ZP Developers Zone – Pb and Cu Sensors

by | Jun 7, 2025 | Uncategorized

A Comprehensive Guide to Lead and Copper Sensors: Fast, Accurate, and User-Friendly Testing

Introduction

Welcome to our detailed exploration of Zimmer and Peacock’s lead and copper sensors—a fast, reliable solution for water quality testing. Whether you’re a field engineer, a lab scientist, or an environmental professional, this blog will walk you through the sensor’s features, how it works, and best practices for accurate measurements.

Key Features of the Lead and Copper Sensor

  1. No Pre-Calibration Required – The system uses global calibrations, meaning you can start testing immediately without calibration curves.

  2. Fast Results – The assay takes under five minutes, with real-time data processing.

  3. Flexible Dilution Options – Adjustable dilutions (1:2, 1:5, 1:10, 1:100) allow testing across a wide concentration range.

  4. Cloud-Based Data Storage – Results are stored securely and can be exported for reporting and compliance.

  5. Single-Use Sensors – Ensures no cross-contamination between samples.

How the Sensor Works: A Live Demonstration

Step 1: Prepare the Sample

  • For most water samples, mix one volume of sample with one volume of buffer (provided with the kit).

  • The buffer standardizes pH and ionic strength, ensuring consistent readings.

Step 2: Scan the QR Code & Name Your Sample

  • The updated QR code (linked in the video) identifies the test as lead and copper.

  • Assign a sample name (e.g., “Test Lead”) for traceability.

Step 3: Apply the Sample to the Sensor

  • Pipette 50 µL of the prepared sample onto the sensor.

  • The sensor immediately begins data acquisition.

Step 4: Select the Dilution Factor

  • If using a 1:1 mix (sample + buffer), select “2” (1:2 dilution).

  • For higher concentrations, choose:

    • “5” (1:5 dilution)

    • “10” (1:10 dilution)

    • “100” (1:100 dilution)

Step 5: Real-Time Analysis & Results

  • The sensor performs a 4-minute electrochemical analysis, measuring lead and copper simultaneously.

  • Results are displayed on the app and uploaded to the cloud (Julie database) for further analysis.

Example Output:

  • Lead: 61.3 ppb

  • Copper: 381 ppb

Frequently Asked Questions (FAQs)

1. Is Calibration Required Before Testing?

No. The system uses pre-calibrated electrodes, eliminating the need for user calibration.

2. When Should I Use the Lead Buffer?

  • 99% of the time, yes. The buffer controls pH and ionic strength, critical for accuracy.

  • The “1” (no dilution) option is only for pre-treated samples (e.g., from water utilities).

3. What’s the Detection Range?

  • The sensor covers a wide dynamic range by adjusting dilutions:

    • Low concentrations (e.g., drinking water): 1:2 dilution (4–5 ppb lead)

    • High concentrations (e.g., mining runoff): 1:100 dilution (ppm levels)

  • If the reading is “High”, increase dilution and retest.

4. Can I Reuse the Sensor?

No. Each sensor is single-use to prevent contamination.

5. How Do I Handle Very High Concentrations (1–5 ppm)?

  • For 1 ppm lead, use a 1:10 dilution (1 part sample + 9 parts buffer → 0.1 ppm = 100 ppb).

  • For 5 ppm, consider a 1:100 dilution for accurate readings.

Data Management & Reporting

  • Real-Time Cloud Storage: All results are saved with timestamp, operator name, and raw data.

  • Exportable Reports: Generate PDFs for compliance and record-keeping.

  • Advanced Analysis: Scientists can review peak currents, signal quality, and calibration adjustments.

Conclusion

Zimmer and Peacock’s lead and copper sensor offers a fast, reliable, and user-friendly solution for water testing—whether for drinking water compliance, environmental monitoring, or industrial applications.

Contact ZP
Contact ZP