A broad selection of sensION+ probes are available to meet almost all laboratory and field applications. Measureable parameters include pH, dissolved oxygen, conductivity, ORP, ammonia, ammonium, chloride, fluoride, nitrate and sodium. All pH electrodes are delivered with storage tubes; all field probes are equipped with screwable calibration tubes, serving excellent usability in the field and minimizing buffer consumption. Several multi probes are offered for sensION+ portable multi meters, saving time and money by simultaneous measurement of up to three parameters combined with convenient handling.