bluelab pH Pen User Manual

Contents page
Features 2
Quick guide 2
Before use 3
To operate 3
Important - pH pen probe care 4
Cleaning 5
Battery replacement 5
Hydration 6
Calibration 6
Error messages 7
Troubleshooting guide 7
Technical specications 8
Bluelab Probe Care Kit - pH 8
Bluelab pH Probe KCl Storage Solution 8
Bluelab limited warranty 9
Contact details 10
Care and use guide
a handy solution made easy
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bluelab pH Pen Specifications

General

Measurement Range	0.0 - 14.0 pH
Accuracy	+/- 0.1 pH
Resolution	0.1 pH
Automatic Temperature Compensation	Yes
Power Source	1 x AAA battery
Waterproof	Yes
Waterproof Rating	IP67
Calibration	Two-point calibration
Temperature Range	0 - 50 °C (32 - 122 °F)

Summary

Quick guide

Power button and hold function

Controls for turning the pen on/off and holding readings. Short press to turn on/hold.

Before use begins

Hydration procedure

Soak the pH pen tip in KCI storage solution for 24 hours before first use.

Initial calibration

Perform calibration before starting to use the pen for accurate readings.

To operate

Powering the pen on and off

Instructions for powering the pH pen on and off. Automatic shut-off conserves battery.

Measuring pH readings

Remove storage cap, place probe in solution, and wait for reading stabilization.

Holding the current reading

pH pen probe care

Storing the pH pen tip

Keep the probe tip moist using KCI storage solution in the wetting seal of the cap.

Long term storage guidelines

Procedure for dried-out probes

Rehydrate probe in KCI solution for 24 hours and recalibrate to check for damage.

Critical probe handling precautions

Avoid drying the tip, knocking the pen, touching the glass bulb, or extreme temperature changes.

Cleaning the pH probe

Rinsing the probe tip

Cleaning with detergent solution

Removing heavy contamination

Post-cleaning calibration requirement

Battery replacement procedure

Removing the old battery

Checking for corrosion

Inserting the new battery

Ensuring waterproof seal integrity

Securing the battery cap

Hydration of the pH pen

Preparation for hydration

Submerging the probe tip

Soaking duration

Post-hydration rinse and calibration

Calibration procedure

When calibration is required

Calibrate before first use, after cleaning, hydration, battery change, or if readings are off.

Preparation for calibration

Clean probe with Bluelab cleaner, rinse, and turn pen on. Use fresh calibration solutions.

Calibrating to pH 7.0

Place probe in pH 7.0 solution, press 'cal' until 'CAL' displays, then wait for completion.

Calibrating to pH 4.0 or pH 10.0

Rinse probe, place in pH 4.0 or 10.0 solution, press 'cal' until 'CAL' displays, then wait.

Successful calibration indicator

A check mark appears on screen after successful calibration, disappearing after 30 days.

Importance of two-point calibration

Always calibrate to two points, starting with pH 7 first, then pH 4 or 10.

Error messages

Temperature range errors

pH range errors

Calibration failure message

Hardware error indication

Troubleshooting guide

Drift - readings slowly varying

Caused by dirty glassware or contaminated wick. Soak probe in KCI solution.

Similar pH reading in all buffers

Possible causes include broken glassware, inaccurate buffers, or dirty glassware.

Unsuccessful calibration issues

Troubleshoot by cleaning glassware, checking probe hydration, or replacing buffers.

Noisy or jumping readings

Displaying pH 7 for all buffers

Incorrect sample reading after calibration

Could be a ground loop issue. Verify by measuring in a glass beaker.

Bluelab Probe Care - pH

Importance of probe cleaning

Bluelab pH Probe KCI Storage Solution

Purpose of KCI Storage Solution

Recommended usage for storage