The Bluelab 2.77 EC Conductivity Standard is a precision reference solution designed to verify the accuracy of your Bluelab conductivity and TDS meters. It ensures your instruments deliver reliable readings after cleaning or maintenance, helping you maintain optimal nutrient balance and system performance.
Formulated and referenced to international (NIST) laboratory standards, this high-quality calibration solution provides a stable and accurate EC value of 2.77 mS/cm. Suitable for all Bluelab conductivity meters and pens, it plays a critical role in confirming probe integrity, cleaning effectiveness, and long-term measurement accuracy. Every batch is quality-checked to guarantee consistency and professional-grade reliability.
Precision Verified
Confirms meter accuracy against a trusted 2.77 EC reference standard
Laboratory Grade
Manufactured to NIST-traceable standards for consistency and reliability
Easy to Use
Simply dip your cleaned probe to verify correct readings
A professional-grade EC reference solution that ensures your Bluelab meter stays accurate and dependable after every clean.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
Sold out
Key Highlights
Directions for Use
Technical Specifications
Resources
