Alexander1312
Supporting Member
Just to clarify my post: I did not mean to say I am great at water testing, it was more a shout out to the potential ‘quality’ of certain home test kits which are probably not as bad as it is often said, despite their low price. At least those test kits which are referred to as ‘more reliable’ vs others depending on the parameter we are testing. I specifically like the relative accuracy of the Milwaukee for salinity, since I had issues with this in the past (other posts), and knowing that what the ICP use for salinity is rather advanced.I'm nowhere close to many others here in exp or knowledge but I think you have a very tight range with the tests even counting 6 day shipping various temperatures the samples were exposed to along the route. Its probably
safe to say in my estimates the tests your using are accurate enough to notice differences in trends over time. It would be impossible and well beyond my capibilites to speak on the accuracy of the lab preforming the icp. I would hope they would have much better equipment and understanding of chemistry than our lowly hobbist available test kits. How do your personal numbers compare to the last few icps you done. If they look similar in range to these I would say Pat yourself on the back.
To Thomas’ comment: I also did not mean to say that either is correct in their actual value (except maybe salinity). As you know, I was inside the Fauna Marin ICP lab and saw which equipment they use to test, which seems signficantly more expensive, with very expensive testing/calibration solutions etc. So coming close to what they test with very different equipment does speak to the reasonableness of using home test. And this result was almost every single time for each of the five ICPs I have done in the past 6 months.
And to clarify: This only refers to the parameters we can test at home (except potassium, which I am currently not testing), not to the fancy other minor traces etc.