Ohaus Conductivity Standard Solution

Ohaus Conductivity Standard Solution

Ohaus Conductivity Standard Solutions provide factory-certified calibration standards essential for establishing accurate conductivity electrode cell constants and ensuring reliable conductivity, TDS, salinity, and resistivity measurements across diverse water quality applications. Available in four precisely formulated conductivity strengths—10µS/cm, 84µS/cm, 1413µS/cm, and 12.88mS/cm—supplied in convenient 250ml bottles, these temperature-compensated standards enable proper conductivity electrode calibration spanning ultrapure water to high-ionic-strength industrial process streams.

Cell constants listed at time of manufacture can vary by 10% or more from nominal values and change over time through surface deposits, scratches, fingerprints, or enclosed air bubbles, making calibration with certified standards essential for measurement accuracy—once calibrated, conductivity cells remain stable and do not require the frequent recalibration necessary for pH electrodes.

Calibration should be performed at 25°C or with temperature compensation using the known conductivity value at different temperatures, as the cell constant changes only when the electrode surface condition changes, not from normal temperature variations. These factory-packaged standards support calibration of both 2-electrode cells (glass with platinum or stainless steel) optimized for specific ranges and 4-electrode cells offering wide measurement range with minimal polarization and contamination effects, accommodating measurements from ultrapure water (0.02µS/cm with low cell constant electrodes) to concentrated industrial solutions (200mS/cm with high cell constant electrodes). 

Proper calibration using appropriate conductivity standards maintains measurement accuracy, ensures regulatory compliance, supports quality management systems, and enables reliable water quality assessment in municipal water treatment, pharmaceutical production, food and beverage manufacturing, environmental monitoring, boiler feedwater testing, and laboratory research applications requiring traceable conductivity measurement standards.

Features of Ohaus Conductivity Solutions:

• 1 Year Warranty on all accessories: Factory Certification with Quality Assurance - Each conductivity standard supplied with certified accuracy values and LOT code traceability ensuring regulatory compliance and measurement confidence for quality management systems.
• Four Calibration Range Options - Comprehensive range (10µS/cm, 84µS/cm, 1413µS/cm, 12.88mS/cm) in 250ml bottles brackets complete conductivity measurement spectrum from ultrapure water to high-ionic-strength industrial solutions.
• Temperature Compensation Data - Included temperature compensation information accommodates conductivity value temperature dependence, enabling accurate calibration at 25°C or with correction for varying laboratory conditions.
• Cell Constant Verification - Enables determination of exact electrode cell constant through calibration with certified standards, correcting 10%+ variations from nominal manufacturing values and detecting surface condition changes.
• Wide Electrode Compatibility - Supports calibration of 2-electrode cells (glass, platinum, stainless steel) and 4-electrode cells (stainless steel rings) with cell constants ranging from 0.1cm⁻¹ (ultrapure water) to 1-2cm⁻¹ (general purpose).
• Long-Term Calibration Stability - Conductivity electrodes remain stable after calibration and do not require frequent recalibration like pH electrodes, as cell constants change only with surface condition alterations not normal use.

Applications for Ohaus Conductivity Solutions:

• Conductivity Electrode Calibration - Essential for determining exact cell constants of new electrodes, verifying accuracy after cleaning, and establishing baseline performance for 2-electrode and 4-electrode conductivity cells across measurement ranges.
• Ultrapure Water System Monitoring - 10µS/cm standard calibrates low cell constant electrodes (0.1cm⁻¹) for pharmaceutical water systems, semiconductor manufacturing, boiler feedwater, and laboratory ultrapure water quality verification.
• Drinking Water Quality Control - 84µS/cm and 1413µS/cm standards calibrate general-purpose electrodes for municipal water treatment, distribution system monitoring, and drinking water quality compliance testing.
• Industrial Process Water Monitoring - 1413µS/cm and 12.88mS/cm standards calibrate high cell constant electrodes for process water, cooling tower blowdown, wastewater treatment, and industrial effluent conductivity control applications.
• Quality Management System Compliance - Traceable, certified conductivity standards support ISO/IEC 17025 accreditation, GLP compliance, and quality assurance programs requiring documented electrode calibration with certified reference materials.

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