Bluelab pH Monitor

Instant Peace of Mind!

One quick glance is all it takes. In an instant, the wall mounted Bluelab pH Monitor tells you that your crops' needs are A.O.K. If the red light flashes - it's time to make a change.

The probe is simply placed in a tank or reservoir for constant monitoring, 24 hours, seven days a week.

FREE two year guarantee

 What is it used for?

The Bluelab pH Monitor is used to continuously measure the pH (acidity or alkalinity) of a solution. It is designed to be mounted in a permanent position with the probe simply placed into a tank or reservoir. The reading is displayed on the screen at all times.

How do you use it?

As the monitor is operated by batteries, it can be located anywhere! The Bluelab pH Monitor has an alarm feature, which is indicated by a red flashing light, to let you know that the pH of the solution is outside the desired value. The monitor does need calibrating regularly for peace of mind that it remains accurate.

Take a look at the...

Instruction Manual (english)        Instruction Manual (dutch)

What is pH and why is it important?

pH is the measurement of acidity and its opposite, alkalinity in a solution. Neutral pH is 7.0 pH. Acidity measures below seven pH (7.0pH) with alkalinity measuring above it (7.0pH).

For example: It is important to maintain a hydroponic nutrient solution at a pH level where the elements in the nutrient solution are consistently available to the plant. If the solution is too acidic or too alkaline it can cause “lock up” – a situation which restricts certain elements essential for growth from being absorbed by the root structure. Deficiencies in the required elements become apparent in the plants growth and can lead to crop failure. Additionally the pH of the water we drink is crucial to our health, the pH of a swimming pool is important, not only for our skin and eyes, but also for the efficiencies of sanitisers and pool equipment. Again the pH of the water a fish lives and breeds in is critical to its existence as certain species require a particular pH to survive.

The elements we add to a solution will either increase or decrease the solutions pH measurement. Only accurate measurement of the pH level will allow complete control of the outcome.

What pH range does it have?

2 - 9.9pH

Because the monitor has a broad range, it is crucial that calibration is between two points; pH7.0 and pH4.0. If a reading above pH7.0 is normal, the calibration between pH7.0 and pH10.0 is required.

Some cheaper meters/monitors have a similar range but state that only one point calibration is required....be weary of these products!

For further information see the Technical Specifications

What maintenance does it need?

The monitor needs to be calibrated at least once a month and the probe will require cleaning prior to calibrating to remove any built up nutrient salts or film on the glassware.

One of the most important things to note is that the wetting cap that is supplied with the probe, must be placed back onto the probe tip when the monitor is not in use to prevent the probe from drying out. "If it drys it dies!"

The probe should be stored in pH4.0 solution or KCl (potassium chloride) storage solution.

pH Probe Cleaning Instructions

What could go wrong with the monitor?

The pH Monitor itself is not waterproof, so if it is accidentally dropped into a tank or reservoir this could be detrimental to it's health. The probes however are waterproof...meaning that they may be submerged in liquid, just not up to where they connect to the monitor itself!

If the pH probe is not cleaned regularly, the readings will be lower than you would normally expect.  The reason for this is that salts build up over time on the glassware, especially if the probe is not rinsed after use. A lot like a windscreen of a car...if it is not cleaned then you can't see out to drive...the probes are the same, they can't see the solution they are reading!

However, placing the probe permanently into solution lowers the need to clean as often. Removal every three months and a thorough clean should be sufficient.

See the extra documents below 

Do's and Don'ts     Troubleshooting Guide

What size is it?

113mm (H) x 63mm (w) x 42mm (D)

The probe lead is 2 metres in length

What accessories does it have?

The pH Monitor comes complete with the pH probe, 3 x AA batteries, mounting screws and instructions for use.

The accessories below can be purchased separately when required.

In summary

• continuous reading available
• flashing LED alarm seen at a distance
• ready to wall mount
• large easy to read display
• can be used anywhere as it is powered by batteries
• 2 metre probe length

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