Bluelab PH Pen Installationsanleitung

FAQ and troubleshooting for the Bluelab pH

Pen

Find answers and solutions to common questions for the Soil

pH Pen, pH Pen, and Bluelab pH probes

In this guide:

•General questions

•Understanding error messages

•Troubleshooting

General questions

My pH product won’t calibrate, what should I do?

The first step is to make sure the glass tip of the probe is both well hydrated and clean.

•Learn how to hydrate your pH pen in our guide

•Learn how to calibrate your pen in our guide

If, after both hydrating and cleaning, your pH pen still won’t calibrate, it may be at the end of its

life. Please reach out to our support team if you have further questions.

My pH reading is stuck on 7 pH, what should I do?

Inspect the glassware for damage. If the pen reading is stuck on 7 pH (or close to that), it is likely

the glassware is damaged. The pH pen likely needs replacing.

My pH probe has accidentally dried out, what should I do?

The probe must be rehydrated for 24 hours in KCI storage solution (never use RO, distilled

or deionised water). Next, carry out a calibration to check the probe hasn’t suffered permanent

damage.

There is a salt crust on my probe –why?

Both the pH pen/probe and the storage cap contain KCl (Potassium Chloride) solution. The result

of a small level of evaporation of KCl is the formation of a salt crust as KCl is a type of salt.

This salt crust is normal and will not harm the probe or meter. Gently wash the salt off under

fresh running water. It is essential to ensure that your probe has sufficient KCl in the storage cap

at all times to remain hydrated.

How long will my Bluelab pH Pen last?

Bluelab's pH products are charged with reference material which expends over time and use. The

average life span of a pH pen is approximately 18 months. Good care will help to maintain your

pen. Follow our guides to proper hydration, regular cleaning and calibration.

The pH pen has a 1-year warranty so if you encounter any issues with your current unit, please

feel free to reach out to us for support.

What is KCl Storage Solution?

Our Bluelab pH Probe KCl (Potassium Chloride) Storage Solution is a storage solution designed

specifically for use with Bluelab pH Pens or pH Probes.

Storage solution is used to ensure a pH probe is kept in ideal conditions during storage, while the

probe is not in use. Read more about KCl solution.

Understanding error messages

Error code

Reason

Correction

Calibration solutions may be

contaminated

Always use fresh calibration

solutions

Temperature under range

Temperature over range

Probe not hydrated or clean

Follow the cleaning and

calibration steps

Probe damaged

Replace the pH pen

pH under range

pH over range

Wrong calibration sequence

Calibrate to pH 7 first, then to

pH 4

Probe damaged

Replace the pH pen

pH calibration failed

Calibration solutions may be

contaminated

Always use fresh calibration

solutions

Probe not hydrated or clean

Follow the cleaning and

calibration steps

Probe damaged.

Replace the pH pen

Hardware error

The pH probe may be

damaged

Check for broken glass on the

tip of the pen’s pH probe.

Consider replacing your pH

pen.

Troubleshooting

Trouble

Reason

Correction

Drift –readings slowly

varying

Glassware not clean

Clean glassware, hydrate, then

calibrate

Wick contaminated or blocked

Soak probe in KCl storage

solution for 24 hours and

retest. Don't measure proteins

or oils with the pH pen. You

may need to replace the pH

pen.

Glassware aged

Replace the pH pen

Unsuccessful calibration

Glassware not clean

Clean glassware

Glassware aged (glassware

won't clean)

Replace the pH pen

Probe not hydrated

Soak the probe in KCl solution

for 24 hours and retest

Noisy –readings jumping

around

Contact zone not immersed

correctly

Lower pen into solution at

least 2cm/1"

Reading stuck on 7 pH

Broken glassware

Replace the pH pen

Incorrect sample reading

following successful

calibration

Wick blocked

Soak probe in KCl storage

solution for 24 hours and

retest. Don't measure proteins

or oils with the pH pen.

Still can’t find what you're looking for? Contact Support

How to take a measurement with the Bluelab

pH Pen

Before you use the Bluelab pH Pen, you need to hydrate the probe tip in KCl storage solution for

24 hours, then calibrate the pen to 2 pH points.

•How to hydrate your pH pen

•How to calibrate your pH pen

1. Turn the pH pen on

Press the power button. To turn pen off, press and hold the power button until “OFF” is

displayed.

Note: The pen will automatically turn off after 4 minutes to conserve battery power.

2. Measure pH

Remove the storage cap, place probe in solution and wait for the reading to stabilise.

3. To hold the reading

To hold the reading on the display, short press the power button. To turn hold mode off, press the

power button again.

4: Measure temperature

If you prefer to take your readings in °C or °F you can change the temperature units. Hold down

the Units button for 3 seconds until the temperature units start flashing. Short press the units

button again to cycle between °C and °F. To exit this mode don’t press anything for 3 seconds.

Note: You can change units while in hold mode by holding down the Units button.

5: Rinse and replace storage cap solution

To ensure accurate pH readings, always rinse the probe in fresh water before replacing the cap.

Add 3-5 drops of Bluelab KCl Storage Solution into the wetting seal of the cap each week. Make

sure the cap is on correctly; it will click when in place.

Important: Keep your probe tip wet at all times to avoid permanent damage.

If your readings aren't what you expect, or the pH pen won't take a reading, follow our

troubleshooting and FAQ guide.

Getting started: The Bluelab pH Pen

Product overview and how to get started

Overview

The Bluelab pH Pen is a hardy, compact, and accurate pH and temperature pen for using in

nutrient solution. Use the pH pen to quickly and accurately know if your solution is too acidic or

alkaline, or too hot or cold. Designed for everyday use, the Bluelab pH Pen helps you to keep

your plants in the optimal pH and temperature range so that your plants can thrive.

Getting started is easy. Follow the instructions to hydrate and calibrate your pen, and submerge

the probe in your nutrient reservoir to view the measurement on the display.

Features

Backlit LCD display

Low battery indicator

Hold reading function

Fully waterproof

Fully guaranteed for 1 year (with proof of

purchase)

Auto-off function

Double junction probe

Automatic Temperature Compensation

(ATC)

Successful calibration indicator

Selectable units for °C and °F

•Register your 1-year limited written warranty with Bluelab

•Download a PDF of the technical specs in English

•Download a PDF of the Bluelab pH Pen manual in your language:

oEnglish

oGerman

oSpanish

oLatin American Spanish

oDutch

oCanadian French

Get started

Get started with the Bluelab pH Pen in 3 easy steps:

1. Hydrate your Bluelab pH Pen.Before first use, you must first hydrate the pH pen in

KCl solution for 24 hours and then calibrate the pen using the calibration guide below.

2. Calibrate your pH pen. Calibrate before first use and return to this guide if you need a

monthly calibration refresher.

3. Take your first measurement. Submerge the probe in your nutrient reservoir to view the

readings on the display. Read this guide for correct usage.

Still can’t find what you're looking for? Contact Support

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