Apera Instruments PH1 Manual de usuario

PH1 Value pH Tester Kit

User Manual

APERA INSTRUMENTS (Europe) GmbH

www.aperainst.de

v 5.1

Thank you for purchasing the Apera Instruments PH1 Pocket pH Tester Kit. Please read this manual carefully

before use in order to properly use and maintain the product.

For video tutorials, please go to aperainst.de/service/support

Table of Contents:

1. General Introduction .......................................................................................................................................1

2. What’s in the Kit? ............................................................................................................................................1

3. Preparation before Use...................................................................................................................................2

4. Calibration.......................................................................................................................................................2

5. Measurement..................................................................................................................................................3

6. Parameter Setting...........................................................................................................................................3

7. Technical Specifications .................................................................................................................................4

8. Probe Cleaning ...............................................................................................................................................4

9. Probe Storage.................................................................................................................................................4

10. Troubleshooting Guide....................................................................................................................................4

11. Battery Replacement ......................................................................................................................................6

12. Warranty..........................................................................................................................................................6

ATTENTION

•Water droplets are added during production to maintain the moisture of the probe. This is normal

practice and should not be attributed to used products.

•Never use the product when it’s freezing cold. Let it warm to room temperature before using.

•The latest PH1 Tester comes with an upgraded probe structure equipped with a sensor shield that

prevents glass bulb breakage from accidental collisions (see picture below). You can remove the

shield when cleaning the sensor and put it back on afterwards.

Sensor Shield

1. General Introduction

2. What’s in the Kit?

stands for stabilized reading

stands for successful calibration

is pH 4, is pH 7, is pH 10.

Short Press (tap)

Long Press

(hold for 2 seconds)

1) Power on

2) In settings, change

parameter

3) In calibration mode,

cancel calibration.

1) Power Off

2) When turned off,

long press to enter

settings.

1) In calibration mode,

start calibration

2) In settings, short

press to confirm

changes.

In measurement

mode, long press to

enter calibration

mode.

Probe Cap

•Water droplets are added during production to

maintain the moisture of the probe. This is normal

practice and should not be attributed to used

products.

•The fill line shows the level to which you should

pour the soaking solution or sample solution.

•For details of probe storage, see Section 7.

pH Probe

•Built with Apera’s proprietary lithium glass

membrane for high accuracy and fast

response.

•Temp. sensor is built in for automatic

temp. compensation.

•The pH probe is non-replaceable.

3. Preparation before Use

3.1. Prepare a cup of pure water (250-500ml) for probe rinsing. Pure water refers to tap water, RO

water, distilled water, or deionized water.

3.2. Pull off the battery insulation paper; Take off the probe cap.

3.3. Perform a 2-point calibration in pH 7.00 and pH 4.00 standard buffers. Refer to Section 4 for tutorial.

4. Calibration

■Notes

a) The 1st point calibration must be 7.00 pH. Perform the 2nd and 3rd point calibrations (4.00 or 10.01)

right after the 1st point calibration is finished. Do NOT turn off the tester before you calibrate 2nd or

3rd point. Otherwise, you will need to restart the calibration process with 7.00 pH first.

b) In calibration mode, when the measured value is not fully stabilized ( is not staying on LCD),

pressing will cause .

c) Only pH 4.00 and pH 7.00 buffer solutions are included in the test kit, pH 10.01 is not. You can

purchase it separately if needed (when your target pH level is > 8.0 pH).

4.1 Short press to power on.

4.2 Rinse the probe in pure water and shake off excess water. Long

press to enter calibration mode. (Short press to go

back to measurement mode if you want to cancel the

calibration).

4.3 Insert the probe in the 7.00 pH calibration solution to start 1st

point calibration; Make a quick stir in the solution then hold still;

Wait for to appear and stay on the screen.

4.4 Short press to start 1st point calibration; tester returns to

measurement mode; will display on the lower left corner,

indicating a successful 1-point calibration.

4.5 To calibrate 2nd point, use 4.00 pH buffer and repeat Step 4.2 to

4.4 (Do NOT turn off the tester after you finish pH 7 calibration).

will display next to , indicating a successful 2-point

calibration.

4.6 If necessary (target pH > 8.0), calibrate 3rd point using 10.01

standard pH buffer (sold separately) and repeat Step 4.2 to 4.4.

will show up next to and , indicating a successful

3-point calibration.

d) Having good-quality standard calibration buffers ready is the foundation for reliable pH

measurement. The bottled buffers (50ml.) in the kit can be used for up to 10 times of calibration

(make sure they are tightly closed when not in use). After that, we recommend replacing them with

new ones to keep the accuracy.

e) Tester will automatically recognize pH buffer solution, users can choose calibration points: 1 point, 2

points, or 3 points. For details, please refer to the following table:

Calibration Solution

Calibration icon

When

1-point

Calibration

7.00 pH

Required Accuracy ≥ 0.3 pH

2-point

Calibration

7.00 pH and 4.00 pH

Target pH level < 8.0 pH

7.00 pH and 10.01 pH

Target pH level > 8.0 pH

3-point

Calibration

7.00 pH, 4.00 pH

and 10.01 pH

Wide measuring range

5. Measurement

5.1. Short press to power on the tester. Remove the probe cap.

5.2. Rinse the probe in pure water. Then shake off excess water.

5.3. Fully submerge the probe into your sample solution at least 1 inch deep, then hold still. Record the

readings after the reading is fully stabilized ( comes up and stays on screen).

◆Pure Water pH Measurement

When testing pure water like tap water, drinking water, RO water and distilled water, it will take longer for

the readings to get fully stabilized (typically 1-5 minutes). Please be patient. If still not working, add Apera

3M KCL (AI1107) to your pure water at the ratio of 1:1000 (e.g. 1 ml KCL to 1000 ml water) to accelerate

stabilization while minimizing pH change. If the accuracy is not meeting your requirement, please contact

us at info@aperainst.de to find the specialized meter designed for pure water pH test.

6. Parameter Setting

Prompt

Parameter Setting Content

Code

Factory Default Setting

Select pH buffer series

USA –NIST

USA

Select temperature unit

˚F –˚C

˚C

Back to factory default setting

No –Yes

Parameter Setting Tutorial

When turned off, long press to enter parameter settings → short press to switch P1-P2-P3

→short press to select the parameter you want to change (parameter flicking) →short press

to make changes, short press to confirm parameter change → long press to go back to

measurement mode.

7. Technical Specifications

Range

0 –14.0 pH

Resolution

0.1 pH

Accuracy

±0.1 pH

Calibration Points

1 –3 points

Automatic Temperature Compensation

0 –50˚C (32 – 122˚F)

Temperature

Range

0 –50˚C (32 – 122˚F)

Resolution

0.1˚C /˚F

Accuracy

±0.5˚C/±1˚F

◆pH probes do NOT last forever. They age through normal use and will eventually fail. The average

lifetime of a probe is 1-3 years depending how it is used and maintained. To ensure you receive a

long life from your tester, please ensure you follow the guide below.

8. Probe Cleaning

8.1. The tester is only as accurate as the probe is clean. Always thoroughly rinse off the probe

before and after each test with clean water in a container or with a wash bottle.

8.2. For tough contaminants, detach the sensor shield, soak the probe in Apera’s cleaning solution

(AI1166) or detergent water for 30 minutes. Then use a soft brush to remove the contaminants.

Afterwards, soak the probe in Apera 3M KCL soaking solution (AI1107) for at least 1 hour.

Rinse it off, then re-calibrate the tester before using.

9. Probe Storage

9.1. Under regular usage (daily or weekly use), just make sure the probe cap is wet, and tightly

close the cap with the red O-ring.

9.2. For long-term storage (when you are not going to use the product for a while), add Apera 3M

KCL soaking solution (AI1107) or pH 4.00 buffer solution to the Fill line in the probe cap and

store the probe in it. Close on the probe cap tightly with the red O-ring.

9.3. If you find white crystals inside or outside the probe cap, it is perfectly normal. It is the 3M KCL

that crystalizes over time by its nature. Just rinse them off and use the tester as normal. This

chemical is not poisonous nor dangerous, and the probe’s performance will not be affected.

9.4. NEVER store the probe in pure water like tap, RO, distilled, or deionized water as they could

damage the pH probe. If this happens, immediately soak the pH probe Apera 3M KCL soaking

solution overnight, then re-calibrate it before using. Pure water is only for rinsing the probe.

10. Troubleshooting Guide

Trouble

Reason

How to fix

Cannot

calibrate

Pressing too soon

(Showing Er2)

Wait for to stay on screen before pressing .

Poor quality standard

solutions

(Showing Er1)

Replace with fresh and clean standard calibration solutions

made by legitimate scientific instrument manufacturers.

Contaminated sensor

(Showing Er1)

Use a soft brush to clean the probe with Apera probe cleaning

solution or detergent water.

Incorrect calibration order

(Showing Er1)

Reboot tester, calibrate pH 7.0 first, then pH 4.0. For details

refer to calibration notes (a).

Broken probe

(Showing Er1)

If you don’t find any visible damage of the probe, contact

Apera for warranty fulfillment; If there is visible damage,

replace the tester.

Dried-out probe

(Showing Er1)

Soak the probe in Apera 3M KCL solution for at least 15

minutes.

Probe is not fully submerged

solution

(Showing Er1)

Make sure the probe is fully immersed in the solution at least

1 inch deep.

Air bubbles around the

sensor

(Showing Er1)

Make a quick stir in the solution to remove air bubbles.

Reading is

always slowly

changing, won’t

stabilize

Contaminated sensor

Use a soft brush to clean the probe with Apera probe cleaning

solution or detergent water.

Clogged junction

Use a soft brush to clean the probe with Apera probe cleaning

solution or detergent water, then soak it in Apera 3M KCL

soaking solution overnight.

Aged probe

Replace the tester.

Testing pH of low ionic

strength solutions like

tap/drinking/RO/distilled

water

Be patient, wait for 1-5 minutes to reach a fully stabilized

reading. If still not stabilizing, add Apera 3M KCL solution to

test water at 1:1000 ratio.

Display similar

readings in any

solutions or

always display

7.0 pH

Broken probe

If you don’t find any visible damage of the probe, contact

Apera for warranty fulfillment; If there is visible damage or the

probe is more than 6 months old, replace the tester.

Instrument defect

Reading keeps

jumping

Probe is not fully submerged

in the solution

Make sure the probe is fully immersed in the solution at least

1 inch deep.

Air bubbles around the

sensor

Make a quick stir in the solution to remove air bubbles.

Probe is not properly

connected, or the pin

connector is broken.

Check the probe’s connector, make sure it’s not broken and is

correctly connected. Align the probe and instrument correctly

before plugging in. Never force it. Ensure that the probe

connector is not exposed to air too long.

Calibration is

successful, but

reading is not

accurate

Aged probe

Replace the tester.

Air bubbles around the

sensor

Make a quick stir in the solution to remove air bubbles.

Clogged junction

Clean the probe with Apera probe cleaning solution, then soak

it in Apera 3M KCL soaking solution overnight.

Comparison with other

testers, test strips, or drop

tests

To compare with other testers, make sure to calibrate all

testers in the same pH 7.0 solution, then test pH 4.0.

Whichever gives more accurate reading is the most accurate

one. Test strips or drop tests’ accuracy in not comparable to

pH meters‘.

11. Battery Replacement

Please install batteries according to the following steps. *Please note the correct direction of battery

installation:

The Positive Side (“+”) OF EVERY SINGLE Battery MUST FACE UP.

(WRONG INSTALLATION OF BATTERIES WILL CAUSE DAMAGE TO THE TESTER AND POTENTIAL

HAZARDS!)

12. Warranty

We warrant this instrument to be free from defects in material and workmanship and agree to repair or

replace free of charge, at option of APERA INSTRUMENTS (Europe) GmbH, any malfunctioned or damaged

product attributable to responsibility of APERA INSTRUMENTS (Europe) GmbH for a period of TWO YEARS

(SIX MONTHS for the probe) from the delivery.

This limited warranty does not cover any damages due to:

Transportation, storage, improper use, failure to follow the product instructions or to perform any preventive

maintenance, modifications, combination or use with any products, materials, processes, systems or other

matter not provided or authorized in writing by us, unauthorized repair, normal wear and tear, or external

causes such as accidents, abuse, or other actions or events beyond our reasonable control.

APERA INSTRUMENTS (Europe) GmbH

Wilhelm-Muthmann-Straße 18

42329 Wuppertal, Germany

Contact: info@aperainst.de

Website: www.aperainst.de

Tel. +49 202 51988998

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