COV45 replace COY31-Z

COV45 replace COY31-Z,used on COS51D/COS51E/COS41

The picture of old COY31-Z,include membrane caps, o-rings and calibration solution,calibration paper

The picture of new COV45-51TN1 for COS51D and COS51E,also include membrane caps, o-rings and calibration solution,calibration,

The COV45 for COS41 is different,the ordre code is COV45-41TN1.