Bluelab Guardian pH, cF and Temperature Monitor
Mount your Guardian to a wall, or hang it on a support bar near to your nutrient reservoir and main socket.
Connect it to the plug
Submerge the two probes into your nutrient solution
Switch on the power for live and continuous readings
• Let the pH probe tip dry. IF IT DRIES, IT DIES!
• Bend the probe; this will break its internal glass tube
• Knock the probe; this will break its internal glass tube or external glass bulb.
• Plunge a cold pH probe into a hot liquid - sudden temperature changes can crack the glass and permanently damage the probe.
• Immerse in oils, proteins or suspended solids that will leave a coating on the glass bulb
• Kink or bend the lead sharply.
• Try to lengthen the lead on the pH probe.
• Wet the BNC connector at the end of the lead.
Always remove pH probe storage cap before use
1. Grip the top of the cap and gently twist the base one rotation clockwise to loosen slightly.
2. Next slowly slide the cap off the pH probe. DO NOT completely remove the base of the cap from the top of the cap.
3. Store the storage cap in a safe place.
Storing the pH probe
When storing the pH probe, the pH probe tip must be kept moist.
To prepare the pH probe for storage, add enough Bluelab pH Probe KCL Storage Solution to the storage cap so the probe tip is covered.
Then replace the cap and store in a secure place.
DO NOT use RO (Reverse Osmosis), Distilled or De-ionized water.
Pure water changes the chemistry in the reference, causing the probe to die.
If the pH probe has been accidentally allowed to dry out.
You should ‘hydrate’ it for 24 hours in KCL storage solution (never use RO, Distilled or De-ionized water).
Following this, carry out a calibration to check if the probe has already suffered permanent damage.