Do you sell Conductivity Standards?

Yes, we sell one Conductivity Standard for each of the Conductivity Sensor's three ranges. Each standard contains 500 mL. Order codes are found below:

Item Vernier Order Code
Low Range Setting 150 uS/cm CON-LST
Medium Range Setting 1413 uS/cm CON-MST
High Range Setting 12880 uS/cm CON-HST

If you are replacing the standard that came with your Conductivity Probe (it was 1000 uS/cm), the best choice would be the one for the Medium Range Setting, 1413 uS/cm, CON-MST.