bluelab pH Probe Care And Use Manual Download Page 7

Page: 7 / 9

English

8.0 Troubleshooting

guide

Trouble

Reason

Correction

pH reading does not

change from solution

to solution

Broken glass bulb,

tube or connector

Check pH probe for damage.

Replace probe.

pH reading inaccurate
(Drift, readings slowly

varying)

Contaminated pH probe /

glassware not clean

Clean pH probe (see section 4.0);

then calibrate.

Wick contaminated,

blocked or dry

Hydrate probe in KCl storage

solution for up to 24 hours, see

section 6.0. Avoid measuring

proteins or oils. Replace unit.

Incorrect pH calibration

Ensure calibration solutions are

accurate. Replace if in doubt.
Wait longer for readings to

stabilize to a constant value

before calibrating.
Calibrate using two points - 7.0 pH,

then 4.0 pH or 10.0 pH.

pH calibration unreliable

Calibrate pH probe.

pH probe damaged or old. Replace pH probe.

Incorrect sample

reading following

successful calibration

Ground loop (often occurs

in process systems)

Verify by removing the sample

from its environment then take

measurement. May require electrical

circuitry to be checked in system.

Wick blocked

Replace probe.

Unsuccessful

calibration

(Low slope <90%)

Buffers inaccurate

Replace buffers.

Glassware not clean

Clean pH probe (see section 4.0);

then calibrate.

Glassware aged

(glassware will not clean)

Replace probe.

BNC

tting wet

Use cloth to dry (note terms of

guarantee).

Noisy - readings

jumping

Poor connection to meter Check probe is connected to

meter correctly.

Contact zone not

immersed

Lower probe into solution at least

2 cm / 1”.

Displays pH 7

for all buffers

Electrical short

Check BNC

tting and cable for

damage.

BNC

tting wet

Use cloth to dry (note terms of

guarantee).

Broken or cracked glass

bulb or tube

Replace probe.

Summary of Contents for pH Probe

Page 1: ...Bluelab pH Probe care 3 Calibration 4 Cleaning the pH probe 5 Storing the pH probe 5 Hydrating the pH probe 6 Technical specifications 6 Troubleshooting guide 7 Bluelab pH Probe care 8 Limited product guarantee 9 Limitation of liability 9 Contact details 9 Care and use guide ...

Page 2: ...dries it dies Keep your pH probe tip wet at all times to avoid permanent damage pH probe storage cap The pH probe tip must not be allowed to dry out Always place the storage cap back onto the pH probe after each use Ensure the cap contains enough Bluelab pH Probe KCl Storage Solution to cover the probe tip pH probe holder suction cup pH probe tip BNC connector Glass tube inside plastic barrel Glas...

Page 3: ...robe storage cap Ensure probe tip is covered by the KCl storage solution in cap Inserting Twisting Attached 2 0 IMPORTANT Bluelab pH Probe care pH probes DO NOT last forever They age through normal use and will eventually fail The life time of a pH probe depends on the environment it is used in and the way that it is treated To receive a long life from your pH probe please ensure you follow the gu...

Page 4: ... dependant on the accuracy and age of the calibration solutions used and use and cleanliness of the pH probe tip Ensure the pH probe has been cleaned and rinse the pH probe tip with clean water between calibration solutions to reduce contamination of the pH solutions Only fresh uncontaminated solutions should be used Calibrate the pH at the same temperature as the solution to be measured ALWAYS ca...

Page 5: ... of the container as this may cause damage to the probe Rinse well under fresh running water to remove all traces of the detergent mixture If the probe tip requires removal of heavy contamination Gently brush around the glassware with a few drops of Bluelab pH Probe Cleaner or mild detergent dishwashing liquid and a soft toothbrush Rinse well under fresh running tap water to remove all traces of t...

Page 6: ...n remove the storage cap Place the pH probe upright in a plastic container Clean the pH probe tip Ensure the probe tip has been cleaned before hydrating See section 4 0 for instructions Add enough Bluelab pH Probe KCl Storage Solution to a plastic container to submerge the pH probe tip Leave to soak for at least 24 hours After hydration always calibrate the pH probe to ensure accuracy 1 2 3 4 Blue...

Page 7: ...able Calibrate pH probe pH probe damaged or old Replace pH probe Incorrect sample reading following successful calibration Ground loop often occurs in process systems Verify by removing the sample from its environment then take measurement May require electrical circuitry to be checked in system Wick blocked Replace probe Unsuccessful calibration Low slope 90 Buffers inaccurate Replace buffers Gla...

Page 8: ...robe care All the tools you need are included in each kit To re stock your care kit choose from the Bluelab Solutions range Bluelab pH Probe KCl Storage Solution is designed to increase response time and maximize the life of Bluelab pH pens and pH probes For best results use the KCl solution for storage of the pH probe Instructions are on the label of the bottle Bluelab pH Pen Bluelab Soil pH Pen ...

Page 9: ...nal sources such as transit damage or weather 6 Repairs or alterations carried out by parties other than Bluelab or its authorised agents 7 Serial numbers defaced or missing TO THE MAXIMUM EXTENT PERMITTED BY LAW THIS GUARANTEE AND THE REMEDIES SET FORTH ABOVE ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES GUARANTEES AND REMEDIES WHETHER ORAL OR WRITTEN EXPRESS OR IMPLIED ANY IMPLIED WARRANTIES...

Search results

Summary of Contents for pH Probe

Reviews:

Related manuals for pH Probe

Brands by name

Popular brands

bluelab pH Probe, Care And Use Manual

Search results

Summary of Contents for pH Probe

Reviews:

Related manuals for pH Probe

Brands by name

Popular brands