Apera Instruments PH60S User manual

PH60 Series Premium Line pH Testers

User Manual

PH60 pH Tester for General Purpose

PH60S Spear pH Tester for Food and Solid Samples

PH60F Flat pH Tester for Surface Testing

APERA INSTRUMENTS, LLC

aperainst.com

v7.0

Thank you for purchasing Apera Instruments 60 Series Premium Line pH TesterKit.Pleaseread this

manualcarefully before use inorder toproperly use andmaintainthe product.

For video tutorials, please go to support.aperainst.com

Table of Contents

1. Battery Installation..................................................................................................... 3

2. Keypad Functions ..................................................................................................... 3

3. Complete Kit.............................................................................................................. 4

4. Preparation Before Use............................................................................................. 4

5. pH Calibration ........................................................................................................... 4

6. pH Measurement....................................................................................................... 6

7. Parameter Setting .....................................................................................................7

8. ORP Measurement.................................................................................................... 9

9. TechnicalSpecifications............................................................................................ 9

10.Other Specifications................................................................................................ 10

11. Probe Replacement................................................................................................ 10

12. Troubleshooting Guide............................................................................................ 11

13.Warranty ................................................................................................................ 12

NOTES

•For PH60 and PH60F models, we added a few drops of water in the probe cap before the

product left factory in order to keep the sensitivity of the pH electrode. So it’s normal if you

find some water droplets in the probe cap for the first time use.

•When storing the tester, you can also add a few drops of water or pH 4.00 buffer in the

probe cap to keep the electrode in an active state.

•The AAA alkaline batteries are pre-installed. Please pull off the insulation paper before

powering on the tester.

•For PH60, there is a sensor shield on top of the pH electrode, protecting the glass bulb

sensor from accidental damage. You can also detach the sensor shield when rinsing and

cleaning the electrode as shown in the graph below. After cleaning, you can put the sensor

shield back.

Detach before cleaning

Sensor Shield

1 Battery Installation

Please install batteries according to the following steps. *Note the direction of batteries:

The anode (“+”) OF EVERY SINGLE Battery MUST face UP.

(WRONG INSTALLATION OF BATTERIES WILL CAUSE DAMAGE TO THE TESTER

AND POTENTIAL HAZARDS

2 Keypad Functions

Short press: < 2 seconds

Long press: > 2 seconds

1. Short press to turn on the tester and long press to

turn off the tester.

2.When turned off, long press to enter parameter

setting.

3.In measurement mode, short press to turn on

backlight.

1. In measurement mode, short press to switch

parameter from pH →ORP (Oxidation Reduction

Potential), ORP probe sold separately.

2. In mode setting, short press to change

parameter (Unidirectional).

1. Long press to enter calibration mode;

2.In calibration mode, short press to confirm

calibration;

3.When measured value is locked, short press to

unlock.

﹣

① Pull the battery cap up

②

Slide the battery cap along to the direction of arrow

③

Open the battery cap

④

Insert the batteries (ALL POSITIVE SIDES FACING UP) (see graph)

⑤

Close the battery cap

⑥

Slide and lock the battery cap along to the direction of arrow

⑦

Fit the tester’s cap while making sure to push all the way down. The waterproof

feature may be compromised if the cap is not fittedcorrectly.

3 Complete Kit

4 Preparation Before Use

4.1 Things needed in addition to what’s in the box: A cup of distilled water (8-16oz) for rinsing the

probe, and clean tissue paper for removing excess water.

4.2 For PH60 and PH60F: If the tester hasn’t been used for a long time (> 1 month), or the tester’s

response is very slow, you can soak the probe in the 3M KCL storage solution overnight before

use to restore the electrode’s sensitivity. The storage solution is 3M KCL (SKU: AI1107). One

bottle of 10mL storage solution comes with the tester kit. If the storage solution was

contaminated, please replace with new ones timely. *DO NOT use any other brand’s storage

solutions as potential damage could be caused to the probe.

4.3 For PH60S: NEVER store the spear pHprobe in a dry condition because permanent damage

can be caused.Thespearprobeshouldalwaysbestored in the 3M KCL soaking solution when

not in use.

5 pH Calibration

5.1 How to Calibrate

5.1.1 Short press to power on. Rinse the probe in distilled water; Use clean tissue paper to

dap off excess water.

5.1.2 Pour pH buffer solutions in the correspondent calibration bottles to about half volume.

5.1.3 Dip the probe in the pH 7.00 buffer solution.

5.1.4 Long press to enter calibration mode, the screen will turn green (in calibration mode, if

you decide to quit calibration, short press to return to measurement).

5.1.5 Stir the probe for a few seconds to eliminate potential air bubbles on the probe.

5.1.6 Allow it to stand still in the buffer solution until a stable reading is reached

–when appears and stays on the screen; short press to complete

1st point calibration and the tester will return to measurement mode.

Icon will appear at the bottom left of the screen, indicating the middle

point of calibration has completed.

5.1.7 Rinse the probe in distilled water and dap off excess water with tissue

paper. Dip the probe in pH 4.00 buffer solution, follow the steps from 5.1.5

to 5.1.7 to complete 2nd point calibration. Icons will appear at the bottom left of the

screen.

5.1.8 If you are to test alkaline samples, rinse the probe and dip it in pH 10.01 buffer solution,

follow the steps from 5.1.5 to 5.1.7tocomplete the 3rd point calibration. Icons will

appear at the bottom leftof the screen.

5.2 Notes about Calibration

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

10.01, 1.68, or 12.45) immediately after the 1st point calibration is finished. Do NOT turn off

the meter before you calibrate 2nd or 3rd point. Otherwise, you will need to restart the

calibration process with 7.00 pH first.

b) The pH 4.00 and 7.00 buffer solutions poured into the calibration bottles can be used for

about 10 times as long as they are not contaminated and the bottles are capped when not

in use. pH 10.01 can only be used for less than 5 times of calibration as it will lose its

accuracy faster. After that, replace the buffer solutions in the calibration bottles with new

ones that are in the buffer bottles (50ml each) to keep the accuracy of the standard buffer

solutions. Keeping the freshness and cleanliness of calibration buffers is the basis for

accurate pH measurement. Do not pour used buffer solutions back into the buffer bottles in

case of contamination.

c) The tester can perform 1 to 3 points of automatic calibration. The tester can recognize 5

kinds of pH buffer solutions. For details, please refer to the following table:

Calibration

USA Series

NIST Series

Indication icon

Recommended

1-pt

7.00 pH

6.86 pH

Accuracy requirement ≥

0.1 pH

2-pt

Option A

1st pt: 7.00 pH

2nd pt: 4.00 pH or

1.68 pH

Option

1st pt: 6.86 pH

2nd pt: 4.01 pH or

1.68 pH

Range < 7.00 pH

Option B

1st pt: 7.00 pH

2nd pt: 10.01 pH or

12.45 pH

Option

1st pt: 6.86 pH

2nd pt: 9.18 pH or

12.45 pH

Range >7.00 pH

3-pt

1st pt: 7.00 pH

2nd pt: 4.00 or 1.68 pH

3rd pt: 10.01 or 12.45 pH

1st pt: 6.86 pH

2nd pt: 4.01 or 1.68 pH

3rd pt: 9.18 pH or 12.45 pH

Range: 0 to 14.00 pH

5.3 Self-diagnosis

Icons

Self-diagnostic information

Checking and how to fix

Wrong pH buffer solution or the range

of calibration solution exceeds

standard.

a) Check whether pH buffer solution is correct

(1st point calibration must be 7.00).

b) Check whether pH buffer solution is in good

condition (fresh and clean)

c) Check whether the probe is damaged.

d) Check if there is any air bubble in the glass

bulb. If so, shake it off.

Press key when reading is not

stable yet during calibration

Wait for the smiley face icon to appear and stay,

then press to finish calibration

* If you find any air bubble around the glass bulb of pH electrode, simply shake the tester in the

solution with force for a few seconds, and the bubble should disappear right after. The existence of

an air bubble around the glass bulb will cause measurement error.

6 pH Measurement

6.1 How to take pH measurements

Short press to turn on the tester. Rinse the probe in distilled water, shake the meter and dap

off excess water with tissue paper (do not rub or wipe the glass sensor). Dip the probe in sample

solution, stir gently, and allow it to stand until a stable reading is reached. Record readings after

appears and stays on the screen.

6.2 Applications of each model:

Model/Probe

Application

PH60/Bulb probe

•General water solutions’ pH measurement such as hydroponics,

greenhouse, aquaculture, aquarium, pools and spas, water

treatment, beverage making, drinking water, education,

environmental monitoring, etc.

PH60S/Spear probe

•Cheese, sushi rice, meat, fruit, dough, solid culture medium and

semi-solid medium measurement;

•Also works well for general water solutions.

PH60F/Flat probe

•Flat surface measurement such as skin, paper, textiles, fabric,

leather, etc;

•Small sample test (place sample fluid in the probe cap);

•Also works well for general water solutions.

6.3 PH60S Spear probe testers are widely used for soft solid samples containing water.

When conducting such tests, pay attention to insert probe slowly, and be careful to

prevent probe from damage. If the medium is too hard (such as frozen meat or

some fruits), please make a small hole with a clean knife before inserting the

probe.

* For food pH measurement, it should always be a sampling test, which means test samples should

no longer be edible.

6.4 PH60F Flat probe testers are mostly for flat surface sample test.

•For skin test: skin should be without sweat or dirt, nor be overly cleaned (do not use

facewash products before testing) to avoid affecting measurement results, dampen skin

with some distilled water, slightly force flat probe onto the skin, get readings after value

stabilized.

•For paper, fabric, leather and other surface test: add 1~2 drops of distilled or deionized

water on surface, then perform measurements.

6.5 Special Notes

a) The pH probe must be rinsed thoroughly after each use. Warm soap water can be used to

clean off grease or other contaminants.

b) The PH60 series testers are not designed for testing low ion-concentration liquid such

as distilled or deionized water. To get a good measurement of these liquid, users need

to use a specialized meter such as PH850-PW (AI5541). Contact us at info@aperainst.com

for more details.

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

the readings to get fully stabilized (typically 2-5 minutes). Please be patient. Also, adding

1ml of 3M KCL to 1000ml of water can also accelerating the stabilization while minimizing

the pH change.

d) Do NOT store probe in distilled or deionized water because those low ion-concentration

liquids could damage the pH electrode. They are only recommended for rinsing the probe.

7 Parameter Setting

7.1 Setup Menu

Symbol

Contents

Parameter

Factory Default

Select pH buffer solution

USA –NIST

USA

Low value measurement alarm setting

0 to 14.00pH

High value measurement alarm setting

0 to 14.00pH

14.00

Select automatic lock

Off –On

Off

Select backlight

Off - 1 - On

Select temperature unit

℃ - ℉

℉

Restore to factory default

No –Yes

7.2 Parameter setup method

When turned off, long press to enter parameter setting→Short press to switch P1-P2-

…P7→Short press , parameter flashing→Short press to chooseparameter→Short

press to confirm→Long press to go back to measurement mode.

7.3 Parameter setting instruction

7.3.1 Select standard pH buffer solution (P1):

There are two options of standard buffer solutions: USA series and NIST series. Factory default is

USA series, for details see clause 5.7.

7.3.2 Alarm Function (P2&P3)

Examples:

■Alarm triggered when measurement ≤3.20 pH:

Preset lowest value (P2) = 3.20 pH, highest value (P3) = 14.00 pH, when measured value ≤

3.20 pH (stable displays on LCD); LCD displays redbacklight.

■Alarm triggered when measurement ≥8.60 pH:

Preset highest value (P3) = 8.60 pH, lowest value (P2) = 0.00 pH, when measured value ≥ 8.60

pH (stable displays on LCD); LCD displays red backlight.

■Alarm triggered when measurement ≤3.20 pH or ≥ 8.60 pH

Preset lowest value (P2) = 3.20 pH, highest value(P3) = 8.60 pH, when measured value is lower

than 3.20 pH or higher than 8.60 pH (stable displays on LCD), LCD displays red backlight.

7.3.3 Automatic Lock (P4)

Select “On” to activate auto lock function. When reading is stable for more than 10 seconds,

the tester will lock the value automatically, and HOLD icon will display on LCD. Short press

key again to cancel the lock.

7.3.4 Backlight (P5)

“Off”-turn off backlight, “On”-always turn on backlight, “1”- backlight will last for 1 minute.

7.3.5 Temperature Unit (P5)

Select C˚ or F˚, the factory default is ˚F.

7.3.6 Factory default setting (P7)

Select “Yes” to recover instrument calibration to the theoretical value (pH value in zero potential is

7.00pH, slope is 100%), parameter setting return to initial value. This function can be used when

instrument does not work properly in calibration or measurement. Calibrate and measure again

after recovering the instrument to factory default status.

8 ORP Measurement

ORP stands for Oxidation-Reduction Potential. ORP is a measure of the cleanliness of the water &

its ability to break down contaminants. Refer to Section 11 to replace ORP probe (sold separately,

SKU: AI1207), press key to enter ORP mode. Rinse the probe in distilled water and dry it. Dip

the probe in sample solution, stir gently, and allow it to stand still until a stable reading is reached.

Record readings after appears and stays.

9 TechnicalSpecifications

Measuring Range

-2.00 –16.00 pH

Resolution

0.01pH

Accuracy

±0.01pH ±1 digit

Calibration Points

1 –3 points

Automatic Temperature

Compensation (ATC)

0 –50˚C (32 –122˚F)

ORP

(mV)

Measuring Range

±1000mV

Resolution

1mV

Accuracy

±0.2% F.S

Temp.

Measuring Range

0 –50˚C (32 –122˚F)

Resolution

0.1˚C

Accuracy

±0.5˚C

10 Other Specifications

LCD

3-color LCD screen,

Blue: Measurement; Green: Calibration; Red: Alarm

Reading Lock

HOLD

Low-Voltage Warning

flashing, reminder of battery replacement needed

Auto. Power-Off

In 8 minutes without operation

Water Proof Rating

IP67

Power

DC3V, AAA alkaline batteries×4

Battery Life

Operation up to 2000 hours

Dimension/Weight

Tester: 40×40×178mm/133g; Case: 255×210×50mm/700g;

11 Probe Replacement

11.1 Every pH probe gradually loses its sensitivity as it’s being used. A typical service life of a pH

probe is 1-2 years depending on many factors such as frequency of use, nature of test

samples, and how well it is maintained, etc. Apera Instruments recommends replacing the

pH probe after one year of frequent use to guarantee the optimal performance of a pH meter.

11.2 How to replace the probe: Twist off the probe ring, unplug the probe, plug in new probe (pay

attention to probe’s position), and twist on the probe ring.

11.3 The model numbers of the replacement probes that are compatible with the PH60 Series

Meters:

•AI1201 PH60-E (Regular pH glass bulb probe)

•AI3711-E PH60-DE (Double-junction pH glass bulb probe)

•AI1205 PH60S-E (Spear pH probe for soft-solids pH testing)

•AI1203 PH60F-E (Flat pH probe for surface pH testing)

•AI1207 ORP60-E (ORP probe)

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