate the tester with the:

• Auto calibration procedure
• Custom calibration procedure⁵

Before the initial calibration and after a dry storage, soak the sensor for several minutes in the sample or tap water.

⁵ Custom calibration can only be done on the Pocket Pro+ tester.

Auto calibration

Items to collect: One, two or three auto-recognition calibration standards

1. Set the power to on.
2. Remove the cap from the sensor.
3. Push to go to calibration mode.
   The auto-recognition standard(s) to measure shows on the bottom line.
   Note: If "C1" shows on the bottom line, do not continue. Set the tester to auto calibration mode. Refer to Configure the settings.
4. Rinse the sensor and cap with deionized water and blot dry.
5. Pour the auto-recognition standard shown into the cap to the fill line.
6. Put the sensor fully into the cap.
7. When the measurement is stable, push to save the measurement.
   The measured value flashes three times.
8. Optional: To measure another calibration standard (maximum of 3), do steps 4–7 again.
9. Push and hold to go to continuous measurement mode. "END" shows on the display.
   Note: "ECAL" shows on the display if the calibration was not successful. Refer to Troubleshooting.
10. Rinse the sensor and cap with deionized water and blot dry.

Custom calibration

(Pocket Pro+ only)

Items to collect: One or two calibration standards or samples of known pH value

1. Set the power to on.
2. Remove the cap from the sensor.
3. Go to the settings menu. Make sure that the bUFr setting is set to Cus (custom standard). Refer to Configure the settings.
4. Push to go to calibration mode.
   "C1" shows on the bottom line.
5. Rinse the sensor and cap with deionized water and blot dry.
6. Pour the calibration standard or sample into the cap to the fill line.
7. Put the sensor fully into the cap.
8. When the measurement is stable, push and until the pH value of the calibration solution or sample shows on the display.
9. Optional: To measure a second pH calibration standard or sample of known value, push , then do steps 5–8 again.
10. When the last measurement is stable, push and hold to save the calibration and go to continuous measurement mode. "END" shows on the display.
    Note: "ECAL" shows on the display if the calibration was not successful. Refer to Troubleshooting.
11. Rinse the sensor and cap with deionized water and blot dry.

Measurement

Note: Air bubbles under the probe tip when submerged can cause slow stabilization or error in measurement. Shake the tester from side to side to remove air bubbles.

1. Set the power to on.
2. Remove the cap from the sensor.
3. If the lock icon shows on the display, push to go to continuous measurement mode.
4. Rinse the sensor and cap with deionized water and blot dry.
5. Pour the water sample into the cap to the fill line.
6. Put the sensor fully into the cap. The measured value shows on the top line.
7. To keep the measured value on the display when the sensor is removed from the sample, push .
   Note: The lock icon shows on the display when the measurement is stable.
8. To measure another sample, do steps 3–7.
9. When done with measurements:
   1. Rinse the sensor and cap with deionized water.
   2. Put the cap on the tester.
   3. Set the power to off.

Advanced operation

Configure the settings

1. Push and hold until "SEt" shows on the display.
2. Push to scroll through the settings. The current value of the setting shows on the bottom line.

3. To change the value of the setting, push or .
4. When done with changes, push and hold until "End" shows to go to continuous measurement mode.

Maintenance

Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the document.

Clean the sensor

Clean the sensor when:

• "SENSOR?" shows on the display
• Stabilization is slow
• Results drift or are not accurate
• Calibration failure occurs

1. Soak the sensor in the applicable cleaning agent. Refer to Table 3.
2. Rinse or soak the sensor in deionized water for 1 minute.

Table 3 Cleaning agents

Replace the batteries

When the battery icon flashes or the tester will not come on, replace all four batteries. Refer to Install the batteries.

Replace the sensor

Note: Only Pocket Pro+ testers have replaceable sensors.

To replace the sensor, refer to the instructions supplied with the sensor.

Troubleshooting

Replacement parts and accessories

Personal injury hazard. Use of non-approved parts may cause personal injury, damage to the instrument or equipment malfunction. The replacement parts in this section are approved by the manufacturer.

Note: Product and Article numbers may vary for some selling regions. Contact the appropriate distributor or refer to the company website for contact information.

Table 4 Replacement parts

Table 5 Accessories

HACH COMPANY World Headquarters
P.O. Box 389, Loveland, CO 80539-0389 U.S.A.
Tel. (970) 669-3050
(800) 227-4224 (U.S.A. only)
Fax (970) 669-2932
orders@hach.com
www.hach.com

HACH LANGE GMBH
Tel. +49 (0) 2 11 52 88-320
Fax +49 (0) 2 11 52 88-210
info-de@hach.com
www.de.hach.com

© Hach Company/Hach Lange GmbH, 2013–2014, 2023. All rights reserved.

Videos

Hach Pocket Pro Tester How to Reset Video

Documents / Resources

References

• Hach | Hach
• Geräte und Reagenzien für die Wasserqualitätsanalyse | Hach

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