The quality of ultra-pure water plays a very important role in experiments. Since the pollution of water resources is particularly serious now, laboratory ultra-pure water machines are supposed to be chosen by most users. In this regard, how should we select the appropriate laboratory ultra-pure water machines when facing various laboratory ultra-pure water machine products on the market? The selection method of the laboratory ultra-pure water machine can refer to the following purchasing principles.
1. According to the quality of raw water
When purchasing an ultra-pure water machine, the customer must provide the manufacturer with the conditions of the raw water, such as heavy sand, high hardness, and groundwater. The process of the ultra-pure water machine is determined by the quality of the raw water, for instance, it is necessary to add a pretreatment device in the presence of much silt, a softening device is added if the hardness is high, and a two-stage reverse osmosis process is adopted in case of high salt content. If you choose an ultra-pure water machine that uses pure water as the water source, you only need to provide water quality requirements and water consumption.
2. According to water consumption
The water production capacity of the ultra-pure water machines on the current market is generally 5-100L/hour. Customers should choose the specifications of the ultra-pure water machines according to the actual water consumption, generally following the four-fold relationship principle, that is, if the water consumption is 20L/day, a machine with the specification of 5L/hour should be preferred; if the specification is too small, the water consumption needs to be reached, the water production time is prolonged, and the consumables of the ultra-pure water machine will be consumed quickly; and on the contrary, if the specification is too large, the purchase cost will increase, which results in waste.
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