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Bluelab 2.77 EC Conductivity Standard
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 readingsA professional-grade EC reference solution that ensures your Bluelab meter stays accurate and dependable after every clean.
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Bluelab 2.77 EC Conductivity Standard
Key Highlights
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Key Highlights
- Provides a 2.77 EC (mS/cm) reference for verifying probe accuracy
- Recommended for use after cleaning conductivity or TDS probes
- Compatible with all Bluelab EC/CF/PPM meters and pens
- Ready-to-use formula, no mixing required
- Manufactured and certified to international laboratory standards (NIST)
- Sealed bottle for long shelf life and contamination protection
Directions for Use
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Directions for Use
- Clean your conductivity or TDS probe following Bluelab’s cleaning instructions.
- Pour a small amount of 2.77 EC solution into a clean container.
- Submerge the probe in the solution and wait for the reading to stabilise.
- The reading should match 2.77 EC (± tolerance). If not, clean again and retest.
- Discard used solution after testing and reseal bottle tightly.
- Store in a cool, dark place away from direct sunlight or contamination.
Technical Specifications
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Technical Specifications
- Solution Type: Conductivity Standard Solution (2.77 EC / 2.77 mS/cm)
- Conductivity Reference: 2.77 EC @ 25 °C
- Traceability: NIST-certified reference standard
- Intended Use: Verification of Bluelab EC/CF/TDS meters
- Packaging: 250 mL sealed bottle
- Storage Temperature: 5 – 30 °C
- Shelf Life: 12 months (unopened)
- Compatibility: Bluelab Truncheon, OnePen™, Combo Meter, and all EC/TDS testers
Resources
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Resources
Shipping & Returns
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Shipping & Returns
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.
To start a return, you can contact us at info@hydrooasis.com.au
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.
You can always contact us for any return question at info@hydrooasis.com.au.
Size: 250ml