Traceable® Conductivity Calibration Standards

Whether you are monitoring pharmaceutical-grade water (USP 645) or testing high-salinity industrial brine, these solutions provide the rigorous documentation and NIST-traceability required for highly regulated environments (ISO, CAP, EPA, and ASTM).

Features:

• Dual Accreditation: Produced by an A2LA accredited ISO 17025 calibration laboratory and ISO 34 reference material producer
• Triple-Labeled Data: Each bottle provides values for:
• Conductivity: Microsiemens (µS) / Micromhos
• Resistivity: Megohms (MΩ)
• Dissolved Solids: Parts per million (ppm)
• "Calibration Cup" Design: The 100 mL polyethylene bottles feature a wide 4.4 cm (1 3/4 in) opening and 8.9 cm depth, allowing you to calibrate the probe directly inside the container to eliminate external contamination
• Comprehensive Documentation: Includes a serial-numbered Traceable® certificate, temperature compensation charts, and detailed calibration instructions

Technical Specifications:

• Accuracy at 25°C: ±0.25 µmhos (1, 5, 10 µS solutions); 0.25% for all others
• Packaging: 100 mL Polyethylene (Single-use) or 473 mL Amber Glass
• Traceability: NIST Standard Reference Materials
• Compliance: Meets EPA 120.1, USP 645, and ASTM D1125 requirements.

Application Insight:

• Low Range (5-10 µS): Essential for checking the purity of deionized water and monitoring pharmaceutical-grade purified water (USP)
• Mid Range (1413 µS): The industry standard for environmental water sampling and freshwater analysis
• High Range (100,000 µS): Specifically designed for heavy industrial applications, brine analysis, and seawater testing

Contamination Warning: Low-range standards (below 10 µS) are extremely sensitive to atmospheric CO₂ and skin oils. For these ranges, the 100 mL single-use bottles are highly recommended to ensure the integrity of the value during the calibration process.