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Description
Milwaukee MW803 MAX Waterproof Low Range 4-in-1 pH / EC / TDS/Temp TesterMilwaukee MW803 MAX Waterproof Low Range 4 in 1 pH EC TDS Temp Tester with Replaceable Probe The Milwaukee MW803 MAX Waterproof 4 in 1 Tester is designed as an all in one solution for growers. It is accurate to 0. 05 pH, EC TDS to 2% Full Scale and 0. 5C 1F for temperature. A large dual level LCD screen makes reading results easy while a stability indicator and hold function freezes the display. With automatic calibration and 5 memorized calibration
Milwaukee MW803 MAX Waterproof Low Range 4-in-1 pH / EC / TDS/Temp Tester with Replaceable Probe
The Milwaukee MW803 MAX Waterproof 4-in-1 Tester is designed as an all-in-one solution for growers. It is accurate to ±0.05 pH, EC/TDS to 2% Full Scale and ±0.5°C / ±1°F for temperature.
A large dual level LCD screen makes reading results easy while a stability indicator and hold function freezes the display. With automatic calibration and 5 memorized calibration points, the tester can be quickly and easily calibrated to a higher accuracy compared with manual calibration. It is designed with a double junction probe which offers a longer life. The tester is lightweight and fully waterproof to IP67.
Features:
- Fast, easy to read results with large digital dual LCD readout
- Extreme accuracy to ±0.05 pH, EC / TDS 2% Full Scale and Temperature ±0.5 C / ±1 F
- Range 0.00 – 14.00 pH | EC 0 to 3999 uS/cm | TDS 0 - 2000 ppm | Temperature: 0.0 to 50.0 C / 32.0 to 122.0 F
- Lightweight and portable at just 3.5 ounces
- Easy measurement: just place the probe in the sample, gently stir, wait for the stability indication to show a stable reading and then freeze the reading
- Simple push button, automatic 1 or 2-point pH calibration with 5 saved calibration points and simple 1-point EC calibration
- Gel-filled, double junction pH electrode for low maintenance and high performance with exposed temp. sensor for fast readings
- Auto shut off after 8 minutes of non-use
- Fully waterproof to IP67
- Battery life approx. 100 hours of continuous use (batteries included)
Specifications:
- pH Range: 0.00 to 14.00 pH
- EC Range: 0 3999 uS/cm
- TDS Range: 0 to 2000 ppm
- Temp Range: 0.0 to 50.0°C / 32.0 to 122.0°F
- pH Resolution: 0.01 pH
- EC Resolution: 1 uS/cm
- TDS Resolution: 1 ppm
- Temp Resolution: 0.1 C / 0.1 F
- pH Accuracy: ±0.05 pH
- EC/TSD Accuracy: 2% Full scale
- Temp Accuracy: ±0.5°C / ±1°F
- Temperature Compensation: Automatic with ß=0.0 to 2.4%/°C
- Calibration automatic, 1 point for EC and 1 or 2 points for pH
- TDS Factor: 0.45 to 1.00 (conv.)
- Probe: Mi60P (replaceable)
- Environment: 0 to 50°C (32 to 122°F); 100% RH max.
- Battery Type: 4 x 1.5V; IEC LR44, A76 (included)
- Battery Life: approx. 100 hours of use
- Auto-off after 8 minutes of non-use
- Dimensions: 7.9 inches × 1.5 inches (diameter)
- Weight: 3.5 ounces
CARE AND USE
All pH sensors have a limited life and response time gets longer with age. Properly maintaining your PRO pH Tester will give you fast, accurate results for longer.
EC sensors are more robust but can still be affected by residue build up.
Here are a few tips:
- Always store with the cap full of buffer or storage solution MA9015, not water.
- Clean your Tester regularly by soaking in cleaning solution MA9016.
- Calibrate after cleaning and/or storage before testing to adjust for changes in the pH and EC sensor.
- Gently stir the PRO Tester in the sample for a faster result
- Rinse in water after every test.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 951 reviews
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Product Reviews
★★★★★ 4
Definitely not indestructable
Size: Medium/Large, Color: Dog Ness Monster - Large, Size: Medium/Large, Color: Dog Ness Monster - Large
I have a 1-year-old toy fox terrier (Rocky, pictured). He has been chewing on this toy for seven months now; it is one of his favorites. He has been unable to seriously damage the "ocean" portion of this toy, but as you can see from the provided image, the sea serpent has not faired that well. It is missing its snout and smaller portions of the humps. My guess is that the advertiser images showing much larger dogs with "like new" versions of the toy are just that...NEW AND UNCHEWED.
I have not had to clean up bits of this toy from my floor, so I assume Rocky has been swallowing them. My hope is that the yellow material of the serpent is not chemically dangerous when exposed to digestive fluids.
Rocky easily destroys plush toys in a matter of days if not hours and, consumed pieces of a small microfiber blanket that he liked to toss around and play tug-of-war with (past tense as he destroyed it and has since been trashed after I began finding feces-stained undigested pieces of it lying around). Since this toy has survived seven months and has remained recognizable, I have to agree it is durable.
Just beware, if my small toy fox terrier can damage the toy as pictured, expect your large breed chewer to do similar or worse damage. Also, the toy is very heavy! When Rocky drops it down a flight of stairs, it makes a MAJOR thud at the bottom, and sometimes makes me wonder if it might crack the large tile at the bottom.
I cautiously recommend the product.
Note the yellow frisbee in Rocky's picture. It is only a few months old and surprisingly has not suffered any chew damage despite substantial abuse. It appears to bend in the wind like a proverbial reed, evading damage by yielding to pressure.
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Reviewed in the United States on July 5, 2024
★★★★★ 5
Dog loves it! For tough chewers for sure
Size: Medium/Large, Color: Dog Ness Monster - Large, Size: Medium/Large, Color: Dog Ness Monster - Large
Dog absolutely loves it, he’s super rough on all of his toys they usually last about 10 minutes bore they are torn to shreds. It’s lasting through his chewing so I’m happy. It’s also super cute.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Loch Yes
Size: Medium/Large, Color: Dog Ness Monster - Large, Size: Medium/Large, Color: Dog Ness Monster - Large
Cute toy, dog really likes it. I had my doubts when I pulled it out, and honestly so did she, but the soft part bounces, so that got her going. We've had it for about a week. My dog is ~70 lbs and a moderate chewer, and this monster still gets regular play and is holding up well.
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Great toys for aggressive chewers
Size: Medium/Large, Color: Turkey Day Drumstick - Large
These are great toys they last a while they are destroyed after a while but both dogs are aggressive chewers but they last about a year and a half. And they are go to toys they have one that is a shark mouth and they love it I have bought 4. (two of them the pups lost ).
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Reviewed in the United States on December 20, 2025
★★★★★ 4
Durable and Fun, Just Gets a Bit Rough
Size: Medium/Large, Color: Chopper - Large
This is a really good toy overall, especially if you have dogs that love to chew. My dogs were immediately into it—they play with it nonstop, toss it around, and stay entertained for a while, which I love. It definitely holds up better than most toys we’ve tried.
The only reason I’m giving it 4 stars instead of 5 is because over time it does start to fray a bit and gets a little rough, especially with heavy chewing. It’s not completely indestructible, but it still lasts longer than a lot of other toys.
Overall, still a great buy and I would recommend it if your dogs need something tough but fun!
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Reviewed in the United States on April 4, 2026
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