This product has been discontinued by the manufacturer. Please contact us for the closest replacement - 1.DEC100 Meter2.DCON201T Plastic ATC Cond probe4.Standard Cond solution: 50mL: 84µS/1413µS/12.88mS/cm, one for each5.DF01 Flexible probe Holder: 1pc.6.DA01 Power adaptor