CCEI Pool Electronic Salt Tester – T SEL Gondo (0 to 9.99 g/L)

Gondo Electronic Salt Tester: Accurate Salt Level Measurement from 0 to 9.99 g/L

The Gondo electronic salt tester is a digital measuring device that instantly displays the salt concentration (sodium chloride) in pool water. It measures from 0 to 9.99 g/L (grams per liter) with an accuracy of ± 1% of full scale, meaning a displayed resolution of 0.01 g/L. This level of accuracy is perfectly suited for monitoring the proper functioning of a salt chlorinator, which typically requires a stable salt level between 3 and 5 g/L depending on the model. The device operates on a 9V battery, features a digital LCD screen, a memory function for the last measurement, and an automatic shut-off to save battery life. It comes with a calibration solution to verify the accuracy of the device before use.

Why measure a pool's salt level with a chlorinator?

A salt chlorinator produces chlorine through the electrolysis of salt dissolved in water. The efficiency of this production depends directly on the salt concentration: if too low, the chlorinator does not produce enough chlorine, and the water turns green. If too high, production becomes excessive, the water becomes irritating to eyes and skin, and the cell's electrodes wear out prematurely. Most residential chlorinators display a salt level on their control screen, but this measurement is often approximate and can drift over time. An independent electronic tester allows you to verify the chlorinator's measurement and obtain a reliable value.

The salt level naturally varies throughout the season. Rain dilutes the salty pool water—a heavy downpour can lower the salt level by several tenths of a gram per liter. Conversely, evaporation of water concentrates the remaining salt, as salt does not evaporate with water. After several weeks of high heat without rain, the salt level can rise by several tenths. Finally, backwashes of the filter discharge salty water from the circuit, which gradually decreases salinity if only fresh water is used to compensate. For all these reasons, it is recommended to check the salt level once a week during the season, and immediately after a period of intense rain or a partial drain.

Measurement Range 0 to 9.99 g/L: Suitable for All Residential Chlorinators

The measurement range of 0 to 9.99 g/L (equivalent to 0 to 9,990 ppm — parts per million) widely covers the needs of residential pools. Most domestic chlorinators operate within a range of 3 to 5 g/L — for example, CCEI Limpido and Oxeo chlorinators recommend a salt level between 3.5 and 4.5 g/L, while some Hayward and Pentair models tolerate up to 5 or 6 g/L. Some low-salinity (less than 1 g/L) or high-salinity (above 8 g/L) chlorinators exist but remain rare in residential use.

The accuracy of ± 1% of full scale means that the device can display up to ±0.10 g/L deviation over the full range. At 4 g/L, for example, the true value can be between 3.90 and 4.10 g/L. This accuracy is largely sufficient for pool use, where the chlorinator's operating thresholds are generally spaced by several tenths of a gram.

Simple to Use: Dip the Probe, Read the Instant Result

Using the electronic salt tester is extremely simple. Turn on the device, immerse the probe in the pool water — preferably at a depth of at least 30 cm to avoid the surface layer which may be less homogeneous — wait a few seconds for the reading to stabilize, then read the result displayed on the LCD screen. The value is displayed in grams per liter (g/L). The device has a memory function for the last measurement, which allows you to remove the probe from the water without losing the displayed result.

For accurate measurements, it is recommended to perform the test when the filtration pump is running, so that the water is well circulated and homogeneous throughout the pool. Avoid measuring immediately after adding salt to the pool: wait at least 24 hours and several filtration cycles for the salt to be completely dissolved and evenly distributed.

Calibration with Supplied Solution: Ensuring Long-Term Accuracy

Like any measuring instrument, the salt tester can drift slightly over time. The supplied calibration solution allows you to check and correct the accuracy of the device before each important use. The calibration solution contains a precisely known salt concentration (usually around 3 or 4 g/L, depending on the manufacturer). Dip the probe into this reference solution: if the device displays the expected value, it is correctly calibrated. If the deviation is significant (more than 0.2 or 0.3 g/L), consult the manual to proceed with device calibration.

Regular calibration is particularly important if you use the tester intensively, or if you notice inconsistent results compared to your chlorinator's display.

Interpreting Results: What to Do Based on Measured Salt Level?

Once the measurement is taken, compare the result to the range recommended by your chlorinator's manufacturer (indicated in the manual or on the casing label). If the salt level is below the recommended minimum, add pool salt to the basin. The amount of salt to add is easily calculated: to increase the level by 1 g/L in a 50 m³ pool, you need to add 50 kg of salt (1 kg of salt per m³ and per g/L). Dissolve the salt by running the filtration for 24 hours.

If the salt level is above the recommended maximum, the only solution is to dilute the water by partially draining the pool and refilling it with fresh water. For example, to go from 5 g/L to 4 g/L in a 50 m³ pool, approximately 10 m³ of salty water must be replaced with fresh water.

If the salt level is within the recommended range but your chlorinator displays a different value, it is likely that the chlorinator's internal measurement is out of adjustment. Trust the independent tester and adjust the chlorinator's settings if possible, or simply note the discrepancy to interpret it in the future.

Automatic Shut-off and 9V Battery: Long-Lasting Power

The tester operates on a standard 9V battery, easily replaceable. The automatic shut-off function turns off the device after a few minutes of inactivity, which preserves battery life. In normal use (one measurement per week during the swimming season), a battery can last several seasons. A low battery indicator appears on the screen when it's time to replace the battery.

• 1 T SEL electronic salt tester
• 1 calibration solution
• 1 9V battery
• 1 storage case
• 1 instruction manual

Shipping within 1 business day

Our packages are shipped daily via DPD, Colissimo, Chronopost, UPS, and DHL and are insured.

All orders placed before noon, Monday to Friday, are shipped the same day, and orders placed after noon are shipped the following business day.

Shipping costs

For mainland France, shipping costs are free for purchases over 150 euros. Below this amount, the delivery cost depends on the weight of your package and the carrier you select.

For international shipments, shipping costs can vary, depending on the destination and the cargo, from 4 euros to over 100 euros.

Returns

You can return your product within the 14-day withdrawal period upon receipt of your order by contacting customer service via email at contact@poolplanet.fr