But generally speaking, there are many domestic manufacturers of circulating water machines, and their performance is not too bad. I won't give guidance on which one to choose, so as not to be suspected of advertising. I only introduce the matters needing attention when selecting atomic absorption instruments:
1. basic function selection of circulating water machine: it must have circulation and refrigeration functions;
2. Selection of flow parameters of circulating water machine: It varies greatly according to different instrument parameters, some are 2~5L/min, some are 8~ 10L/min. You need to confirm this yourself or contact the instrument manufacturer.
3. Selection of capacity parameters of circulating water machine: generally 9~ 15L circulating water machine is enough, and a smaller one can be selected according to the actual instrument situation;
4. Connector of the circulating water machine: The connector is the most important connection between the circulating water machine and the main engine. You need to specify the specifications of the instrument host waterway connector. When buying a circulating water machine, ask the manufacturer if it can be equipped according to this specification, or let the manufacturer of the circulating water machine be equipped with a connector that can be connected. This is usually the way for manufacturers of circulating water machines to understand, but what you have to do is to give a clear size, thread, specification and connection mode of your instrument waterway joint.
5. There is also the problem of use. Deionized water or distilled water should be used during the use of the circulating water machine to avoid scaling inside the water machine or the instrument, causing pipeline blockage and damaging the water flow sensor (inside the instrument).
Hands only, please accept it if it helps you, thank you ~