A&D Weighing EJ-13 Density Determination Kit

The A&D EJ-13 is an optional accessory that allows compatible A&D EJ Series precision balances to measure the density (specific gravity) of solid materials using the Archimedes principle. It is commonly used in laboratories, educational institutions, jewelry testing, geology, material science, and quality control applications where material identification and density verification are required.

The EJ-13 is designed specifically for the A&D EJ-123 and EJ-303 precision balances. When installed, the balance's built-in density measurement program automatically calculates density after the sample is weighed in air and then in water, providing fast and repeatable results.

The EJ-13 uses the Archimedes buoyancy method, which compares the weight of a sample in air with its apparent weight when submerged in a liquid. The compatible EJ balance automatically performs the density calculation after the required measurements are completed, reducing manual calculations and minimizing the chance of operator error.

The EJ-13 is suitable for measuring the density of many non-reactive solid materials, including metals, plastics, ceramics, glass, minerals, gemstones, and manufactured components. It is an excellent tool for quality control, material verification, and educational laboratory experiments where density is an important physical property.

The genuine A&D EJ-13 is engineered specifically for compatible EJ Series balances, ensuring proper fit, reliable performance, and seamless integration with the balance's built-in density calculation function. Compared with generic density accessories, it offers easier setup, accurate measurements, and dependable long-term performance for laboratory and industrial testing.