Is your conductivity instrument adequately cleaned and giving accurate results? 

Most of Bluelab’s EC/ppm equipment does not need calibrating as they are all factory calibrated here at Bluelab (except Bluelab EC and ppm Pens). 

To ensure solutions remain accurate:

• Avoid cross-contamination
• Decanter into a smaller plastic cup
• Discard sample after use
• Store in a cool dark place
• Store with lid secured tightly
• Keep out of reach of children

 
Bluelab solutions are manufactured specifically for Bluelab products are NIST certified and are made to a traceable standard to ensure your Bluelab products last longer and maintain accuracy.