CAULYS Silver Chloride Silver Reference Electrode, Ag/Agcl Reference Electrode, 1 Pcs Silver Silver Chloride Electrode (Diameter 4mmX50mm Length)

??Please note that if this reference electrode contains liquid KCL medium, we do not support expedited transportation during transportation(Liquid is prohibited by many expedited transportation supplier). In another words, if the customer chooses expedited transportation, the package we send will not contain KCL liquid, and the KCL medium needs to be prepared by the customer. If it is a normal level of distribution service, there will be KCL liquid in the electrode tube. Thanks for your understanding.