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Exact leadquick光度计操作手册-英文 Collect water sample in 50mL conical tube to the 50mL line. Add five (5) drops of ACID-1 Reagent, Part No. 486999. Mix and allow to sit for at least five (5) minutes. After this time, TEST SAMPLE is ready for testing. 官网链接:http://www.open17.com/con-meter/343-leadquick
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