Ami Gur June-18-2024
First Impression of the GOLDSCOPE SD 515 from Fischer: A Game-Changer in X-ray Fluorescence Measuring Instruments
Recently, I had the opportunity to visit a semi-finished silver products manufacturer who had just acquired the GOLDSCOPE SD 515 from Fisher. Invited to assess this new X-ray fluorescence (XRF) instrument, I brought along some challenging samples to truly test its capabilities.
One of the samples I tested was a tungsten alloy, notorious for causing
confusion in XRF results, especially in precious metals (PM) mode. Some XRF devices tend to mix tungsten with PM elements, leading to inaccurate readings. Another sample was a gold-platinum dental alloy. Given that the energy levels of gold and platinum are quite similar, achieving precise results can be difficult for many XRF machines.
The third sample I tested was a high palladium gold dental alloy, containing 78% palladium and 2% gold, along with gallium and indium. Alloys like this are particularly challenging because some XRF devices in PM mode struggle to deliver accurate results due to the presence of gallium and indium. However, the GOLDSCOPE SD 515 handled this sample with remarkable accuracy, distinguishing it from other XRF instruments.
The GOLDSCOPE SD 515 impressed me right away with its
spacious sample chamber, allowing for easy handling of various sample sizes. The instrument comes with an integrated PC and a large screen, which is a significant advantage. The large display shows the spectrum clearly, making it easy to identify each peak and subsequently analyze the sample with precision.
The accuracy of the GOLDSCOPE SD 515 was particularly noteworthy. It handled the tungsten alloy, gold-platinum dental alloy, and high palladium gold dental alloy with ease, providing clear and distinct readings for each element. This level of precision is crucial for anyone working with precious metals.
Another remarkable feature is the competitive price point of around $25,000, making this advanced technology accessible to more users. Fisher describes the GOLDSCOPE SD series as optimized for fast, cost-effective, and non-destructive analysis of jewelry, coins, and precious metals. Additionally, it is suitable for determining the thickness of gold coatings on sterling silver and rhodium coatings on gold alloys.
The series includes four different instruments designed to meet varying needs, from quick gold transactions to high-precision analysis of precious metals. Key applications include the analysis of jewelry, precious metals, dental alloys, yellow and white gold, platinum, silver, rhodium, alloys, and coatings. The GOLDSCOPE SD 510 and SD 515 models feature a modern silicon PIN detector for high accuracy and sensitivity, while the SD 520 and SD 550 models offer even higher resolution with Silicon Drift Detectors (SDD).
Fisher’s fundamental parameter method allows for analysis without the need for calibration, significantly reducing time and effort. This feature, combined with the instrument’s outstanding accuracy and long-term stability, makes the GOLDSCOPE SD 515 a valuable tool for any precious metals professional.
In conclusion, the GOLDSCOPE SD 515 from Fisher offers exceptional performance, user-friendly features, and competitive pricing. Whether you are dealing with complex alloys or conducting routine precious metal analysis, this instrument stands out as a reliable and efficient choice.
Note: This article reflects my personal experience and the impressive capabilities of the GOLDSCOPE SD 515 during a recent hands-on evaluation. If you’re in the market for a new XRF device, the SD 515 should definitely be on your shortlist.
