COD tester
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Currently I am working on a small domestic sewage project, and I want to get a COD tester that is more convenient, cheaper, and does not require high accuracy. Do you have any good recommendations?
according to* * Standard, potassium dichromate method. A chemical experiment device with condenser reflux is sufficient.
There are many kinds of this according to your needs. Whether you use it in the laboratory or online, the price is different. There are many kinds of laboratory use, including fast and ordinary. There are also online ones with or without chemicals. It depends on your needs. How much do you want to invest in it. Please make it clear lz.
If the accuracy requirement is not very high, use the national standard test. If the cheap one has a large error, if you want to buy it, buy the imported one.
Sewage sludge treatment communication* QQ1640246222
Buy a microwave digestion instrument, a rapid measurement method, very fast