Hanna checkers

[Drfu]

Originally Posted by Magickiwi

I have all three and the phosphate is by far the worst of the them. Results have huge variations when performed back to back; and even when performed side by side with another Hanna checker. Hard to trust the results. The ULR phosphorous checker is a better option even though you have to convert to phosphate and change the units of measure.

The Alk and Cal both work great for me. They are in the same ballpark as results from chemical kits like the RSM series. Cal is a more involved test but once you get it down it's not really a big deal.

I have all three, i was fed up with color kits, to much judgment involved.

I have the ulr phosphorus, its the easiest of the three and i get the same results each time so i highly recommend it. Ask for alk/Ca i dont like the tips they come with to suck up the reagent, it seems to me you get a different size of air bubble each time this making the results a bit different each time. If you don't use the tips you are using more reagent and the results are different.

The Ca does have one extra step involved in it but compared to the API i used before its nothing like drop, shake, count, drop, shake, count.......

Does anyone have any advice on these tips/syringes?

Also i want to check my PH swing, i have never used a ph meter! How are they? Anyone recommend a good one, Hanna or something else?

[rburns24]

That plastic tip that comes with the Alk kit is garbage, period. An insulin syringe is the way to go.

[Drfu]

Originally Posted by rburns24

That plastic tip that comes with the Alk kit is garbage, period. An insulin syringe is the way to go.

So my question is can you use the syringe without the tip and just pull 1ml or does that throw off the results by using too much reagent?

[rburns24]

Discard the tip and the syringe that comes with it and just use an insulin syringe, which you can get at Shopper's Drug Mart. That way, you can measure exactly 1 ml. of reagent. It's very accurate. The other thing you can do is use a 10 ml. syringe with a point on it for your water sample. I can't imagine doing it any other way.