1.DCD100 Meter2.DCON201T Plastic ATC Cond probe3.Standard Cond solution: 50mL: 84μS/1413μS/12.88mS/cm, one for each;4.DDO01-2M DO probe, cable length: 2m5.DDOS-01 Membrane refill solution: 30mL,1pc6.DDOSC Sensor caps: 3pcs/group, 1pkg7.DF01 Flexible probe Holder: 1pc8.DF01 Flexible probe Holder: 1pc