--- product_id: 6629443 title: "Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1)" price: "B/.24" currency: PAB in_stock: true reviews_count: 13 url: https://www.desertcart.com.pa/products/6629443-plastic-test-tube-rack-for-15-18-mm-tubes-hole store_origin: PA region: Panama --- # 18.7mm hole diameter fits 15-18mm tubes Detachable 3-layer modular design Holds 50 tubes securely Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1) **Price:** B/.24 **Availability:** ✅ In Stock ## Summary > 🧪 Elevate your lab game — organize like a pro, impress like a boss! ## Quick Answers - **What is this?** Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1) - **How much does it cost?** B/.24 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/6629443-plastic-test-tube-rack-for-15-18-mm-tubes-hole) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Stable & Secure:** Smallest holes at the bottom keep tubes upright and prevent tipping, so your samples stay safe. - • **Durable Yet Lightweight:** Made from lab-grade polystyrene, combining strength with portability for on-the-go professionals. - • **Modular & Detachable Design:** Three-layer rack with easy slide-in shelves for customizable organization and compact storage. - • **Max Capacity, Max Efficiency:** Holds up to 50 test tubes, perfect for busy labs or creative projects. - • **Precision Fit for Versatility:** 18.7mm holes accommodate tubes from 15mm to 18mm outer diameter, ensuring a snug, stable hold. ## Overview This Karter Scientific plastic test tube rack holds 50 tubes with an 18.7mm hole diameter, fitting tubes from 15 to 18mm OD. Its detachable, three-layer design offers modular organization, crafted from durable, lightweight lab-grade polystyrene. Ideal for labs or creative sample storage, it ensures stability and portability without autoclavability. ## Description Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1): Science Lab Tube Racks: desertcart.com: Industrial & Scientific Review: Works Great! - This tube rack is awesome! It is sturdy and durable. I do not have to worry about the tubes tipping over which is so nice. I appreciate the high quality for the price. Great option for a rack tube. Review: Buen productp - Excelente ## Features - 50 hole,Diameter: 18.7mm/0.74" - These are great for making homemade chapsticks, storing ink samples, test tubes, lip balm, great for holding small cylinders upright - Suitable for test tubes with an OD ranging from 15mm to 18mm - The test tube rack are made of laboratory grade polystyrene, durable and light weight, easy to carry, not autoclavable - The test tube has 3 Layer, 2 slots, each layer has a direction, slide the shelves in from one side, the other side has a lip that stops it, fits very snug. The stand has three layers of holes with a smallest hole at the bottom to keep tubes steady, and the large holes on the second and the top floor ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.4 out of 5 stars 3,027 Reviews | ## Images ![Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/71FFiF6FJUL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: what is the dimensions , L X W X H?** A: 10.25" x ~4.75" x ~2.75"The W and H are a little shorter than mentioned, but I was being lazy. I use this rack for holding test tubes for aquarium chemical level tests. Works pretty well for me. Kind flimsy if you don't put in the middle shelf. It's strong enough for me to carry it with one hand from one of the legs.The top of the first shelf is about .5" off the table. The top of the top shelf is 2.5" off the table. **Q: Would this be able to hold up a tube that's 15 cm long? I want to make sure the tubes I use arent too long.** A: I purchased this rack intending to use it for 15 cm tubes of beads, however I found it is not ideal for tubes that long. It will hold them, but they flop around a lot and this causes the "shelves" of the rack to start sliding out. A taller rack or one with shelves that were fixed in place would be better. **Q: Is this autoclavable?** A: No, it is light duty plastic I would not trust for an autoclave. **Q: can top slide be left off so that essential oil roller vials could fit?** A: Hello Delores, Thank you for your interest in our product. This rack is detachable, therefore, you would be able to take off the top slide. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works Great! *by N***R on April 10, 2026* This tube rack is awesome! It is sturdy and durable. I do not have to worry about the tubes tipping over which is so nice. I appreciate the high quality for the price. Great option for a rack tube. ### ⭐⭐⭐⭐⭐ Buen productp *by B***T on September 16, 2026* Excelente ### ⭐⭐⭐⭐⭐ Ink sample storage! *by S***R on August 23, 2026* Works wonderful for 5ml ink samples! Didn't come with instructions but it was pretty straight forward! I had no issues putting it together wasnt very hard. ## Frequently Bought Together - Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1) - SimPure Centrifuge Tubes 15mL, Conical Tubes Sterile 50 PCS, Polypropylene, Leak-Proof Screw Caps, Plastic Container with Graduated and Write Marks, Non-pyrogenic, DNase/RNase Free, Human DNA-Free --- ## 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.com.pa/products/6629443-plastic-test-tube-rack-for-15-18-mm-tubes-hole](https://www.desertcart.com.pa/products/6629443-plastic-test-tube-rack-for-15-18-mm-tubes-hole) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-10-17*