<a href=showthread.php?s=&postid=15678394#post15678394 target=_blank>Originally posted</a> by Lightsluvr
I have an ELOS and two Salifert ALK kits. In addition, I borrowed a friend's API kit... I got three widely different readings. But that is the subject of another thread.
So to answer your question, I am looking for someting I can trust...
LL
Out of all of them I would use LaMotte. The color indicator is a tablet vs a dropper (less room for error). When titrating there is no air gap as some test, which also can cause error.
Two thing that they could improve on is the color change can be hard to see at first, but once you get use to the test it's not bad. The other is you need to do a calculation to get it into dKh from ppm.