help with Hanna phosphate checker

[Reef Pilot]

Geez guys, it is really not that hard... I only use one vial, and always get it completely mixed every time. Like I said, just have to do it right as described above, and it is then very accurate and consistent.

[lastlight]

Originally Posted by Reef Pilot

Geez guys, it is really not that hard... I only use one vial, and always get it completely mixed every time. Like I said, just have to do it right as described above, and it is then very accurate and consistent.

my readings sometimes vary so it's good conversation to me. if there's ways to make the process more accurate it's worth discussing.

[straightrazorguy]

Originally Posted by Reef Pilot

Geez guys, it is really not that hard... I only use one vial, and always get it completely mixed every time. Like I said, just have to do it right as described above, and it is then very accurate and consistent.

Maybe I'm slow, but I cannot fill vial, add ALL the reagent in the pouch, and completely mix it in 3 min. At the end of 3 min I still have solid particles of reagent swirling in the vial. I don't want to measure it unless it's completely dissolved. That's why I use 2 vials.

[Reef Pilot]

Originally Posted by straightrazorguy

Maybe I'm slow, but I cannot fill vial, add ALL the reagent in the pouch, and completely mix it in 3 min. At the end of 3 min I still have solid particles of reagent swirling in the vial. I don't want to measure it unless it's completely dissolved. That's why I use 2 vials.

What do you mean fill the vial?? That is done at the beginning before C1. I also have the packet cut, funnel formed and ready to pour before the 3 min time limit begins. I usually use close to the full 3 min before pressing (and holding) C2, but have no trouble completely dissolving the powder.