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Starter Dissolved Oxygen Pen Meter
Starter Dissolved Oxygen Pen Meter
Starter Dissolved Oxygen Pen Meter
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Starter Dissolved Oxygen Pen Meter

Marsoni M251S
Sale price$330.66
Pay 4 payments of $82.67 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Starter Dissolved Oxygen Pen MeterSpecifications Measurement Range 0 19. 9 mg L Measurement Resolution 0. 1 mg L Display Type Digital Dimensions 7. 28" x 1. 5" x 1. 77" Net Weight 3. 88 oz. Protection Rating IP67 Battery Life 200 Hours Temperature Sensor 50 Kiloohm NTC Country Of Origin China
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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
4.1 ★★★★★
Based on 1908 reviews
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Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
2021 self improvement challenge
Natrona Heights, US
★★★★★ 5
Actually cooling and comfortable.
Color: Royal Blue, Size: King
Incredible cases. Soft, super comfortable and actually cooling as claimed. Highly recommended. Love these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
J
Verified Purchase
Janet L. Dolbow
Houston, US
★★★★★ 5
Cool
Color: Pink, Size: Standard
Cooling pillowcases work well, don’t wake up sweaty anymore. Very happy with them. Love the material, comfort and softness!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
M
Verified Purchase
md
Fort Morgan, US
★★★★★ 5
COOL Pillowcases Worth Buying
Color: Champagne, Size: Queen
I bought these to try out, and I was shocked to find they worked out better than my silk pillowcases. I have atopic dermatitis, and I need a pillowcase that doesn't irritate my skin. I also am having hot flashes and need something cool on my face. These pillowcases are perfect for both my conditions. I plan to buy more in different colors. My sons and husband also like it since they are always hot.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
S
Verified Purchase
Susan H Garland
Phoenix, US
★★★★★ 5
Get this If your hot in bed
Color: Champagne, Size: Queen
Very nice and silky.helps keep me cooler.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
E
Verified Purchase
Emily
Pawtucket, US
★★★★★ 4
Cool not cold
Color: Light Gray, Size: Queen
Super silky like material. Comfy and fits pillow perfectly. Wish it could be a more cold then cool.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026

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