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💧 Stay ahead of water quality with precision that never sleeps!
The Gain Express 5-in-1 Water Quality Test Meter offers professional-grade, continuous monitoring of pH, EC, CF, TDS, and temperature with a large backlit display. Rechargeable and wall-mountable, it delivers accurate, auto-compensated readings ideal for aquariums, hydroponics, pools, and more, backed by included calibration solutions for reliable performance.








| ASIN | B07T181CK9 |
| Best Sellers Rank | #191,048 in Pet Supplies ( See Top 100 in Pet Supplies ) #284 in Aquarium Test Kits |
| Brand | Gain Express |
| Brand Name | Gain Express |
| Customer Reviews | 3.8 out of 5 stars 302 Reviews |
| Included Components | Battery |
| Item Length | 5.98 inches |
| Manufacturer | Gain Express Holdings Ltd |
| Material | PS (polystyrene) |
| Material Type | PS (polystyrene) |
| Model | WQM-242 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | WQM-242 |
| UPC | 600316550437 |
| Unit Count | 1 Count |
P**A
Worked good till I I submerged them and now don't work
Don't fully submerge cords they pop open and don't work anymore
M**E
ph probe was dry, ec wont calibrate
when i received this there was no damage to the box or shipping container, the ph probe had a tiny plastic cap and was shipped dry. with no moisture the ph reading was off and would not stay stable (compared to a milwaukee mc122 pro that was recently calibrated and had a new probe as well) and the ec calibration was impossible. once calibrated to the 12.88 solution the verification solution would read less than 1, instead of the 1.41 it was supposed to. after cleaning the probe and returning it to the 12.88 solution to double check, it swung up to 13.9. recalibrated to 12.88 and then the verification solution dropped from .9 to .7. this leads me to believe either faulty electronics or very low quality probes. considering the ph probe shipped dry, QC seems pretty low. im returning and going with a different meter.
B**Y
Best tester for the price
Hi after doing a massive search on amazon for meters i stumbled on this magnificent item. straight out the box it is pre calibrated as per the company's specs but also include the calibration solution to fine tune it to your exact needs, This was brought so i no longer have to test my reservoir ph it. now i have accurate reading witch increase my plants hippieness. overall the best product i brought 5 *****'s
Z**L
Must have for any hydro reservoir
Great piece of mind from this unit..do not put inside tent .bright led screen will cause unwanted light
P**R
Great help
I’ve always looked at these meters online and always wanted one but they always seem too expensive. This was the first one that I seen was affordable you do get what you pay for though as the displays on this one are starting to look a little poor after a few months, but this saves me so much guest work to glance down and see where my nutrient reservoir is in regards to pH temperature and ppm
L**A
Nice. A dashboard for the fish tank.
Hey. I like this. I have it wall mounted. It is accurate. I have another pH meter by a different maker and it is amazing how close the numbers are. It tells me it's working. The thermometer is accurate and gets readings similar to three other thermometers in my tank. And the TDS display is right in line with two other hand held TDS meters that I use. I wouldn't hesitate to recommend this.
V**R
Unboxed did not work.
I unboxed this meter for the first time yesterday. I am about to start a new grow, and wanted to try out a new meter. I followed the instructions provided, the PH probe and adjusting screw works well. The EC/PPM probe and adjusting screw does not work. I turned it multiple times to the left and to the right, and it does not adjust the EC calibration settings. I reached out to the seller’s customer service to use my one year manufacturer’s warranty. They asked me to send them a video of what is not working (which I did). They then responded with ways to possibly correct the issue, after trying their suggestions it was clear that the meter is defective due to a manufacturer defect. I am upset by the quality of this product and the customer service. I should not have to go back and forth in order to use the manufacturer warranty I was promised. Due to the poor quality, and malfunctioning out of the box product I have to spend more money to buy another PH meter that actually works and performs like it is supposed to. I would not recommend this meter for any one. I will update this and correct it if the seller helps me get this issue resolved in a timely manner.
C**.
User friendly
Came with calibration powder for pH, easy to calibrate. Life saver for my plants
V**A
Sehr billiges Material!
Ich habe das Gerät am 28.12. Bestellt und heute 29.12.23 bekommen. Leider das einzige positive. Schon beim auspacken ist mir aufgefallen das , das billige Material ist nicht nur ist keine Marke und alles auf englisch geschrieben! Schade um das Geld. Ich habe das Gerät wieder eingepackt und heute noch zurückgeschickt.
A**A
Un desastre de producto
Es de muy mala calidad, no fiable en cuanto a los parámetros pH, dureza y la temperatura marca más de dos grados por encima de la realidad. Resumiendo, porque estoy por encima del plazo de devolución, de lo contrario ya no lo tendría.
C**N
Water test equipment
Been using on my koi pond now since purchase and performed good
E**U
Works great
This is a110 V humidity controller for our greenhouse. Easy to use.
D**S
non si può regolare continui sbalzi di ph…
ho provato a fare un regolazione del ph.. ma come si può vedere dal video non è stabile per nulla.. non si può assolutamente calibrare non è neanche buono per la temperatura… ci vuole coraggio a mettere in vendita sto coso!!! restituitemi i solei e pure alla svelta!
Trustpilot
3 weeks ago
2 weeks ago