Nova Analytics Corporation Electrode Ph Comb N1051a Din Unit EA. ). The N1051A contains a silver-oxide sensor with a protective epoxy body. The sensor should be calibrated no less than every three months and no longer than every three years. A probe with a sensor cavity smaller than the size of the probe body should be used for testing small volumes. It is recommended that samples be taken from back of the probe as it is easier to clean than a probe that is pinned to the side of a comb. A D-cell battery is required for testing. Specifications for Nova Analytics Corporation Electrode Ph Comb N1051a Din 285100510: Catalog number: 97042-076 Type: PH METERS Description: ELECTRODE PH COMB N1051A DIN Supplier Number: 285100510 Package Contents: Nova Analytics Corporation Electrode Ph Comb N1051a Din 285100510 / 97042-076 The Nova Analytics Corporation Electrode Ph Comb N1051a Din 285100510 is a quality addition to the Nova Analytics Corporation lineup. For more great deals on pH Meters by Nova Analytics Corporation please browse our Nova Analytics Corporation pH Meters page. Nova Analytics Corporation Electrode Ph Comb N1051a Din 285100510 Unit EA