💧 Why is calibration vital ?
In aquariums, a pH probe is your only way of monitoring the water's acidity. Over time, biofilm and natural wear and tear cause the reading to drift. A poorly calibrated probe might indicate a pH of 7.0 when it's actually 6.5, which could lead to an incorrect CO2 injection or shutdown, endangering your fish.
The JBL PROFLORA CO2 CALIBRATION SET is the gold standard for accurate calibration. Unlike powders that require dilution (which are cumbersome and less precise), this kit contains ready-to-use liquid buffer solutions, guaranteeing laboratory-grade accuracy.
🤓 A rigorous 3-step protocol
This kit contains everything needed for complete maintenance of your probe :
- Distilled Water (50ml) : Essential for rinsing the probe between measurements. Never use tap water (too hard) or aquarium water for rinsing, as this will affect the subsequent calibration.
- Buffer Solution pH 7.0 (50ml) : The neutral point, the first step in any standard calibration.
- pH 4.0 Buffer Solution (50ml) : The acid point, which allows us to define the "slope" of the measurement curve for maximum accuracy in fresh water.
Although designed by JBL, this calibration kit is chemically universal. It works perfectly for calibrating the following probes : JBL (ProFlora Sensor), Dennerle, Milwaukee, Eheim and all electronic pH meters (including test pens) requiring two-point calibration (pH 7 and pH 4).
🧪 Precision mechanics for your aquarium
A pH probe is a living instrument. Composed of an electrolytic gel and a porous glass membrane, it begins to chemically "age" from the moment it's first put into water. Without regular recalibration using certified reference solutions, your control computer (JBL, Dennerle, or other) will operate your CO2 injection "blindly," risking dangerously acidifying the water.
The JBL PROFLORA CO2 CALIBRATION SET provides you with the 3 essential liquids to perform a "2-point" calibration, the only scientifically recognized method for planted aquariums.
1. The "Zero Point" (pH 7.00 buffer)
All pH probes worldwide are designed to deliver a voltage of 0 mV at a pH of 7.0. This liquid allows your computer to reset the probe and correct for the offset caused by aging. If your probe reads 7.1 in this liquid instead of 7.0, the computer records this error and corrects it for all future measurements.
2. Acid Precision : The "Slope"
Once the neutral point is set, the computer must be told how the probe reacts in an acidic environment.
Why pH 4 and not pH 10 ? In freshwater aquariums (and especially in aquaponics or planted tanks), we generally aim for a slightly acidic pH (between 6.5 and 6.9) to promote nutrient absorption by plants and protect fish.
Calibrating to pH 4 allows the "slope" of the measurement curve to be calculated. This ensures that the reading will be ultra-precise in the critical zone where CO2 is injected.
3. The Secret to Reliability : Distilled Water
This is often the overlooked element, yet it's included in this JBL kit. It's used exclusively for rinsing.
The Danger : If you remove your probe from the pH 7 solution and immerse it directly in the pH 4 solution without rinsing, you will contaminate the second bottle! A single drop of pH 7 is enough to transform your pH 4 solution into pH 4.2, throwing off your entire setting. The distilled water provided is chemically neutral and pure for cleaning the probe between each bath without altering the solutions.
⚠️ When do you absolutely need to calibrate ?
- New installation : A new probe should always It needs to be calibrated before first use (it has been stored for a long time).
- Unstable reading : If the value displayed on your screen keeps jumping around (e.g., going from 6.80 to 6.95 in one second).
- Slow response time : During calibration, if the computer takes more than 2 minutes to stabilize the value in the buffer liquid, it is a sign that your probe is clogged or at the end of its life.
- After cleaning : If you have had to clean the probe head due to algae or limescale, the membrane is "bare" and requires immediate recalibration.
- Prolonged power outage : Some older controllers lose their calibration after a prolonged power outage.
💡 Our tip for saving on the product
The buffer solutions are for single use only once removed from the bottle. To make your JBL kit last longer :
- Do not immerse the probe directly in the bottle !
- Pour only a few milliliters (just enough to cover the glass ball at the end of the probe) into a small, clean container (such as the test tubes provided or a water bottle cap).
- Discard this small volume after use. Never pour it back into the main bottle to avoid contaminating the remaining stock.
