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AeroLab P30 User Manual

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Safety Information

Before use, carefully read and follow all safety rules and operating instructions in this manual.

This product is for measuring liquids only.
Do not fully submerge the product in water.
Do not use it in extremely cold temperatures. Ensure the device is at room temperature before use.
Do not use the device if it is damaged, malfunctioning, dropped, or broken. A damaged device may give incorrect readings or pose safety risks.
Do not remove the screw cap that holds the sensor, as this may damage the sensor.
Keep the device and calibration powder out of reach of children and pets. This product is not intended for use by children.
If the device will not be used for an extended period, remove the batteries to prevent leakage that could damage the device.
Wear protective gear when handling calibration powder to avoid contact with skin, eyes, or inhalation. If contact occurs, rinse with water immediately.
A protective liquid is used during production to keep the probe moist, which may cause salt crystals to form. This is normal and does not indicate that the product has been previously used.

Product Contents

pH Meter x1	AAA Battery x4	pH 4.00 Buffer Powder x2
pH 6.86 Buffer Powder x2	pH 9.18 Buffer Powder x2	50ml Measuring Cup x1

pH Meter x1

AAA Battery x4

pH 4.00 Buffer Powder x2

pH 6.86 Buffer Powder x2

pH 9.18 Buffer Powder x2

50ml Measuring Cup x1

Specifications

Range

0~14 pH

Resolution

0.01 pH

Accuracy

±0.1 pH

ORP

Range

±1000 mV

Resolution

0.1 mV

Accuracy

±0.1% F.S

Temperature

Range

32-122°F (0-50°C)

Resolution

0.1°F (0.1°C)

Accuracy

±0.5°C

Protection Rating

IP67

Power

AAA Battery*4

Dimensions

1.65*1.65*7.52in (42*42*191mm)

Weight

120g (without batteries)

Operation

1. Installing the Batteries

Step 1

Remove the top cover.

Step 2

Gently pull out the battery compartment and correctly insert 4x AAA batteries as shown in the diagram.

Step 3

Push the battery compartment back in and securely replace the top cover. The batteries are now installed.

2. Buttons and Display

Buttons

Button	Short Press	Long Press
Power	Power On – When the device is off. Return to Measurement Screen – When in the settings or calibration menu.	Power Off – When the device is on. Enter Settings Menu – When the device is off.
Mode	Adjust Current Parameters – When in the settings menu.	Temporarily Switch Temperature Units – When in the measurement screen.
Calibrate	Confirm Parameters – When in the settings or calibration menu. Manually Lock Reading – When the reading is not locked. Unlock Reading – When the reading is locked.	Enter Calibration – When in the measurement screen

Button

Short Press

Long Press

Power

Power On – When the device is off.
Return to Measurement Screen – When in the settings or calibration menu.

Power Off – When the device is on.
Enter Settings Menu – When the device is off.

Mode

Adjust Current Parameters – When in the settings menu.

Temporarily Switch Temperature Units – When in the measurement screen.

Calibrate

Confirm Parameters – When in the settings or calibration menu.
Manually Lock Reading – When the reading is not locked.
Unlock Reading – When the reading is locked.

Enter Calibration – When in the measurement screen

Display

The display includes the following elements:

Mode Icon: A solid icon indicates measurement mode, while a flashing icon indicates calibration mode.
Probe Measurement: Displays the probe measurement and temperature readings.
Battery Icon: Displays the current battery level.
Probe Status Icon: A smiling face indicates the reading is locked during measurement; a smiling or sad face indicates whether the probe slope is normal or abnormal during calibration.
Measurement Stability Icon: A solid icon indicates a stable reading, while a flashing icon indicates an unstable measurement.
Calibration Point Icon: Indicates that a calibration point has been successfully completed.

Note	When the reading is locked, both the reagent bottle icon and the smiling face icon remain solid.

Settings Menu

Symbol	Setting	Parameter	Factory Setting	Description
P01	Temperature Unit	°F / °C	°F	Switch the temperature unit for probe reading: °F or °C.
P02	Buffer Standard	USA/NIS(T)	NIS(T)	Switch the type of probe calibration solution: USA (4.00/7.00/10.01) or NIST (4.01/6.86/9.18)
P03	Temperature Calibration	±9°F (±5°C)	0	Calibrate the temperature reading of the probe, with a calibration range of ±9°F (±5°C).
P04	Auto Power Off	5~20 min	5min	If there is no key operation, the device will automatically power off after the set time.
P05	Auto HOLD	OFF, 5~20 s	OFF	After the reading stabilizes for the set time, the device will automatically lock and hold the reading. A short press of the "Calibrate" button can unlock it.
P06	Measurement Mode Switch	pH / ORP*	1-pH	Switch the probe type.
P07	Restore Factory Settings	ON / OFF	OFF	Select "ON" and confirm to clear the pH calibration parameters and restore the settings to factory defaults.

Symbol

Setting

Parameter

Factory Setting

Description

P01

Temperature Unit

°F / °C

°F

Switch the temperature unit for probe reading: °F or °C.

P02

Buffer Standard

USA/NIS(T)

NIS(T)

Switch the type of probe calibration solution: USA (4.00/7.00/10.01) or NIST (4.01/6.86/9.18)

P03

Temperature Calibration

±9°F (±5°C)

Calibrate the temperature reading of the probe, with a calibration range of ±9°F (±5°C).

P04

Auto Power Off

5~20 min

5min

If there is no key operation, the device will automatically power off after the set time.

P05

Auto HOLD

OFF, 5~20 s

OFF

After the reading stabilizes for the set time, the device will automatically lock and hold the reading. A short press of the "Calibrate" button can unlock it.

P06

Measurement Mode Switch

pH / ORP*

1-pH

Switch the probe type.

P07

Restore Factory Settings

ON / OFF

OFF

Select "ON" and confirm to clear the pH calibration parameters and restore the settings to factory defaults.

Note	*ORP probe is currently not supported but will be available in future releases.

3. Calibration

A. Calibration Guide

Calibration	NIST Series	USA Series	Indication	Recommended
1-Point	6.86 pH	7.00 pH	M	Accuracy ≥ 0.1 pH
2-Point Option 1	1st pt: 6.86 pH 2nd pt: 4.01 pH	1st pt: 7.00 pH 2nd pt: 4.00 pH	LM	Range < 7.00 pH Option 2
1st pt: 6.86 pH 2nd pt: 9.18 pH	1st pt: 7.00 pH 2nd pt: 10.01 pH	MH	Range >7.00 pH
3-Point	1st pt: 6.86 pH 2nd pt: 4.01 pH 3rd pt: 9.18 pH	1st pt: 7.00 pH 2nd pt: 4.00 pH 3rd pt: 10.01 pH	MH	Range >7.00 pH

Calibration

NIST Series

USA Series

Indication

Recommended

1-Point

6.86 pH

7.00 pH

Accuracy ≥ 0.1 pH

2-Point

Option 1

1st pt: 6.86 pH

2nd pt: 4.01 pH

1st pt: 7.00 pH

2nd pt: 4.00 pH

Range < 7.00 pH

Option 2

1st pt: 6.86 pH

2nd pt: 9.18 pH

1st pt: 7.00 pH

2nd pt: 10.01 pH

Range >7.00 pH

3-Point

1st pt: 6.86 pH

2nd pt: 4.01 pH

3rd pt: 9.18 pH

1st pt: 7.00 pH

2nd pt: 4.00 pH

3rd pt: 10.01 pH

Range >7.00 pH

B. Preparing Calibration Solution

Step 1: Prepare a Container

Choose a clean container with a minimum capacity of 250ml.

Step 2: Prepare pH 6.86 Calibration Solution

Pour all the pH 6.86 calibration powder into the prepared container.
Add 250ml of distilled water to the container, and stir thoroughly with a clean plastic or glass rod until the calibration powder is completely dissolved.

Step 3: Prepare pH 4.01 and pH 9.18 Calibration Solutions

Repeat Steps 1 and 2, using the corresponding pH 4.01 and pH 9.18 calibration powders.

Note	You can use the included 50 ml measuring cup, filling it five times to reach a total of 250 ml of distilled water.

Note	It is recommended to prepare the next calibration solution only after completing the current pH calibration.

Note	Before preparing calibration solutions again, always clean the container and stirring tools with distilled water and dry them thoroughly to ensure no residue remains, as leftover traces may affect calibration results.

Note	Do not use hard materials to wipe the pH probe’s glass electrode, as this can significantly impact its accuracy and lifespan. After cleaning, either shake the electrode dry or gently pat it with a soft, absorbent cloth.

C. Start Calibration

Step 1

Short press the power button to turn on the pH probe, then long press the CAL button to enter calibration mode: The pH icon will flash, and "NIS" will appear at the bottom.

Step 2

Rinse the probe with distilled water and shake off excess water. Pour the pH 6.86 calibration solution into a 50 ml measuring cup (about 1/3 full) or the pH probe protective cap (between the MAX-MIN marks).

Step 3

Place the pH probe into the pH 6.86 calibration solution, gently stir a few times, and then let it sit still.

Step 4

When the reagent bottle icon in the lower-left corner stays solid and the reading stabilizes, press the CAL button. A smiling face icon will appear, indicating the calibration for this point is complete. The M icon will stay solid, and the next point’s calibration will begin.

Step 5

Start the second point calibration by repeating Steps 1–4, using the pH 4.01 calibration solution. After calibration, the L icon will stay solid.

Step 6

Start the third point calibration by repeating Steps 1-4, using the pH 9.18 calibration solution. After calibration, the H icon will stay solid.

Note	During calibration, do not turn off the pH probe after completing each calibration point. Otherwise, recalibration will be required.

Note	The manual uses NIST standard calibration solutions. If you wish to use USA standard calibration solutions, you must first switch the calibration solution type in the settings.

Note

After completing the three-point calibration, the pH probe will automatically return to the measurement screen. If only a two-point calibration is needed, press the "Power" button after completing the second calibration point to return to the measurement screen. In this case, only LM or MH will be displayed in the lower-right corner.

4. Measurement

Step 1

Short press the power button to turn on the pH probe, rinse the probe with distilled water, and shake off excess water.

Step 2

Place the pH probe into the solution to be measured, gently stir a few times, then let it sit still. The reagent bottle icon will change from flashing to solid, indicating the reading is stable and the measurement is complete.

Note	To make readings easier, you can enable the Auto HOLD feature in the settings or manually press the "Calibrate" button to activate HOLD. A short press of the "Calibrate" button will cancel the HOLD function.

Note

When measuring pure water (such as drinking water, RO water, or distilled water), the pH reading may take longer to stabilize (approximately 1–5 minutes). To speed up the measurement without affecting accuracy, you may add a 3 M potassium chloride (KCl) solution to the pure water at a ratio of 1:1000 (1 ml KCl per 1000 ml of pure water).

Warning

Do not fully submerge the pH probe in the solution.

Maintenance

Probe Cleaning

(1) Daily Cleaning

Before and after each use, the pH probe must be thoroughly rinsed with distilled water or deionized water to ensure accurate readings.

(2) For Stubborn Stains

Use a specialized electrode cleaner or a mild detergent to soak the probe for 30 minutes. Afterward, gently scrub the probe with a soft brush and rinse thoroughly.

Probe Storage

After using the pH probe, always turn off the power and securely attach the probe protective cap to keep the probe moist. Periodically, add 3–5 drops of potassium chloride solution to the circular sponge inside the protective cap.

Note	Never store the probe in pure water (e.g., distilled water, RO water, or purified water) as it may affect the probe’s lifespan.

Note	If the probe has been stored dry for a long time, soak it in potassium chloride solution for at least 24 hours before recalibrating it.

Probe Replacement

The probe is a consumable item, with a typical lifespan of 1 year, depending on usage frequency and maintenance. It is recommended to replace the probe regularly to ensure optimal performance. Follow these steps for replacement:

Step 1

Remove the probe protective cap, unscrew the nut, and then gently pull the old probe out.

Step 2

Insert the new probe, ensuring proper alignment with the pins, then screw the probe in tightly.

Step 3

Soak the new probe in potassium chloride solution for at least 5 minutes, then calibrate it before use.

Note	Only replace with Vivosun designated probes, as they are not compatible with other brands.

Note	Ensure the nut is tightly screwed to prevent leakage.

Troubleshooting

Issue	Reason	Correction
The reading is unstable and changes slowly.	Contaminated probe	Clean the probe bulb.
Clogged junction	Clean the probe bulb, then soak it in KCl solution for at least 24 hours.
Aged probe	Replace the probe
The reading is unstable and changes slowly.	Testing pure water like tap/drinking/RO/distilled water	Be patient, wait for 1–5 minutes to reach a fully stabilized reading. If still not stabilizing, add 3M KCl solution to test water at 1:1000 ratio.
Can not calibrate.	Buffers are inaccurate
Replace buffers.	Contaminated probe
Clean the probe bulb.	Air bubbles around the sensor shield
Make a quick stir in the solution to remove air bubbles.	Aged probe
Replace the probe	Dried-out probe
Soak the probe in the 3M KCl soaking solution for at least 15 minutes.	The reading keeps jumping.	Probe is not fully submerged in the solution
Make sure the probe is immersed into solution at least 1 inch.	Air bubbles around the sensor shield
Make a quick stir in the solution to remove air bubbles.	The reading always remains the same regardless of the solution.	Broken probe
Replace the probe	The reading is still inaccurate even after successful calibration.	Aged probe
Replace the probe	Comparison with other testers, test strips, or drop tests
To compare with other pH meters, make sure to calibrate all testers in the same solution. Test strips or drop tests' accuracy is not comparable to pH meters.	Error Code	ER1: Unable to recognize the buffer solution.
Check if the calibration solution is incorrect or contaminated. Check if the probe is damaged.	ER2: Measurement is unstable. ER3: Calibration not properly written.
Make a quick stir in the solution to remove air bubbles. Wait for the reading to stabilize before confirming.	ER4: Zero potential out of range (±60mV). ER5: Probe slope below 85%.	Check if the calibration solution is correct and recalibrate the probe. Replace the probe.

Issue

Reason

Correction

The reading is unstable and changes slowly.

Contaminated probe

Clean the probe bulb.

Clogged junction

Clean the probe bulb, then soak it in KCl solution for at least 24 hours.

Aged probe

Replace the probe

The reading is unstable and changes slowly.

Testing pure water like tap/drinking/RO/distilled water

Be patient, wait for 1–5 minutes to reach a fully stabilized reading.

If still not stabilizing, add 3M KCl solution to test water at 1:1000 ratio.

Can not calibrate.

Buffers are inaccurate

Replace buffers.

Contaminated probe

Clean the probe bulb.

Air bubbles around the sensor shield

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

Aged probe

Replace the probe

Dried-out probe

Soak the probe in the 3M KCl soaking solution for at least 15 minutes.

The reading keeps jumping.

Probe is not fully submerged in the solution

Make sure the probe is immersed into solution at least 1 inch.

Air bubbles around the sensor shield

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

The reading always remains the same regardless of the solution.

Broken probe

Replace the probe

The reading is still inaccurate even after successful calibration.

Aged probe

Replace the probe

Comparison with other testers, test strips, or drop tests

To compare with other pH meters, make sure to calibrate all testers in the same solution. Test strips or drop tests' accuracy is not comparable to pH meters.

Error Code

ER1: Unable to recognize the buffer solution.

Check if the calibration solution is incorrect or contaminated.
Check if the probe is damaged.

ER2: Measurement is unstable.

ER3: Calibration not properly written.

Make a quick stir in the solution to remove air bubbles.
Wait for the reading to stabilize before confirming.

ER4: Zero potential out of range (±60mV).

ER5: Probe slope below 85%.

Check if the calibration solution is correct and recalibrate the probe.
Replace the probe.

More Information

Visit our website to learn more about the AeroLab P30 pH meter.

If you have any issues or questions, you can also contact us at https://vivosun.com/help/contact-us

Warranty

Vivosun offers a one-year warranty on the AeroLab P30 pH meter purchased directly from us or through our authorized dealers. This warranty reflects our commitment to addressing any manufacturing defects or premature failures that may occur under normal use.

The warranty covers replacement or refund for products that exhibit material defects within one year of the original purchase date. To initiate a claim, customers must provide proof of purchase to verify eligibility.

Please note that this warranty does not cover products that have been misused, abused, or intentionally damaged. It also excludes normal wear and tear or cosmetic imperfections such as minor scratches.

Our products undergo strict quality control and testing, and this warranty is a testament to our confidence in their durability and performance.

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