★★★★★ 5
Works as designed
Style: Standard Filter
Works as designed. No issues or defects.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
pH Pen Meter with ISO Certificate
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
pH Pen Meter with ISO CertificateSpecifications Hand Held Bench Model Hand Held PH Range 0 14 pH Data Logging Not Data Logging Not Data Logging Display Type Digital Temperature Measuring Range 32 140F (0 60C) Temperature Accuracy 1. 8F (1C) Temperature Resolution 0. 1F (0. 1C) PH Accuracy 0. 02 pH Resolution 0. 01 pH Dimensions 7. 3" x 1. 6" x 1. 6" (185 mm x 40 mm x 40 mm) Weight 3. 1 oz. Storage Temperature 14F 122F ( 10C 50C)
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- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.1 ★★★★★
Based on 2469 reviews
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Product Reviews
★★★★★ 4
works well for camping
Style: Standard Filter
I’ve used this filter on my camper for years without issues, so I installed one in my outdoor kitchen at home. It was connected to a hose bib and left under constant pressure, feeding a small electric water heater for a sink.
That turned out to be a mistake. Overnight, the top of the filter housing cracked and leaked water throughout the cabinet. No idea how long it was spraying.
This filter works fine for intermittent use (like camping), but it does not appear to be designed for continuous pressure. I would not recommend installing it in a permanent, always-pressurized setup.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Perfect, fits, nice to just have them sent to us.
Style: Standard Filter
Fits the bill. Clean water is so important and we enjoy the ease of having these sent right to us as we don’t live close to physical stores. They’re easy to install and the price is right!
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Easy to install
Style: Standard Filter
Works great in RV
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Nice hose filter for filling hot tubs
Style: Standard Filter
I bought this for filling up my hot tub. It does the trick. Straight tap water was difficult to balance the ph and keep it stable. When I fill the hot tub using the filter, the water is more balanced and easier to maintain. I used it for two 390gal refills before I noticed it was getting slower, so ordered another one. I haven’t used it for drinking water so can’t comment on the taste. It does seem to help with hardness though.
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Reviewed in the United States on May 3, 2026
