--- product_id: 809346931 title: "Gold Purity Testing Machine, Digital Electronic Gold Purity Tester Machine, Gold Densimeter, Density Upper And Lower Limits, Battery + Power Dual Mode, Weighing Precision 0.01g 0.005g MDJ-300A" brand: "lhuitui" price: "SAR 110" currency: SAR in_stock: false url: https://www.desertcart.com.sa/products/809346931-gold-purity-testing-machine-digital-electronic-gold-purity-tester-machine store_origin: SA region: Saudi Arabia --- # 0.001g/cm³ density accuracy Dual battery + power mode 0.005g ultra-precise weighing Gold Purity Testing Machine, Digital Electronic Gold Purity Tester Machine, Gold Densimeter, Density Upper And Lower Limits, Battery + Power Dual Mode, Weighing Precision 0.01g 0.005g MDJ-300A **Brand:** lhuitui **Price:** SAR 110 **Availability:** ❌ Out of Stock ## Summary > ⚡ Unlock the true value of your gold in seconds — precision meets portability! ## Quick Answers - **What is this?** Gold Purity Testing Machine, Digital Electronic Gold Purity Tester Machine, Gold Densimeter, Density Upper And Lower Limits, Battery + Power Dual Mode, Weighing Precision 0.01g 0.005g MDJ-300A by lhuitui - **How much does it cost?** SAR 110 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/809346931-gold-purity-testing-machine-digital-electronic-gold-purity-tester-machine) ## Best For - lhuitui enthusiasts ## Why This Product - Trusted lhuitui brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-in-One Testing Powerhouse:** Integrated transparent water tank, anti-floating racks, and accessories for testing everything from gold to ceramics. - • **Portable & Powerful Dual Mode:** Rechargeable battery plus AC power ensures reliable lab precision or on-site convenience anytime, anywhere. - • **Smart Calibration & Data Ready:** Auto zero-point calibration with buzzer alerts and RS232 interface for seamless data export. - • **Precision that Protects Your Assets:** Leverages HBM sensor & Archimedes principle for non-destructive purity testing in just 5 seconds. - • **Built to Endure, Designed to Impress:** Industrial-grade corrosion-resistant frame with customizable water tanks for versatile testing environments. ## Overview The MDJ-300A Digital Electronic Gold Purity Tester combines ultra-fine HBM sensor technology with Archimedes' principle to deliver rapid, non-destructive gold and precious metal purity analysis. Featuring 0.005g weighing precision and 0.001g/cm³ density accuracy, it supports temperature and solution compensation for reliable on-site or lab use. Its rugged, corrosion-resistant design includes customizable water tanks and dual power modes, making it the ultimate tool for professionals demanding fast, accurate, and portable precious metal testing. ## Description ▶ HBM sensor + Archimedes principle, locks the authenticity and purity of precious metals in 5 seconds, and non-destructive testing protects value!▶ Function1. Temperature compensation and solution settings for accurate on-site operations2. Density upper and lower limits, and with a buzzer device3. Built-in battery and windshield are more suitable for on-site testing4. RS232 interface, can be directly connected to a computer or printer (need to bring your own data cable)▶ Specifications:Power supply voltage: AC100V~240V 50HZ/60HZModel: MDJ-300A, MDJ-600A, MDJ-1200A, MDJ-300S, MDJ-600SWeight range: 0.01-300g, 0.01-600g, 0.01-1200g, 0.005-300g, 0.005-600gWeight accuracy: 0.01g, 0.005gDensity accuracy: 0.001g/cm3Density range: 0.001~99.999g/c m3Result display: density, volume, percentage contentDensity measurement bracket: ABS one-piece injection molding test bracketMeasuring water tank：General: length 15.3cm × width 10.7cm × height 9.3cmCustomizationParameter setting: water temperature setting, measurement medium density setting, density lower limit settingMeasurement type: any irregular solid particle floating bodyTest time: about 5 secondsWorking temperature: 5 - 45℃Temperature compensation: 0 - 99℃Solution compensation: 99.999▶ Packing:Host * 1Measuring water tank * 1Density test bracket * 1Anti-floating rack * 1Tennis ball * 1Beaker * 1Calibration weight * 1Tweezers * 1Power cord * 1English manual * 1▶ Remarks:Anti-floating rack is used to test block products with a density less than 1 (samples floating on the water)Tennis ball and beaker are used to test the density of any irregular particles and particles♥ If you have any questions, please send us an email and we will reply within 24 hours. ## Features - 【High-precision precious metal detection】 Using HBM sensor and 0.5mm ultra-fine hanging wire, using the principle of Archimedes drainage method, the digital electronic gold density meter achieves a measurement accuracy of 0.001g/cm³, which can quickly detect the purity of precious metals such as gold and platinum, and the results are directly displayed on the LCD screen. - 【Intelligent detection system】 Digital electronic gold density meter with built-in temperature compensation and solution density adjustment, automatic zero point calibration with buzzer prompts, fast results in 5 seconds, and RS232 interface supports data export analysis. - 【Industrial-grade durable structure】 The one-piece molded measurement frame makes the digital electronic gold density meter corrosion-resistant and wear-resistant, and different sizes of water tanks can be customized, and it can work stably from jewelry detection to mineral analysis. - 【Multi-function integrated design】 The digital electronic gold density meter is equipped with an integrated injection-molded transparent water tank and a front level, supports particle/block sample testing, equipped with anti-floating racks and tennis accessories, and can accurately measure the density and volume of materials such as rubber and ceramics. - 【Dual power supply for portable use】The digital electronic gold density meter is powered by rechargeable battery + power dual mode, suitable for laboratory and on-site testing. The large LCD screen clearly displays key data such as density and purity percentage. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0G4G24W4X | | Batteries required | No | | Item Weight | 7.7 pounds | | Item model number | ji213d-933324 | | Manufacturer | LHUITUI | | Package Dimensions | 3.94 x 3.94 x 3.94 inches | ## Images ![Gold Purity Testing Machine, Digital Electronic Gold Purity Tester Machine, Gold Densimeter, Density Upper And Lower Limits, Battery + Power Dual Mode, Weighing Precision 0.01g 0.005g MDJ-300A - Image 1](https://m.media-amazon.com/images/I/712rMDLvGGL.jpg) ![Gold Purity Testing Machine, Digital Electronic Gold Purity Tester Machine, Gold Densimeter, Density Upper And Lower Limits, Battery + Power Dual Mode, Weighing Precision 0.01g 0.005g MDJ-300A - Image 2](https://m.media-amazon.com/images/I/71t0AvoiOkL.jpg) ![Gold Purity Testing Machine, Digital Electronic Gold Purity Tester Machine, Gold Densimeter, Density Upper And Lower Limits, Battery + Power Dual Mode, Weighing Precision 0.01g 0.005g MDJ-300A - Image 3](https://m.media-amazon.com/images/I/61ZiQAqTEgL.jpg) ![Gold Purity Testing Machine, Digital Electronic Gold Purity Tester Machine, Gold Densimeter, Density Upper And Lower Limits, Battery + Power Dual Mode, Weighing Precision 0.01g 0.005g MDJ-300A - Image 4](https://m.media-amazon.com/images/I/71fRAzRWEZL.jpg) ![Gold Purity Testing Machine, Digital Electronic Gold Purity Tester Machine, Gold Densimeter, Density Upper And Lower Limits, Battery + Power Dual Mode, Weighing Precision 0.01g 0.005g MDJ-300A - Image 5](https://m.media-amazon.com/images/I/619pP10X6EL.jpg) --- ## 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.sa/products/809346931-gold-purity-testing-machine-digital-electronic-gold-purity-tester-machine](https://www.desertcart.com.sa/products/809346931-gold-purity-testing-machine-digital-electronic-gold-purity-tester-machine) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-06-02*