✦ 4-Step Non-Destructive Analytical Protocol
Precision XRF Assay Workflow Science
From raw bullion bars and intricate Zaveri Bazaar jewelry to refinery sweepings (`Kachra`), Fishtro KaratVision spectrometers execute a rigorous 4-step physical and algorithmic workflow in just 8 to 15 seconds—guaranteeing zero material loss (`NDT`) and national mint-grade accuracy.
The 4-Step Analytical Architecture
Every phase combines high-precision Korean optical sensor engineering (`CFAN Technology`) with pre-loaded Indian empirical calibration models to eliminate subjective human error.
01
Phase I • Preparation & Targeting
HD Chamber Alignment & Pin-Point Collimation
Bottom-to-Top Geometry • Motorized Dual/Quad Pinholes (0.1 / 0.3 / 1.0 / 3.0 mm) • 20X/40X Macro Auto-Focus Camera
Step 1 • Sample Loading & Isolation
Targeting Micro-Features Without Sample Preparation
The operator places the precious metal item—whether a 100g gold bar, delicate vermeil necklace, or refinery slag—inside our radiation-shielded chamber (`30 kg metallic chassis`). Using the high-definition `20X / 40X Macro Optical Camera` interface, the operator selects the exact test coordinates and adjusts the motorized multi-pinhole collimator (`0.1 mm to 3.0 mm`) to isolate micro-prongs, soldered joints, or flat bullion surfaces with surgical precision.
- ✓ Sample Geometry: Bottom-to-Top X-ray excitation window
- ✓ Pinhole Options: Fixed 1.0 mm or Motorized Quad (0.1/0.3/1.0/3.0 mm)
- ✓ Macro Targeting: 20X/40X HD Live Video Overlay
- ✓ Chamber Capacity: Accommodates up to 3 kg jewelry items
02
Phase II • Atomic Excitation
Micro-Focus Excitation & Secondary X-Ray Fluorescence
50 kV / 100W Tungsten Target Tube • Inner Shell (K/L Shell) Electron Ejection • Peltier-Cooled FSDD Detection Stage
Step 2 • Physical Fluorescence & Detection
High-Voltage Micro-Focus Excitation (`50 kV / 100W`)
Upon closing the interlocked lid, the system energizes a high-stability `50 kV / 100W Micro-Focus Tungsten (`W`) X-ray tube`. Primary X-rays penetrate the top atomic layers (`Au, Ag, Pt, Cu, Ni, Zn, PGM elements`), knocking inner-orbital (`K and L shell`) electrons out of position. As outer electrons drop to fill these voids, they emit characteristic secondary X-ray photons (`Fluorescence`), which are captured by our thermoelectric Peltier-cooled Silicon Drift Detector (`FSDD / SDD`) at ultra-low energy resolution (`<118 eV to <145 eV @ 5.9 keV`).
- ✓ Detector Core: Peltier-Cooled Fast SDD / Si-PIN Architecture
- ✓ Energy Resolution: State-of-the-art <118 eV – <145 eV FWHM
- ✓ Count Rate Cap: Up to 1,000,000 cps without saturation
- ✓ Thermal Stability: Zero drift under 24/7 continuous operation
03
Phase III • Algorithmic Analysis
FP & Empirical Curve Mathematical Processing
Fundamental Parameters (FP) Engine • Instant PGM Separation (`Ir, Os, Ru, W`) • 5-Layer Plating Analysis (`IS 2112`)
Step 3 • Spectral Deconvolution & PGM Separation
Automatic Adulterant Separation (`<100 ppm`) & Layer Deconvolution
The raw multi-channel pulse-height spectrum is processed in real time by our embedded Fundamental Parameter (`FP`) algorithms and empirical matrix corrections. The software automatically scans for toxic or fraudulent PGM adulterants (`Iridium Ir, Osmium Os, Ruthenium Ru, Tungsten W`) down to `<100 ppm`, cleanly isolating them from the precious gold signature. Simultaneously, for electroplated or vermeil items (`IS 2112`), the algorithm deconvolutes up to 5 overlapping metal layers (`Au / Ni / Ag`) down to `0.01 µm` thickness resolution.
- ✓ Adulterant Separation: Quantitative detection of Ir, Os, Ru, W (<100 ppm)
- ✓ Plating Depth (`IS 2112`): Measures up to 5 overlapping metal layers
- ✓ REACH Compliance: Simultaneously screens Pb, Cd, Ni hazardous elements
- ✓ Algorithmic Core: Pre-calibrated Fundamental Parameters (`FP`) models
04
Phase IV • Certified Reporting
BIS `IS 1418` Output & Digital Certification
Instant Karatage Display (24K, 22K, 18K, 14K) • Macro Spot Stamp Photo • One-Click PDF/Excel Export
Step 4 • Final Certification & Archiving
National Hallmarking Grade Output & Traceability
Within 8 to 15 seconds, the full composition report is displayed on the high-definition monitor. Exact karatage (`24K, 22.0K, 18.0K, 14.0K, 999.9 Fine Gold`), detailed elemental breakdowns (`Au %, Ag %, Pt %, Pd %, Cu %`), and plating layer alerts are permanently logged into the secure database. Assaying & Hallmarking Centers (`AHC`) can generate instant, tamper-proof PDF certificates complete with a live HD macro photograph and crosshair target stamp of the exact tested area.
- ✓ Assay Speed: Full multi-element report in 8 to 15 seconds
- ✓ BIS Standard (`IS 1418`): Certified accuracy for Indian hallmarking centers
- ✓ Photo Archiving: Embeds live HD macro zoom photo on certificate
- ✓ Export Formats: Direct PDF, Excel, and ERP database sync
Operational Safety & Indian Environment Resilience
Fishtro KaratVision spectrometers (`K2, K3, K4, K5 Series`) are designed for maximum operator protection and rugged durability in high-temperature bullion mandis and jewelry manufacturing units.
Zero X-Ray Radiation Leakage
Constructed with thick solid-state metallic labyrinth shielding around the entire analytical chamber. External radiation leakage is strictly verified at `<0.5 µSv/h` during continuous testing, fully complying with international and atomic energy safety norms.
Dual Interlock Cutoff Switch
Equipped with dual mechanical and electro-optical interlock sensors on the chamber lid. If the sample lid is opened even slightly while testing is underway, the X-ray high voltage (`50 kV`) instantly cuts off in milliseconds to eliminate accidental exposure.
Voltage Stability & Low Power (`100W`)
Engineered specifically for Indian electrical conditions. Features robust voltage stabilization (`110-240V AC`) that prevents sensor calibration drift during power fluctuations while consuming minimal power (`100W approx operating draw`).