Bài kiểm tra XRF nào là tốt nhất cho đồ trang sức vàng 21k?

For testing 21k gold jewelry, high-sensitivity XRF analyzers equipped with specialized detectors and optimized software algorithms deliver the most accurate and efficient results. Whether you’re operating in a jewelry store, pawnshop, or quality control lab, the ideal XRF test strikes a balance between precision, ease of use, and portability—making VRAY’s line of XRF Máy kiểm tra vàngs a top choice in the industry.

Why 21k Gold Needs a Reliable Testing Method

21k gold is widely used in high-value jewelry across global markets. Unlike 24k gold, it contains other metals such as silver, đồng, or zinc to improve strength and durability. But because its purity sits between 18k and 24k, even a minor testing error can lead to significant valuation differences—which is why XRF testing must be highly accurate.

Traditional methods like acid testing are outdated and risky for valuable pieces. They’re destructive, subjective, and can’t reliably distinguish between 21k and alloys that are close in composition. XRF, mặt khác, offers không phá hủy, repeatable results in just seconds, making it the preferred solution.

What Makes a Great XRF Test for 21k Jewelry?

To accurately test 21k gold, các Máy phân tích XRF must meet the following requirements:

• Precise purity detection: The ability to detect small changes in gold concentration (down to 0.001%) is critical.
• Elemental sensitivity: Since 21k gold may contain other metals, the detector must reliably distinguish between gold and alloying elements.
• Stability and repeatability: Professional users require consistent results even across repeated tests.
• User-friendly operation: Touchscreen operation, pre-calibrated profiles, and intuitive software reduce training time and eliminate guesswork.
• Portability or lab-grade power: Depending on the use case, the device must either be portable for on-site testing or powerful for lab-grade analysis.

VRAY Recommends: The Best XRF Analyzers for 21k Gold Testing

1. VR-X5 – Precision Meets Performance

For jewelry stores, Nhà máy lọc dầu, and gold buyers looking for lab-level accuracy in a compact benchtop unit, các VR-X5 is the top recommendation. Equipped with a custom-designed Máy dò Si-Pin, it can test over 20 Yếu tố, making it ideal for detecting both gold content and alloys in 21k jewelry.

• Built-in HD screen and integrated computer
• No external devices needed
• Automatic high-voltage protection
• Fast analysis speed for high customer throughput

Its sensitivity and precision make it a preferred choice for professionals who need results they can trust.

2. VR-T9 – Designed for Ultra-High-Purity Analysis

If your business deals in high-value 21k gold and wants the most accurate measurement possible, các VR-T9 is built for you. It delivers a detection precision of ±0.001% and supports customized reports và spectrum comparison for easy identification of alloying trends.

• Ideal for large-volume or wholesale gold analysis
• Can distinguish fine differences in karat value (ví dụ:, 20.8k vs. 21.1k)
• Excellent for quality control, batch analysis, and fraud detection

3. VR-H5 – Portable, Nhanh, and Reliable

For businesses that require on-site testing, such as mobile gold buyers, Hiệu cầm đồ, or field inspections, các VR-H5 handheld analyzer offers unmatched flexibility without compromising performance.

• Lightweight and compact with touchscreen display
• Intelligent battery management and gravity shutdown feature
• Real-time analysis in seconds
• Optimized for low detection limits, ideal for 21k identification

Use Case Scenarios

Jewelry Retailers

Quickly test incoming or traded-in jewelry to verify gold content and prevent fraud. VR-X5 or VR-T6 provides fast and visible results, increasing customer trust.

Refiners and Recyclers

Use VR-T9 or VR-S6 for detailed purity analysis, especially when recovering gold from mixed materials. Accurate karat measurement ensures proper payout calculations.

Pawnshops and Consignment Stores

Avoid the risk of underpaying or overpaying with the VR-H5 handheld unit. Its instant results and easy operation make it a must-have for daily operations.

Sản xuất và kiểm soát chất lượng

Jewelry manufacturers rely on consistency. Sử dụng VR-T7 or VR-T9 to ensure every 21k batch meets karat requirements before going to market.

Why Choose VRAY for Your 21k Gold Testing Needs?

VRAY Instruments has built a reputation as a leader in the XRF gold testing field by prioritizing Chính xác, usability, and technical innovation. With a product range covering both portable and benchtop models, VRAY ensures that professionals at every level—retail, wholesale, Tinh chỉnh, or manufacturing—can find a device that meets their specific needs.

What sets VRAY apart:

• Deep technical experience in precious metal analysis
• Responsive customer support and customization services
• Commitment to accuracy, an toàn, and long-term reliability
• User-friendly designs that require minimal training

Whether you’re testing a single ring or hundreds of jewelry pieces daily, VRAY has the ideal XRF testing solution to ensure you know exactly what’s in your 21k gold.

Câu hỏi thường gặp

Q.1：Can XRF analyzers distinguish between 21k and 22k gold?

MỘT1：Có. High-quality XRF machines like the VR-X5 or VR-T9 can detect purity differences as small as 0.1%, easily distinguishing between similar karat values.

Q2：Is XRF testing safe for delicate or antique jewelry?

A2：Absolutely. XRF is non-destructive and does not require any cutting or scratching of the jewelry. It’s ideal for testing valuable or heirloom pieces.

Q3：How long does an XRF gold test take?

A3：Most VRAY models deliver results within 3–10 seconds, making them perfect for high-volume retail or lab use.

Q4：What’s the difference between a handheld and benchtop XRF analyzer?

A4：Handheld analyzers like VR-H5 offer mobility and are ideal for field testing. Benchtop units like VR-X5 provide higher stability, Chính xác, and often more analytical features.

Q5：Can I test through coatings or plated surfaces?

A5：Some VRAY analyzers, Giống như VR-T5 or VR-T7, are optimized for coated materials using down-top analysis and depth-sensitive detection. Tuy nhiên, surface plating can still affect accuracy, so deeper readings may be needed in certain cases.