How can you not understand this before using the laboratory water purifier!

       Pure water is a common reagent in experiments because it is a better solvent, and the correct selection of equipment for making pure water can help researchers avoid many unnecessary troubles. Laboratory water purifier is a device for making pure water for laboratory inspection and quarantine. The laboratory water purifier is applicable to the laboratories of testing centers, scientific research institutes, colleges, universities, hospitals and enterprises, and provides the required water for analysis and testing, reagents, experiments and analytical instruments. The laboratory water purifier should be regarded as the second generation for the experimental pure water, and the first generation is the distilled water purifier.

Laboratory water can be divided into:

For class I water, the resistance shall be greater than 10m & omega Cm (conductivity lower than 0.1us/cm), mainly used for analytical tests with strict requirements, including tests with requirements for particles.

For secondary water, the resistance shall be greater than 10m & omega; (conductivity lower than 0.1us/cm), mainly used for inorganic trace analysis and other tests.

Grade III water is used for general chemical analysis test. Tertiary water can be prepared by distillation or ion exchange.

Ultra pure water:

The standard is that the hydraulic resistivity is 18.2m & omega- cm。 The new process of producing ultrapure water often adopts reverse osmosis plus ion exchange mixed bed or reverse osmosis plus electrodeionization (EDI), which is more economical and environmental friendly than the former.

In inorganic and analytical chemistry experiments, according to different tasks and requirements, the purity requirements of water are also different. Pure water is divided into "pure water" and "ultra pure water". In the process of purchasing pure water machine, people often confuse these two concepts, resulting in difficulty in model selection and unreasonable increase of material supply cost. Pay attention to the following points when purchasing laboratory pure water machine:

1. When purchasing the water machine, according to the nature of your enterprise and the purpose of the experiment, so as to choose the model for you according to your previous sales experience;

2. The reference index of model selection should follow the principle of "high, not low";

3. The water volume is generally calculated as 8 hours per day. If the water output of this model is 15L / hour, its water output per day should be 120L.

The above is the relevant information of the pure water produced by the laboratory water purifier. Users need to have a certain understanding of this before using it to better prepare it.