--- product_id: 291677106 title: "Karter Scientific 208V2 Plastic Test Tube Rack for 12/13mm Tubes, Holds 50, Detachable (Single)" brand: "karter scientific" price: "301703₫" currency: VND in_stock: true reviews_count: 12 url: https://www.desertcart.vn/products/291677106-karter-scientific-208v2-plastic-test-tube-rack-for-12-13mm store_origin: VN region: Vietnam --- # Fits 12-13mm tubes Detachable design Holds 50 tubes Karter Scientific 208V2 Plastic Test Tube Rack for 12/13mm Tubes, Holds 50, Detachable (Single) **Brand:** karter scientific **Price:** 301703₫ **Availability:** ✅ In Stock ## Summary > 🔍 Elevate Your Experimentation Game! ## Quick Answers - **What is this?** Karter Scientific 208V2 Plastic Test Tube Rack for 12/13mm Tubes, Holds 50, Detachable (Single) by karter scientific - **How much does it cost?** 301703₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/291677106-karter-scientific-208v2-plastic-test-tube-rack-for-12-13mm) ## Best For - karter scientific enthusiasts ## Why This Product - Trusted karter scientific brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Reliable:** Constructed from high-quality plastic, built to withstand the rigors of daily lab use. - • **Crystal Clear Clarity:** Transparent design allows for easy visibility of contents, enhancing workflow. - • **Detachable Convenience:** Easily disassemble for cleaning or storage, adapting to your lab's needs. - • **Maximize Your Lab Space:** Efficiently holds up to 50 test tubes, keeping your workspace organized. - • **Versatile Compatibility:** Designed for tubes with an outer diameter of 12mm to 13mm, ensuring a snug fit. ## Overview The Karter Scientific 208V2 Plastic Test Tube Rack is a high-capacity, detachable rack designed to securely hold up to 50 test tubes with an outer diameter of 12mm to 13mm. Its clear plastic construction provides visibility and organization, making it an essential tool for any laboratory setting. ## Description 50-place plastic test tube racks designed to fit a variety of test tube sizes.Designed to hold tubes with an outside diameter ranging from 12 - 13mm. Detachable. Color is CLEAR. Hole diameter is 13.0mm ## Features - For tubes with an OD ranging from 12mm to 13mm - Hole Diameter: 13mm - Color: Clear ## Images ![Karter Scientific 208V2 Plastic Test Tube Rack for 12/13mm Tubes, Holds 50, Detachable (Single) - Image 1](https://images-na.ssl-images-amazon.com/images/I/51rePQCRq8L.jpg) ![Karter Scientific 208V2 Plastic Test Tube Rack for 12/13mm Tubes, Holds 50, Detachable (Single) - Image 2](https://images-na.ssl-images-amazon.com/images/I/41TNBnqrHBL.jpg) ![Karter Scientific 208V2 Plastic Test Tube Rack for 12/13mm Tubes, Holds 50, Detachable (Single) - Image 3](https://images-na.ssl-images-amazon.com/images/I/51N2jwHqVOL.jpg) ![Karter Scientific 208V2 Plastic Test Tube Rack for 12/13mm Tubes, Holds 50, Detachable (Single) - Image 4](https://images-na.ssl-images-amazon.com/images/I/51flMK7yWRL.jpg) ![Karter Scientific 208V2 Plastic Test Tube Rack for 12/13mm Tubes, Holds 50, Detachable (Single) - Image 5](https://images-na.ssl-images-amazon.com/images/I/51P7aMdto0L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best option for API water test tubes *by A***O on Reviewed in the United States on April 9, 2014* Like the other reviewers here I needed something to hold the tubes for my API Freshwater Test Kit. I did not like the plastic holder that the API kit shipped in so I set out to find something better. Looking at the pictures for this rack I was not immediately sold as I do not need to hold 50 test tubes, just 6 or 7. Finding nothing better and knowing that others were happy with the fit for the API specific tubes, I took the plunge and ordered it. It arrived last night and put together in about 10 seconds after I discovered that the 3 levels could only insert one way thanks to a little notch that keeps it from sliding through. My mind starting turning after looking at it for a second and I decided it wasn't good enough as is. I took it out to the garage, busted out the dremel and cleared out the entire back two rows to one large opening and then cleared another gap of six holes out in the front on each of the top two panes. This allowed me to then put in all my API test solutions so I could store everything and not just the test tubes. I used a small tube sanding bit on the dremel and after about an hour or two of working on it I was able to get the lines pretty smooth with no sharp edges and it fit everything perfectly. The end result is a bit flimsier than when it started but not enough to concern me at all. If you have a dremel or small multi-tool and you want something like what I described to hold more than just the test tubes, this rack will work perfectly. I will post a picture to the side so anyone can see how it looks. ### ⭐⭐⭐ Not as pictured and kind of flimsy *by J***A on Reviewed in the United States on February 9, 2019* Like many others, I got this for testing aquarium water - I have multiple tanks and test them all at the same time and this helps me stay organized.Mine arrived intact and was relatively easy to put together. It's a bit flimsy though and doesn't offer much support if you're capping bottles while they're in the rack. It also doesn't line up perfectly and some of the holes are nearly impossible to get a test tube through the second level - even when everything is seated properly.The other disappointment for me was color. The pictures show a clear rack which I would've preferred. Instead I received translucent blue. This means I can't gauge my results at a glance as the color of the rack distorts the color in the tubes. If you're using this for aquarium testing, this means your ammonia test looks a bit green even when levels are perfect - I stopped looking at the tubes until it was time to pull them out and compare because this was making me a little anxious! ### ⭐⭐⭐⭐⭐ Once together it's great! Great for testing and drying the tubes of the API Test Kit! *by C***A on Reviewed in the United States on February 4, 2019* UPDATE: OMG what a pain in the ass to put together! But, don't give up! Once it's together it is great for testing all my water parameters at once. And because of the rows, I can pretty much test a whole bunch of tanks all at once. And when drying the test tubes I just place them upside down so they drain out. It's totally worth the price!!I'd LOVE to say this is a great product for a great price, which it would be IF I could put it together!!! It arrived unbroken, contrary to other reviewers. So, that was great, I figured out how to put it together with no directions, also fine. But for goodness sake. IT WILL NOT GO TOGETHER!!!!!!!!!!!! I have slid each part off and on in each slot on each side but there is one piece that will not slide past the notch. ALL the others I had to push fairly hard to do the same, but on this one, I would have to push it so hard that it would break. Not seeing how to contact seller or I would. If I force it in place it WILL break. What the hell guys! Cmon! I'll keep trying, but it shouldn't be this difficult. I will gladly rescore this to 5 Stars once together as it is PERFECT for what I want (doing multiple API tests at once). --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/291677106-karter-scientific-208v2-plastic-test-tube-rack-for-12-13mm](https://www.desertcart.vn/products/291677106-karter-scientific-208v2-plastic-test-tube-rack-for-12-13mm) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-24*