Bluelab® pH Pen

Marsoni

M251S

$116.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Bluelab® pH PenMeasures pH and temperature. Selectable units for C and F. Backlit LCD display. Double junction probe (not replaceable). Successful calibration indicator. Hold reading function and low battery warning. Fully waterproof with auto off function. Automatic temperature compensation. Along with Bluelab pH Probe KCI Solution, Bluelab pH 7 and Bluelab pH 4 Solution Sachets are now included. Range: 0. 014. 0 pH 050C 32122F. Resolution: 0. 1 pH 1C 1F. Accuracy

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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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I loved the color online so I bought as a gift for my kiddo but when it came in the quality was poor. When I went to fill it the zipper got stuck and the stitches around the zipper were already pulling away and had holes starting. The material itself was thin and the color shag was sparse, making it able to be see through. I quickly returned and bought a different brand.

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Reviewed in the United States on April 20, 2026

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Kierra

Grantham, US

★★★★★ 5

Fabulous!

Size: L For Adult, Color: Purple (Cover Only)

This is our 2nd one, the first one was roughed up but still worth it. It’s super soft, you can fit SOOOO MANY STUFFYS IN IT!!!

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Reviewed in the United States on May 13, 2026

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megan budziak

Lowell, US

★★★★★ 4

Super Duper Big

Size: L For Adult, Color: Pink (Cover Only), Size: L For Adult, Color: Pink (Cover Only)

Wowww! I read the reviews about how big it was and looked at the images people posted but that doesn’t do it justice .. this thing is HUGE. I almost wish it was a lil smaller for real..but it’s really comfy , the kid loves it , she uses it as a landing for jumping . Helped clean up so many of her stuffed animals and random extra blankets .. and there’s still so much room left. The only downside is the zipper is of really low quality, you gotta be really careful putting stuff in there cause the opening isn’t that big .

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Reviewed in the United States on January 24, 2026

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amanda

Chelsea, US

★★★★★ 5

Huge for adult sized

Size: L For Adult, Color: Rainbow (Cover Only)

wow is all I can say I should have gotten the child sized one because this one is HUGE ! my daughter loves it but it does take up a lot of room

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Reviewed in the United States on May 26, 2026

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