--- product_id: 415042578 title: "SBM-20 Geiger-Muller Tube" brand: "mightyohm" price: "RM744" currency: MYR in_stock: true category: "Mighty Ohm" url: https://www.desertcart.com.my/products/415042578-sbm-20-geiger-muller-tube store_origin: MY region: Malaysia --- # Carefully packaged new old stock Individually tested for reliability High sensitivity to beta & gamma radiation SBM-20 Geiger-Muller Tube **Brand:** mightyohm **Price:** RM744 **Availability:** ✅ In Stock ## Summary > ⚡ Stay ahead of the radiation curve with the legendary SBM-20! ## Quick Answers - **What is this?** SBM-20 Geiger-Muller Tube by mightyohm - **How much does it cost?** RM744 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/415042578-sbm-20-geiger-muller-tube) ## Best For - mightyohm enthusiasts ## Why This Product - Trusted mightyohm brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Tested for Trust:** Each tube undergoes rigorous quality checks to ensure accuracy - • **Limited Stock Alert:** New old stock—grab this rare find before it’s gone! - • **Iconic DIY Essential:** The go-to Geiger-Muller tube for cutting-edge radiation projects - • **Lightweight & Durable:** Glass construction at just 0.02 kg for easy integration - • **Precision Radiation Detection:** Detects beta and gamma rays with expert sensitivity ## Overview The SBM-20 Geiger-Muller Tube is a highly sensitive, glass-encased sensor designed to detect beta and gamma radiation. Each unit is individually tested and carefully packaged as new old stock, making it a trusted choice for DIY Geiger counter enthusiasts and professionals seeking reliable radiation measurement. ## Description This is the iconic SBM-20 Geiger-Muller Tube used in many DIY Geiger Counter projects. This tube is sensitive to beta and gamma radiation. Each tube is tested and carefully packaged. ## Features - New old stock. - Sensitive to beta and gamma radiation. - Each tube is tested. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08MJ2Z3H3 | | Best Sellers Rank | #1,505,466 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,151 in Tube Lights & Battens | | Brand Name | MightyOhm | | Colour | Clear | | Country of Publication | USA | | Customer Reviews | 4.9 4.9 out of 5 stars (27) | | Item Type Name | tube | | Item Weight | 0.02 Kilograms | | Manufacturer | 0 | | Material Type | Glass | | UPC | 860005573226 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** MightyOhm - **Colour:** Clear - **Item Weight:** 0.02 Kilograms - **Manufacturer:** 0 - **Material:** Glass - **Net Quantity:** 1.0 Count - **Number of Packs:** 1 - **Specific Uses For Product:** Radiation detection in nuclear facilities, research labs, and emergency response situations - **UPC:** 860005573226 ## Images ![SBM-20 Geiger-Muller Tube - Image 1](https://m.media-amazon.com/images/I/21kyGhjRlxL.jpg) ![SBM-20 Geiger-Muller Tube - Image 2](https://m.media-amazon.com/images/I/41I5-V23ilL.jpg) ![SBM-20 Geiger-Muller Tube - Image 3](https://m.media-amazon.com/images/I/51HpawiBL1L.jpg) ![SBM-20 Geiger-Muller Tube - Image 4](https://m.media-amazon.com/images/I/61RV+w-BMgL.jpg) ## Questions & Answers **Q: Does the data sheet come in English?** A: Hahahaha....no. It doesn't come with a data sheet at all. That being said, a little research into the nature of the device(s) will yield suitable guesstimates. These are low current, fairly low (280 - 350) volt tubes and they're SLOW, so don't expect to get good science out of them. Wikipedia has a little bit of data on them, and a few trial runs with cheap isolation type electronics can give you some solid state circuitry, but they're really designed for the vacuum tube era and mate perfectly with old triodes. Don't try juicing it up, look at the operating curve for the reason why. Good luck to you, they're interesting tech toys. You DO need a really clean DC supply and adequate shielding for the counter, otherwise you'll be swamped with noise. **Q: If the tube is sensitive to gamma radiation, will it also work for X-rays as well?** A: Yes, the tube will detect x-rays, however there are no specifications for x-ray sensitivity so performance is not guaranteed. I will say that other customers are using it to detect x-rays and have been satisfied by the performance. **Q: How do you properly pack/store this device in your luggage? Will anything happen to it if it passes through an X-ray machine?** A: This should not be a problem. The biggest risk is shock or crush damage. Make sure to protect the tube from being accidentally dented or crushed, as the tubes are very fragile! I recommend a sturdy box or plastic enclosure to protect the tube, and sufficient bubble wrap to keep the tube from rattling around inside the box. As an aside, these tubes can be used to detect x-rays, but I do not recommend attempting to this in an airport security line. You can see the kit being used to detect x-rays in several Applied Science videos, including this one: https://www.youtube.com/watch?v=H7ldYhzKAp4&ab_channel=AppliedScience **Q: Is this device tsa approved? i am planning on traveling to ecuador but i am concerned if the tsa will not allow me to take this on a plane.** A: I'm not aware of a TSA regulation that specifically pertains to Geiger counter tubes. However, Geiger Counters are specifically allowed: https://www.tsa.gov/travel/security-screening/whatcanibring/items/geiger-counters ## Frequently Bought Together - MightyOhm SBM-20 Geiger-Muller Tube - MightyOhm Geiger Counter Kit Bundle - Shkalacar Assembled DIY Geiger Counter Kit, DIY Nuclear Radiation Detector Kit with Miller Tube, Portable Geiger Counter, Assembled Radiation Detector System Experimental Module --- ## 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.my/products/415042578-sbm-20-geiger-muller-tube](https://www.desertcart.com.my/products/415042578-sbm-20-geiger-muller-tube) --- *Product available on Desertcart Malaysia* *Store origin: MY* *Last updated: 2026-09-21*