Niton DXL
Know the karat in seconds — countertop XRF with AuDIT plating detection.
Ideal forJewellery shops & gold souk retailersScrap-gold and precious-metal buying countersPawnbrokers & second-hand gold dealersRefineries & assay offices
USA USD 19,877
The Thermo Scientific Niton DXL is a countertop EDXRF precious-metal analyser that reads the composition and karat purity of gold, silver, platinum and palladium in seconds, with AuDIT technology to expose gold plating — non-destructively, without acids.
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7.7 kg
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Overview
The Niton DXL is a countertop energy-dispersive X-ray fluorescence (EDXRF) spectrometer built for one job: telling you exactly what a piece of metal is made of. Place an item in the shielded test chamber, close the lid, and the analyser returns the elemental composition and karat value of gold, silver, platinum and palladium in seconds — no acids, no filing, no cutting and no manual calibration. Thermo Scientific's AuDIT technology flags gold-plated and counterfeit pieces immediately, which is the single most valuable function for anyone buying scrap gold across a counter. One important point: this is a contact assay instrument, not a ground-search detector. It analyses the surface of an object placed inside it and cannot locate buried gold. Excitation comes from a silver-anode X-ray tube running up to 45 kV / 80 µA, paired with a high-performance Si-PIN semiconductor detector and a 4096-channel analyser; the standard analytical range covers 22 elements including all the precious metals. A colour touchscreen and an internal CCD camera make sample positioning straightforward, with an 8 mm measurement area as standard and an optional 3 mm small-spot focus for clasps, settings and solder joints. Onboard electronics hold more than 10,000 readings with their spectra, and results transfer to a PC over USB using Niton Data Transfer software. At 7.7 kg, and able to run from either the AC adapter or a 7.2 V lithium-ion battery pack, it is a countertop instrument that can still travel to a buying room or a souk stall. It suits jewellers, gold buyers, pawnbrokers, refiners and assay offices.
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Key Features
Non-destructive EDXRF assay — no acids, no filing, no cutting and no manual calibration
Karat value and full elemental composition of gold, silver, platinum and palladium in seconds
AuDIT gold-plating detection technology flags plated and counterfeit items immediately
Standard analytical range of 22 elements, covering all the precious metals
Silver-anode X-ray tube up to 45 kV / 80 µA with a high-performance Si-PIN semiconductor detector
Colour touchscreen and internal CCD camera; 8 mm measurement area standard, optional 3 mm small-spot focus
Shielded test chamber of 172 × 184 × 133 mm accepts chains, coins, bars and mounted pieces
Stores 10,000+ readings with spectra, USB transfer via NDT software; runs on AC adapter or a 7.2 V lithium-ion pack
Specifications
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- Detection technology
- Energy-dispersive X-ray fluorescence (EDXRF)
- Instrument Type
- Countertop precious-metal analyser — contact assay, not a ground-search detector
- Key technologies
- AuDIT gold-plating detection· internal CCD positioning camera· optional 3 mm small-spot focus
- Elements detected
- Standard analytical range of 22 elements, including all precious metals
- Target types
- Gold, silver, platinum and palladium jewellery, coins, bars and scrap
- Excitation source
- Silver (Ag) anode X-ray tube, up to 45 kV / 80 µA
- Detector
- High-performance Si-PIN semiconductor detector
- Signal Processing
- 400 MHz ARM 11 CPU with 300 MHz dedicated DSP; 4096-channel MCA
- Measurement Area
- 8 mm standard; optional 3 mm small-spot focus
- Test Chamber
- 172 × 184 × 133 mm (6.9 × 7.2 × 5.2 in)
- Display
- Full-colour touchscreen with internal CCD sample camera
- Sample Preparation
- None — no acids, filing or cutting; no manual calibration
- Data storage
- 64 MB system memory; more than 10,000 readings stored with spectra
- Connectivity
- USB; Niton Data Transfer (NDT) PC software
- Dimensions
- 396 × 206 × 265 mm (15.6 × 8.1 × 10.4 in)
- Weight
- 7.7 kg (17 lb)
- Power
- 110/220 V AC adapter or 7.2 V 4-cell lithium-ion battery pack
- Certifications
- CE, RoHS
- Search Depth
- Not applicable — the analyser reads the surface of a sample in its chamber and does not search the ground
- Country of origin
- USA
What's in the box
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- Niton DXL precious metal analyzer unit
- 7.2 V 4-cell lithium-ion battery pack
- 110/220 V AC adapter
- USB connection cable
- Niton Data Transfer (NDT) PC software
- 8 mm measurement area (standard)
- Adhesive tack for sample positioning
- Spare X-ray windows
Why customers trust AO Detectors
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Frequently asked questions
Can the Niton DXL find gold in the ground?
No. The DXL is a countertop assay instrument: it measures the composition of an object you place inside its test chamber, and it reads only the surface of that object. It has no ground-search capability at all. To locate buried gold you need a metal detector — a pulse-induction or VLF prospecting machine — and the DXL is what you use afterwards to prove that what you recovered really is gold, and at what purity.
How does it tell solid gold from gold plating?
XRF excites the surface layer of a sample, so a well-plated item can look like high-karat gold on a naive measurement. The DXL includes Thermo Scientific AuDIT technology, which examines the spectrum for the signature of a thin gold layer sitting over a different base metal and warns you when a piece is plated. On unusual or heavily built-up items, taking a second reading at a different point — or a traditional cut test on scrap — remains sound practice.
Does testing damage the jewellery?
No. XRF analysis is entirely non-destructive. There are no acids, no filing and no cutting, and nothing touches the piece except the floor of the chamber, so mounted stones, hallmarks and finished surfaces are left exactly as they were. No sample preparation and no manual calibration are required — you simply position the item using the built-in camera and read the result.
Is it practical to run in a shop, and what does it need?
Yes — the DXL was designed for countertop retail use. The sample sits inside a fully enclosed, shielded test chamber rather than in an open beam, and the unit is CE and RoHS certified. It runs from a 110/220 V AC adapter or a 7.2 V 4-cell lithium-ion battery pack, so at 7.7 kg it can also be carried to a buying room or an off-site purchase. Note that national rules on owning and operating X-ray-producing equipment vary — check your country's radiation-protection requirements before importing.
