Laboratory equipment: how to choose laboratory ultra pure water machine

Laboratory equipment: how to choose laboratory ultra pure water machine 1 First of all, we need to know the water quality, that is, what is the resistance value or conductivity of water quality as we often say, and the derivative relationship between them is greater than 0.2m Ω Cm @ 25 ℃ or greater than 10m Ω Cm @ 25 ℃ or greater than 18m Ω Cm @ 25 ℃, It can also refer to the national laboratory water standard (refer to Appendix 1) If these are uncertain, they can be determined according to the instruments and equipment of their own experiments, such as: general physical and chemical experiments, blood serum analysis, general tests, cleaning of experimental utensils, etc., use of more than 0.2m Ω Cm @ 25 ℃, if college students experiment, qualitative and quantitative analysis, environmental monitoring, For food inspection and drug inspection, it is allowed to use more than 10m Ω Cm @ 25 ℃ If there are instruments such as HPLC, PCR, TOC analysis, amino acid analysis, atomic absorption, preparation of high-purity solution, it is necessary to use more than 18m Ω Cm @ 25 ℃ ultra pure water 2 For water demand, first of all, we need to know how much water we can use in a day, whether it is continuous water or intermittent water For ultra pure water instrument, the general water yield is how many liters per hour, including a water tank, the general water storage capacity is about 20l-100l, and the water intake flow rate is generally about 1.5l/min-1.8l/min, According to their daily total water consumption to choose ultra pure water machine water production.