Bluelab EC 2.77 / CF27.7 / 1800 PPM Conductivity Calibration Solution | 250ml & 500ml

🔬 Know Your EC Probe Is Clean — Before You Trust Your Readings

Your EC probe doesn't need calibrating — but it does need to be clean. The Bluelab EC 2.77 / CF27.7 / 1800 PPM Conductivity Calibration Solution is the reference solution used to confirm your Bluelab EC or CF probe is clean and reading correctly. If the numbers don't match, your probe needs a clean. Simple as that.

📦 Available Sizes

• 250ml — Great for home growers and regular probe checks
• 500ml — Ideal for commercial setups or frequent testing routines

✅ Why Every Grower Needs This

• 🎯 Verify probe cleanliness instantly — if your reading matches CF27.7 / EC2.77 / 1800 PPM, your probe is clean and ready
• 🏭 Factory-calibrated EC/CF equipment — Bluelab EC meters don't need recalibrating, just regular cleaning checks
• 🔬 Referenced to high laboratory standards — made specifically for Bluelab products for reliable, consistent results
• 💧 Works across all Bluelab EC & CF products — one solution for your whole Bluelab setup
• 🌿 A must-have in every grower's toolbox — alongside pH buffer and KCl storage solutions

🔧 How to Use

Decant a small amount of solution into a clean cup. Dip your EC or CF probe and check the reading. If it reads CF27.7 / EC2.77 / 1800 PPM, your probe is clean and good to go. If not, clean your probe and test again. Discard the used solution — never pour it back into the bottle.

💡 Tips to Keep Your Solution Accurate

• Always decant into a small vessel before use — never dip directly into the bottle
• Discard used solution after each check — contamination affects accuracy
• Store in a cool, dark place with the lid tightly sealed
• Keep out of reach of children

📐 Size Comparison

🌿 Clean probe, accurate readings, thriving grow. Add the Bluelab EC Conductivity Solution to your cart and take the guesswork out of your EC checks.