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Hach Certified Reference Material CRM Conductivity Standard Solution
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Specifications:
| Application | Water Quality Analysis, Electrochemistry | ||
| Storage Temperature | Room Temperature | ||
| Product Type | Environment Test Reagent | Forms | Liquid |
| Product Brand | Hach | ||
| Product Grade | Analytical grade | ||
Hach Certified Reference Material (CRM) Conductivity Standard Solutions are premium-grade calibration standards manufactured and certified in accordance with DIN EN ISO 17034:2017, the international standard for reference material producers. These CRMs are designed for precise and traceable calibration of conductivity sensors and meters across laboratory, field, and industrial environments.
Each CRM solution is traceable to the International System of Units (SI) via NIST (National Institute of Standards and Technology) and conforms to the International Organization of Legal Metrology (OIML) Recommendation No. 56, providing assurance of traceability, accuracy, and uncertainty estimation.
Certification & Quality Assurance
- Produced by Hach Lange GmbH, an accredited reference material producer (DAkkS)
- Certified under DIN EN ISO 17034:2017, which extends beyond ISO 17025 by including material production and stability
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Each CRM includes a downloadable Certificate of Analysis (CoA) and Certificate of Conformity, verifying:
- Exact measured conductivity value
- Uncertainty (typically k=2 coverage factor)
- Traceability chain
- Expiration and storage conditions
Packaging & Shelf Life
- Packaged in airtight, light-protective bottles and enclosed in sealed aluminum pouches
- Guaranteed shelf life of 2 years (unopened) from the date of certification
- Once opened, solutions remain valid for up to 3 months, provided they are stored at 10–25 °C and protected from light
Product Range Overview
| CRM Product | Conductivity Value (25 °C) | Composition | Volume | Uncertainty (±) | Formula | Notes |
|---|---|---|---|---|---|---|
| 12.85 mS/cm CRM | 12.85 mS/cm | KCl 0.1D | 500 mL | ±0.5% (k=2) | KCl | OIML-compliant |
| 25 µS/cm CRM | 25.0 µS/cm | NaCl | 250 mL | ±5.0% | NaCl | Low-conductivity CRM |
| 1015 µS/cm CRM | 1015 µS/cm | NaCl | 500 mL | ±0.5% | NaCl | Mid-range CRM |
| 1408 µS/cm CRM | 1408 µS/cm | KCl 0.01D | 500 mL | ±0.5% | KCl | OIML-compliant |
| 111.3 mS/cm CRM | 111.3 mS/cm | KCl 1D | 500 mL | ±0.5% (k=2) | KCl | High-conductivity CRM |
Applications
These CRMs are designed for use in:
- Calibration and verification of conductivity probes and meters
- Routine QA/QC protocols in water quality testing
- Validation of analytical equipment performance in laboratories
- Environmental monitoring, including surface and groundwater
- Process control in municipal water, industrial wastewater, and desalination/membrane systems
- Traceability documentation for regulatory compliance (e.g., ISO 17025, GMP, GLP, EPA standards)
Compatible Sectors
- Environmental testing laboratories
- Water utilities and treatment plants
- Power generation and steam cycle monitoring
- Boiler and cooling system management
- Aquaculture and pool maintenance
- Pharmaceutical and food & beverage manufacturing
Advantages of Using Hach CRM Conductivity Standards
- Accredited production ensures regulatory compliance and global recognition
- Reliable measurement uncertainty with full documentation
- Long shelf life and stable composition
- Compatible with Hach meters and most other commercially available conductivity instruments
- Prevents calibration drift and ensures high confidence in analytical results
The Hach Certified Reference Material (CRM) Conductivity Standards deliver exceptional reliability, traceability, and accuracy in conductivity calibration. As DIN EN ISO 17034-accredited materials, they are ideal for laboratories and industrial users who demand the highest level of quality assurance in their conductivity measurements. Available across a wide range of values, they support every calibration need from ultrapure water to highly conductive process systems.
- Concentration: 12.85 mS/cm ±0.5% (k=2) at 25°C, 500 mL 25.0 µS/cm ±5.0 % at 25°C, 250 mL 111.3 mS/cm ±0.5% (k=2) at 25°C, 500 mL 1015 µS/cm ±0.5 % at 25°C, 500 mL 1408 µS/cm ±0.5 % at 25°C, 500 mL