If the kits seem to catch on for arsenic tests, Hach may develop cheap test kits to measure fluorine levels as well.
要是砷的测试组受到欢迎的话，哈趣公司也许就会继续研发便宜的测试组来侦测氟。
2
The daily quick determination of COD in wastewater can be achieved using HACH 45600 COD detector with self-made reagents instead of the special reagents of HACH.