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Dissolved Oxygen Sensor Membrane Cap
Dissolved Oxygen Sensor Membrane Cap
Dissolved Oxygen Sensor Membrane Cap
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Dissolved Oxygen Sensor Membrane Cap

Marsoni M251S
Sale price$20.00
Pay 4 payments of $5.00 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Dissolved Oxygen Sensor Membrane CapDissolved Oxygen Sensor Membrane Cap This product is a replacement membrane cap for the Gravity Analog Dissolved Oxygen Sensor, which needs to be used in conjunction with the sensor and electrolyte. There is a transparent oxygen permeable membrane on the membrane cap which is easily damaged. Please take care to protect it. Do not touch it with sharp objects or nails. When using it, you need to drip in about two thirds of the electrolyte before you put
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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.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 1808 reviews
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K
Verified Purchase
Kelly Neel
Los Angeles, US
★★★★★ 5
Great toy!
Color: Grass Green, Size: Medium
We have a boxer and pit mix and he destroys everything. This toy however lasted the longest. He played with this every day and he plays very rough. But after 3 months I finally threw it out. It was still in tact but it was about to start falling apart. I will definitely buy another one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
D
Verified Purchase
Denise D.
New York, US
★★★★★ 5
Great for aggressive chewers!
Color: Mixed, Size: Medium
My dachshund pit mix is VERY hard on toys. She is a very aggressive chewer. She loves this toy and so far hasn't destroyed it! I was concerned because the center is softer, but because of the shape she is unable to get a good grip on it to chew it to pieces. Very happy with it so far!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
T
Verified Purchase
Tresa Gregory
Waukegan, US
★★★★★ 5
Great toy
Color: Grass Green, Size: Medium
My dog could choose all kinds of things apart absolutely loves this and it's very sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
C
Verified Purchase
Christina
West Palm Beach, US
★★★★★ 4
Smaller than pictured
Color: Mixed, Size: Medium, Color: Mixed, Size: Medium
It’s a lot smaller than pictured and I have the same dog type as was depicted in the one of the pictures. The dog like it so I guess that’s good. I will not be playing tug of war with him using this. I like my fingers thank you very much. I would say it durable. He destroys most toys in minutes. He did destroy the squeaky part in about 10 minutes so bonus points for that.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 11, 2025
R
Verified Purchase
Richard Morrison
Lexington, US
★★★★★ 5
Great for dogs like to to chew and like squeakers!
Color: Mixed, Size: Medium, Color: Mixed, Size: Medium
Harder to hold up to his bites. He started to pounce on it to make it squeak like he was honking the horn. He likes it and carries it around the house. Its a must buy for medium to large dogs
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2025

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