VERISPEC
Frequently asked questions
Common questions about VERISPEC from 3G Electric.
What concentrations are available in the VERISPEC conductivity standards line?
VERISPEC conductivity standards are offered at several concentrations, including 50 µS/cm, 250 µS/cm, 447 µS/cm, 1,413 µS/cm, and 50,000 µS/cm. Each is supplied as a liquid in a 500 mL plastic bottle. The 447 µS/cm and 1,413 µS/cm standards are potassium chloride solutions (CAS 7447-40-7), while others may use different reference electrolytes with CAS 7732-18-5. These concentrations cover a broad range of conductivity measurements, from low-conductivity pure water to high-conductivity industrial processes. The appropriate standard should be selected based on the expected conductivity range of the samples being measured and the calibration requirements of the instrument.
What is the CAS number for VERISPEC conductivity standards?
The CAS number varies depending on the specific standard. For the 447 µS/cm and 1,413 µS/cm standards, the CAS number is 7447-40-7, which corresponds to potassium chloride. For the 50 µS/cm, 250 µS/cm, and 50,000 µS/cm standards, the CAS number is 7732-18-5, indicating water as the primary component. The CAS number provides a unique identifier for the chemical substance, aiding in safety and regulatory compliance. Users should refer to the product label and safety data sheet for complete composition and handling information.
Can VERISPEC conductivity standards be used to calibrate any conductivity meter?
VERISPEC conductivity standards are designed for calibrating conductivity meters and sensors that operate within the corresponding measurement range. The standard's concentration should match the expected sample conductivity for optimal accuracy. For example, a 1,413 µS/cm standard is suitable for meters measuring in the mid-range, while a 50,000 µS/cm standard is for high-conductivity applications. Users should consult their meter's manual for calibration procedures and compatibility. The standards are aqueous solutions and are compatible with most conductivity sensors, but specific electrode materials and cell constants should be considered. Always follow the manufacturer's calibration instructions.
What is the shelf life and storage requirement for VERISPEC conductivity standards?
Shelf life and storage conditions for VERISPEC conductivity standards are not specified in the product listings. Typically, aqueous conductivity standards should be stored in a cool, dry place, away from direct sunlight, and kept tightly sealed to prevent evaporation or contamination. Users should refer to the manufacturer's documentation or the product label for specific shelf life information. Once opened, standards may have a limited period of use; it is good practice to record the opening date and discard if any signs of contamination or evaporation occur. For critical applications, consider using fresh standards and verifying against a second standard.
Are VERISPEC conductivity standards traceable to NIST or other standards?
The product listings do not indicate traceability to NIST or other reference standards. Traceability information, if available, would typically be provided on the certificate of analysis or product label. For applications requiring traceable standards, such as ISO 17025 accredited laboratories, users should request documentation from the manufacturer or supplier. 3G Electric can assist in obtaining available technical data, but does not guarantee traceability unless explicitly stated. It is recommended to verify the suitability of the standard for the intended quality system before use.
What is the volume and packaging of VERISPEC conductivity standards?
VERISPEC conductivity standards are supplied in 500 mL plastic bottles. The bottle size is consistent across the range of concentrations. The plastic bottle is designed for laboratory use, with a cap to prevent leakage and contamination. The volume is sufficient for multiple calibration sessions, depending on the amount used per calibration. The packaging includes labeling with the concentration, CAS number, and other relevant information. For bulk requirements, multiple bottles can be ordered. 3G Electric ships these products globally, with appropriate packaging for safe transport.
