Yes. For instance, we know an industrial pH probe has a life expectancy of 4.5 years and should be re-calibrated every 6-12 months. We send you sachets of new calibration fluids every 6 months so you will always have up to date fluids on hand to re-calibrate. At 4.5 years or when we realise the probes cannot be re-calibrated, we send you replacements at no-cost, providing you have an active Canobi.ONE membership.