Hanna Instruments HI981037 - Skin & Scalp PH Tester Manual

Table of Contents

Contents

1 Introduction
2 Preliminary Examination
3 General Description & Intended Use
4 Probe Features
5 Specifications
6 Functional Description & LCD Display
7 One or Two-Point Calibration with pH 7.01
- 7.1 One-Point
- 7.2 Two-Point
8 One-Point Calibration with pH 4.01
9 Auto-Off
10 Clear Calibration
11 Err Message
12 Battery Indicator
13 Care & Maintenance
14 Accessories
15 Battery Replacement
16 Documents / Resources
- 16.1 References
- 16.2 Download manual

Introduction

Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the tester.
For more information about Hanna Instruments and our products, visit www.hannainst.com or e-mail us at sales@hannainst.com.
For technical support, contact your local Hanna Instruments Office or e-mail us at tech@hannainst.com.

Preliminary Examination

Remove the tester and accessories from the packing material and examine it carefully. If you require any further information, please contact Hanna Instruments technical support team at tech@hannainst.com.

Each HI981037 is delivered in a cardboard box and is supplied with:

HI70004 pH 4.01 buffer solution, 20 mL sachet (2 pcs.)
HI70007 pH 7.01 buffer solution, 20 mL sachet (2 pcs.)
HI700620 Cleaning and disinfection solution for skin residuals, 20 mL sachet (1 pc.)
HI700621 Electrode cleaning solution for skin grease and sebum, 20 mL sachet (1 pc.)
HI9072 Electrode storage solution, 13 mL dropper
CR2032 3V Lithium-ion battery
Instrument quality certificate
Instruction manual

Note: Save all packing material until you are sure that the tester works correctly. Any damaged or defective item must be returned in its original packing material with the supplied accessories.

General Description & Intended Use

The HI981037 Skin & Scalp pH Tester is designed to measure the pH of the skin and scalp. It features a single button operation system and is easy to use. It has a compact and waterproof casing, and automatic pH calibration at one or two points. All readings are automatically compensated for temperature variations with a built-in temperature sensor. The flat tip of the pH electrode provides optimal contact between the skin or scalp, and the sensor. The pH electrode has an open junction design and utilizes a non-flowing gelled reference electrolyte. The flat tip allows the pH sensing surface and reference junction come into contact with the skin or scalp, and equilibrate quickly and reproducibly.

Probe Features

Flat Glass Tip

The flat tip provides optimal surface contact for skin or scalp pH measurements, and for surfaces that cannot be penetrated.

Specialized Glass Formulation

Specialized low temperature (LT) pH glass ensures fast stabilization and accurate results at lower temperatures.

Open Junction Reference

The open junction design consists of a solid gel interface between the skin or scalp and internal Ag/AgCl reference.
This interface prevents silver from entering the sample and makes it impermeable to clogging, resulting in a fast response and stable reading. This design allows for smaller sample sizes as there is no junction to submerge.
Open Junction Reference

Specifications

Range	0.00 to 12.00 pH
Resolution	0.01 pH
Accuracy	±0.05 pH
Calibration	Automatic, one or two-point
Temperature compensation	Automatic, 0 to 50°C
Electrode	Built-in probe for specific application
Battery type	CR2032 3V Lithium-ion (included)
Battery life	Approximately 800 hours of continuous use
Auto-off	8 minutes, 60 minutes or disabled
Environment	0 to 50°C (32 to 122°F); RH 95% max
Dimensions	51 x 124 x 21 mm (2.0 x 4.9 x 0.9")
Weight	48 g (1.69 oz.)

Functional Description & LCD Display

Preparation

Remove the protective cap. Do not be alarmed if salt deposits are present. Rinse the pH probe with water and blot dry.
If the glass and/or junction are dry, soak the electrode in storage solution for a minimum of 30 minutes. Rinse with water and blot dry.
Calibrate the electrode before using. For best results it is recommended to recalibrate periodically.

Storage

To ensure a quick response, the glass tip and the junction should be kept moist.
Replace protective cap with a few drops of storage solution when not in use.

Operation

Press the ON/OFF button to turn the tester on. The tester displays all LCD segments for a few seconds. The tester will enter measurement mode, the current reading and calibrated buffers will be shown.

Calibration

From measurement mode, press and hold the ON/OFF button until "CAL" is displayed.
Calibration

For one or two-point calibration using pH 7.01 buffer solution, follow procedure A.
For one-point calibration using pH 4.01 buffer solution, follow procedure B.

Note: It is recommended to calibrate the electrode with buffers at the temperature it will be used at.

One or Two-Point Calibration with pH 7.01

Procedure A

When "7.01" is displayed, place the tip of the electrode in pH 7.01 buffer. When the reading is stable, the stability icon will disappear. When "4.01" is displayed, follow the procedure to the right for a one or two-point calibration.

One-Point

Press the ON/OFF button to save the one-point calibration.
"Sto" will be displayed when the calibration is saved.
The tester will return to measurement mode and the calibration tag will be displayed.

Two-Point

Place the tip of the electrode in pH 4.01 buffer. The buffer is automatically recognized, the stability indicator will blink.
Wait until the measurement is stable and the stability indicator disappears. "Sto" will be displayed when the calibration is saved.
The tester will return to measurement mode and the calibration tags will be displayed.

One-Point Calibration with pH 4.01

When "7.01" is displayed, place the tip of the electrode in pH 4.01 buffer. The buffer value will be recognized automatically and "4.01" will be displayed.
When the reading is stable, the stability indicator will disappear."Sto" will be displayed when the calibration is saved.
The tester will return to measurement mode and the calibration tag will be displayed.

Auto-Off

From measurement mode, press and hold the ON/OFF button. The LCD will show "OFF", "CAL" followed by "d08" (default setting, 8 minutes). Release the ON/OFF button. A single press on the ON/OFF button will change the auto-off timer to "d60" (60 minutes). To disable the auto-off feature press the ON/OFF button again, LCD will show "d--". Press and hold to exit.
Using the Auto-Off Function

Clear Calibration

To clear the user calibration and restore the tester to factory default. From calibration mode, press and hold the ON/OFF button, the LCD will show "CLr".
Clear Calibration

Err Message

In calibration mode, if the probe is in the correct buffer solution and the "Err" message is displayed, the probe should be cleaned. Soak the probe in cleaning solution for 20 minutes. Rinse with water and hydrate electrode in storage solution for a minimum of 30 minutes before calibrating.
Err Message

Battery Indicator

When the battery level is low, the tag on the LCD will blink. When the battery is depleted the "Erb" message is displayed and the tester is powered off.
Battery Indicator

Care & Maintenance

Please read the information below, to ensure the highest possible accuracy:

Fresh buffer should be used for each calibration, once the sachets are opened the buffer value can change over time.
For improved accuracy a two-point calibration is recommended.
If the electrode is slow or sluggish, soak it in cleaning solution for 20 minutes, and then hydrated in storage solution for a minimum of 30 minutes before recalibrating the probe.
If measurements are taken successively, rinse the probe thoroughly in distilled or deionized water to eliminate cross-contamination.
When not in use add a few drops of storage solution to the protective cap to keep the glass tip and the junction hydrated. If storage solution it not available pH 4.01 or pH 7.01 buffer can be used. Never store the probe in distilled or deionized water.

Note: Never immerse the tester over the maximum immersion level.

Accessories

pH Buffer Solution
HI70004P	pH 4.01 buffer solution, 20 mL sachet (25 pcs.)
HI70007P	pH 7.01 buffer solution, 20 mL sachet (25 pcs.)
HI77400P	pH 4.01 & pH 7.01 buffer solution, 20 mL sachet (10 pcs., 5 each)
Electrode Cleaning Solution
HI700601P	General purpose cleaning solution, 20 mL sachet (25 pcs.)
HI700620P	Cleaning and disinfection solution for skin residuals, 20 mL sachet (25 pcs.)
HI700621P	Electrode cleaning solution for skin grease and sebum, 20 mL sachet (25 pcs.)
Electrode Storage Solution
HI70300L	Electrode storage solution, 500 mL
HI70300M	Electrode storage solution, 230 mL
HI70300S	Electrode storage solution, 30 mL dropper
HI9072	Electrode storage solution, 13 mL dropper

Battery Replacement

To change the CR2032 lithium-ion battery, turn the battery cover, located on the back of the tester, counterclockwise to unlock. Remove cover and replace the battery with positive (+) side facing out.