Watch the video below to learn solutions of Gold Purity Testing by VRAY
Gold purity testing is fundamentally about precisely determining the true gold content within a sample. At VRAY, we primarily achieve this through X-ray Fluorescence (XRF) technology, a highly accurate and non-destructive method.
Here's a simplified breakdown of the technical principle:
X-ray Excitation: An XRF analyzer emits a controlled beam of primary X-rays onto the gold sample.
Atomic Interaction: When these high-energy X-rays strike the atoms in the gold or alloy, they dislodge inner-shell electrons.
Fluorescence Emission: To regain stability, outer-shell electrons drop into these vacancies. As they do, they emit secondary X-rays, known as "fluorescent X-rays."
Characteristic Fingerprint: Crucially, the energy (wavelength) of these emitted fluorescent X-rays is unique to each specific element present in the sample (e.g., gold, silver, copper, nickel). The intensity of these X-rays is proportional to the concentration of that element.
Detection & Analysis: The XRF spectrometer's detector captures these characteristic X-rays. The instrument then processes this data, identifying the elements and quantifying their percentages in seconds.
This process provides a rapid, precise, and non-damaging analysis of gold purity (e.g., 24K, 18K) and the full elemental composition of the alloy, making it ideal for various applications.
For precise Gold Purity Testing, a range of specialized tools are commonly employed, with XRF Analyzer technology leading the way for non-destructive analysis. The XRF Gold Tester, often referred to as an X Ray Gold Tester or XRF Spectrometer For Gold, accurately determines elemental composition. Options vary from Handheld Gold Tester and Handheld XRF Analyzer (or Gold Tester Gun / Precious Metal Analyzer Gun) offering portability for on-site checks, to robust Desktop XRF Analyzer and Portable XRF Analyzer units suitable for laboratory or workshop use.
Beyond just gold, these versatile XRF Metal Analyzer and Precious Metal Analyzer devices, including a dedicated Gold Testing Machine or Gold Tester Machine, can function as a Silver Gold Tester or even a broader Jewelry Tester and Jewelry Checking Machine. Whether seeking a 24k Gold Tester, or general Gold Quality Testing Machine, an XRF Gold Testing Machine provides rapid, reliable results. These Jewelry Testing Equipment and Jewelry Testing Machine solutions are essential for verifying authenticity and ensuring accurate valuation in the precious metals trade.
Performing gold purity testing with an XRF analyzer is a precise, non-destructive process. Here's a detailed operational guide:
Calibrate Your XRF Analyzer: Before any testing, ensure your XRF machine is properly calibrated according to the manufacturer's instructions. This typically involves running a standard reference material.
Safety First: Always follow radiation safety protocols. Ensure the sample chamber is closed and secure during testing to prevent X-ray exposure.
Clean the Sample: Gently clean the gold item to remove any surface dirt, oils, or coatings that could interfere with accurate readings. A clean, lint-free cloth is usually sufficient.
Positioning: Carefully place the gold item flat in the XRF analyzer's sample chamber. For smaller or irregularly shaped items, use the instrument's designated sample holder or a manual XY platform (if available, like on the VR-T7) to ensure the area of interest is precisely under the X-ray beam.
Focus (if applicable): Some models have a camera (e.g., VR-T7) to help you visually focus on the specific point you want to analyze, especially for jewelry with intricate designs or multiple solder points.
Select Test Mode: Choose the appropriate test mode for gold purity testing on your XRF machine's software interface. This might be a "Gold Mode" or a "Precious Metals Mode."
Input Data (Optional): Some systems allow you to input sample IDs or other relevant data before initiating the test.
Start Analysis: Close the chamber lid securely and press the "Start" or "Analyze" button on the XRF Tester. The instrument will then emit X-rays and collect the fluorescence data. Test times vary by model but are typically very fast (e.g., 30-50 seconds for VRAY units).
Review Elemental Composition: The XRF analyzer's screen will display the elemental composition of the sample, showing percentages of gold (Au), silver (Ag), copper (Cu), nickel (Ni), zinc (Zn), etc.
Purity/Karatage: The software will automatically calculate and display the gold purity, usually in karats (e.g., 10K, 14K, 18K, 24K) or fineness (e.g., 999.9).
Verify Accuracy: Compare the results with expected values or known standards if performing a control check. Pay attention to the reported accuracy (e.g., 0.01% for 9999 gold on VR-T7/S7).
Save & Export: Save the test results, and if needed, export them for record-keeping or printing. Many XRF precious metal analyzers offer data logging capabilities.
Clean Up: Once testing is complete, remove the sample and keep the chamber clean for subsequent analyses.
By following these steps, you can reliably perform gold purity testing with your XRF analyzer, ensuring accurate and efficient results for all your precious metal items.
What did our happy clients say?
VRAY's VR-T7 desktop XRF analyzer delivers unparalleled accuracy! Its 0.01% for 9999 gold precision is truly reliable for our refining needs. The results are consistently spot-on, making our gold purity testing completely dependable. It’s an invaluable and precise gold testing machine.
The range of gold testers VRAY offers is fantastic. We chose the VR-H5 handheld XRF for its portability and impressive 0.03% accuracy. It’s robust for on-site precious metal analysis, and the $15,000-$18,000 price point felt incredibly fair for such a powerful XRF gun. Excellent selection!
VRAY's VR-X5 desktop gold tester at $10,000-$11,000 is incredibly cost-effective. Despite its affordable price, the 0.05% accuracy on 9999 gold is more than sufficient for our jewelry business. It proves that high-quality gold purity testing doesn't have to break the bank. Truly budget-friendly without compromise.
The technical support for our VRAY XRF spectrometer has been exceptional. Their engineers are incredibly knowledgeable, walking us through complex analyses and offering tailored advice for our specific gold testing challenges. It’s not just about the XRF equipment, but the professional and attentive service that stands out.