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Description
Whatman UN113UORG UniPrep Syringeless Filter, 0.45 um, PTFE filtration medium, 50 per packUP 0. 45uM PTFE 50 PK UniPrep Syringeless Filters are preassembled filtration devices for the filtration and storage of laboratory samples. These devices are quick and easy to use and feature a plunger, Filter, and vial in one unit. They replace syringe coupled filtration devices with single, disposable units. UniPrep devices consist of two parts: a test tube and a Filter plunger. The design incorporates a preFilter and a membrane into the tip of the
UP 0.45uM PTFE 50/PKUniPrep Syringeless Filters are preassembled filtration devices for the filtration and storage of laboratory samples. These devices are quick and easy to use and feature a plunger, Filter, and vial in one unit. They replace syringe-coupled filtration devices with single, disposable units.UniPrep devices consist of two parts: a test tube and a Filter-plunger. The design incorporates a preFilter and a membrane into the tip of the plunger. When the Filter plunger is pressed through the liquid placed in the test tube, positive pressure forces the filtrate up into the reservoir of the Filter-plunger. UniPrep devices function in a similar way to the Mini-UniPrep. However, UniPrep does not contain a septum in the cap and can be used to Filter larger volumes (1 to 5 ml).Integral storage vial saves time and minimizes laboratory waste.Built-in glass fiber preFilter means even difficult samples are quick and easy to prepare.Choice of membranes for wide sample compatibility.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.3 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 1
This is not even chew resistant!!
Color: Brown
If there was an option for ZERO stars that would be this. Within 5 minutes my little 11 pound Havanese had all the ears off, then out came the stuffing. He had the little dog, and a green duck. I had to take the duck away to sew it….then he still had studding everywhere…and that was the little dog. Throwing stuffing and pieces away….I should have put these right back in the bags they came in. In no way ate these even chew “resistant “!!!! Probably just look good onna shelf.👎👎
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Reviewed in the United States on April 10, 2026
★★★★★ 3
Not quite "indestructible"
Color: Green+Brown
These toys are so cute! But, they are NOT for aggressive chewers! 15 minutes and they were ruined. But for kinder chewers...they are adorable.
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Reviewed in the United States on April 15, 2026
★★★★★ 2
Easily Destructed
Color: Green+Orange
My dog destroyed it within a couple of days. The “rope” turned into strings which is dangerous if eaten
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Not as good as advertised
Color: Blue
Chewed up in 20 minutes
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Reviewed in the United States on May 24, 2026
★★★★★ 3
Cute but NOT indestructible
Color: Brown
Not indestructible
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Reviewed in the United States on April 3, 2026