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Description
Apera Instruments LabSen 331 POM-Body pH Electrode for Wastewater Treatment, BNC ConnectorApera Instruments LabSen 331 POM Body pH Electrode for Wastewater Treatment, BNC Connector Backed by proprietary Swiss sensor technology and materials, Apera Instruments LabSen 331 POM body pH Electrode is designed for testing complex water solutions such as wastewater, emulsion, suspension, and solutions containing protein and sulphide. The POM body of the electrode makes it highly resistant to various kinds of corrosions. Polymer Electrolyte The
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.1 ★★★★★
Based on 304 reviews
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Product Reviews
★★★★★ 3
Picture is misleading
Color: RYLCC-BLK
Great product! Good quality! The picture of the product is a little misleading as it looks like there are 2 tubes instead of one.
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Reviewed in the United States on March 26, 2024
★★★★★ 5
Perfect sized wrist-rest!
Size: Compact, Size: Compact
Great wrist-rest! Very squishy and feels comfortable & cool even after hours at the computer. The rubber gripper bottom is effective & it never shifts around for me. Also, love that it fits the length of my 75% keyboard & my boyfriends 60% Wooting 60HE keyboard perfectly
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Reviewed in the United States on February 17, 2026
★★★★★ 5
Very Pleased!
Size: Full Size
Review for: Cooling Gel Wrist Rest Pad -Full Size 18"- Memory Foam Palm Rest with Non-Slip Footpad - Ergonomic Design Wrist Support - Desk Keyboard Accessory Gaming Gear (Large-Full Size). I've had this for a week and I'm impressed! There is no skimping on quality, which is rare nowadays. It is made extremely well, solid yet soft. I love the feel of the outer cover. It's comfortable and stays in place. And let me add... I'm putting it to the test. I have a rolling over-bed/couch desk. It has a raised 1/4" lip around the top. I put this wrist-rest on top of that lip. So far there's not any wear across the bottom of this wrist-rest. And that's with me using it for my wrists... and my elbows. It far surpasses the last rest I bought. From my experience, many sellers slap the phrase "memory foam" on their products when they are not. That's NOT the case here. This rest immediately bounces back to its original shape. It's true memory foam! It's so comfortable that I forget it's there yet I enjoy the comfort immensely. Also, it has no smell. ***From my experience so far... I highly recommend this product!
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Reviewed in the United States on April 8, 2024
★★★★★ 4
Comfortable and functional, but beware of cardboard/mdf insert
Size: Compact
I’ve been using this wrist rest for a bit now, and for the most part, it does exactly what it’s supposed to do. It provides a comfortable amount of support for my wrists during long typing sessions, and the cooling gel aspect is definitely a nice touch that adds to the overall comfort.
That said, there are a couple of drawbacks to keep in mind. The surface seems to attract dirt and grime pretty quickly, so you’ll need to wipe it down often to keep it looking clean. More importantly, the build quality of the base is disappointing. I believe its a cardboard inserted into the bottom, which snapped very easily when I was just barely bending it while cleaning it. It’s a shame because the rest of the product is great, but I really wish they had used a more rigid, durable material for the bottom instead of whatever this cardboard/mdf is. This is why I’m giving it 4 stars.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Appears to be of high quality
Size: Full Size
Nice. I like the height. It's comfy and firm.
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Reviewed in the United States on April 24, 2026
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