Density Tester DX-600K for Gold and Precious Metals

Precise, non-destructive material analysis based on physical density determination. The intelligent and cost-effective alternative to acid tests and expensive laboratory equipment.

The Challenge of Precious Metal Testing

Determining the precious metal content represents a central challenge in trade, workshops, and collections. Classic testing methods such as acid tests or X-ray fluorescence (XRF) are either invasive (scratching the material), inaccurate, extremely cost-intensive, or require specialized infrastructure.

The DX-600K Density Tester bridges this gap: It enables rapid, reproducible, and absolutely non-destructive analysis of gold, silver, platinum, and their alloys – based on a physical measurement method established for millennia.

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The Measurement Principle (Archimedes)

The analysis is based on Archimedes' principle of buoyancy. Since density is a material-specific parameter, it allows for extremely reliable identification.

Determination of the sample's mass in the air
Determination of the apparent mass in distilled water
Automatic calculation of density from the difference

Based on this, the device automatically determines:

Precious metal content in Karat (for gold)
Purity in percent (%)
Conclusions about alloy components

Areas of Application

Thanks to its intuitive operation, the system is ready for immediate use, even for users without profound metrological knowledge:

Precious Metal Trade & Gold Purchasing: Plausibility checks and rapid incoming goods inspection
Jewelry Making & Workshops: Reliable distinction between solid material vs. plating
Collectors & Numismatics: Non-destructive testing of rare coins
Laboratory Analytics: Ideal pre-selection before elaborate chemical procedures

Testing Methods in Comparison

Method	Advantages	Limitations
Acid Test	Fast, low acquisition costs	Destructive (requires scratch mark), inaccurate, handling of hazardous materials
XRF (X-ray Fluorescence)	Very precise, exact alloy analysis	Very high costs (often >10,000 €), measures only the surface (deception possible)
Density Measurement (DX-600K)	Non-destructive, very precise, economical	Independent of surface, but volume-dependent (Hollow objects can distort the result)

NOTE: Compared to professional laboratory equipment in the range of 7,000–10,000 €, the DX-600K offers remarkably high measurement quality (accuracy up to 0.001 g/cm³) at a fraction of the investment cost.

Practical Application

Step-by-Step User Guide

Measuring with the DX-600K is intuitive and completed in just a few seconds. Proceed as follows:

Preparation: Fill the water tank with distilled water up to the mark. Turn on the device and wait until the scale displays "0.000". If necessary, press the TARE button to zero the scale.

Measurement in the Air: Place the object to be tested (e.g., a gold ring) on top of the dry measuring platform. Once the weight value has stabilized, press the memory button (ENTER).

Measurement in Water: Carefully take the object with the supplied tweezers and place it on the rack under water.
Important: Ensure that no air bubbles form on the object and that the object does not touch the walls of the tank!

Reading the Result: Press the memory button again. The integrated computer will now automatically calculate the density, the Karat content, or the purity level, and display the precise result on the screen.

Tips for Maximum Accuracy: The test object must be clean, dry, and free of grease. Before initial operation, be sure to perform a calibration using the included 100g weight. Use only distilled water.

Technical Specifications

Measurement Accuracy: approx. 0.001 g/cm³
Maximum Capacity: 600 g
Measurement Method: Hydrostatic weighing (Air/Water)
Automatic Calculation: Density, Purity (%), Karat
Additional Function: Can also be used as a high-precision standard scale
Design: Compact, integrated measuring system

Scope of Delivery

Density Tester DX-600K
Windshield with mounting system
Power supply incl. EU adapter
Calibration weight (100 g)
Tweezers and dropper pipette
Certificate and warranty card
Detailed user manual

Conclusion

The DX-600K represents a solid, physically based solution for precious metal analysis and closes the gap between simple testing methods and extremely expensive laboratory technology. For specialist retailers, workshops, and demanding private users, the device offers a precise, economical, and highly practical alternative.

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