I need a gold and metal detector machine with high accuracy for analyzing gold purity and metal composition. The device should be portable and capable of providing precise density measurements. Please specify the technical specifications and detection capabilities of your XRF-based equipment.

I need to purchase an electronic device for testing gold purity with 0.01g precision. My budget is strictly limited to $300 USD. The product must cover measurement ranges from 6K to 24K gold density. Please provide your best price while meeting these specifications. Payment will be processed through PayPal. Priority given to suppliers who can offer discounts or promotions.

I need a testing device to check for broken copper strands inside insulated wires. The equipment must be capable of detecting internal wire fractures without damaging the insulation. Looking for compact and portable solutions for quality control in electrical installations.

Requirement for compact eddy current-based gold testing device with the following specifications:
1. Portable form factor for jewelry karat and purity analysis
2. Communication interface (USB/UART/Bluetooth) for microcontroller connectivity (e.g. ESP32)
3. Real-time signal output and raw measurement data access
4. Technical documentation and calibration support
5. Custom data processing integration capability

Additional requirements:
- Product customization options
- Pricing details
- Delivery lead times
- Technical protocol specifications

Order quantity: TBD (multiple units planned after product verification)
Budget: Flexible based on technical compliance

Im looking for a device to test gold only 22,24 karat ( gold detector)