What are the consumables of Deloitte's water sampler?

All instruments need normal maintenance to reduce wear and tear, like the sampler relies on a peristaltic pump to extract water samples, the consumables are peristaltic pump tubes, but you do not think that the replacement of the pump tube on the end of the no, no, must be regularly maintained, otherwise the sampling head clogging, refrigerator does not cool, the host of the water will make the life of the instrument will be reduced