Hanna phosphate test kit questions.

[Meshmez]

doesn't the time out feature of the hanna checkers make this process difficult?

I think it's 5 minutes. If you don't prep your reagent packet beforehand, yes, it gets tight.

 

[Rostato]

I think it's 5 minutes. If you don't prep your reagent packet beforehand, yes, it gets tight.

will it time out when the 3 minute timer is running?

 

[SupraSaltyReefer]

Also when cleaning your cuvette vials use RO water.

 

[Rostato]

Also when cleaning your cuvette vials use RO water.

I've never done this. I don't have any way to pressurize the ro water to ensure a good cleaning. I have not had any issues to my knowledge.

 

[Meshmez]

I think it's 5 minutes. If you don't prep your reagent packet beforehand, yes, it gets tight.

It's actually 3 min according to the directions, which seems ridiculous. But yes, you can still do it if you prep before.

 

[Mike Yasin]

doesn't the time out feature of the hanna checkers make this process difficult?

I use the phosphorous checker- I think my time out is at least 4 mins... maybe 5. The dKH checker is definitely shorter- like 3 mins, I want to say, but that one is a quick test.

 

[Meshmez]

will it time out when the 3 minute timer is running?

No, so you can actually buy time by activating the timer before 3 minutes is up between tests. It just takes away from the "settling" time. My understanding is the 3 minute timer is intended to allow any floaties or bubbles to settle out of the viewing area.

 

[Mike Yasin]

will it time out when the 3 minute timer is running?

I only use the 3 min timer to ensure I get a full two mins of shake when the reagent is added. I usually have the vial back in the unit with 30-40 seconds to spare

 

[Coral reefer]

doesn't the time out feature of the hanna checkers make this process difficult?

This is why I fill the cuvette with 10 ml and empty the packet so it’s ready to dump in right away ahead like ken suggested.
Otherwise, yes, it can be difficult within the time it gives you.

 

[RandyC]

I've never done this. I don't have any way to pressurize the ro water to ensure a good cleaning. I have not had any issues to my knowledge.

wash with tap, rinse with ro a couple of times. When the tap water evaporates, all the funk from the tap is left. Might not be bad if you don’t have high TDS water, but if you have a hard water source, it will be a problem.

 

[Meshmez]

wash with tap, rinse with ro a couple of times. When the tap water evaporates, all the funk from the tap is left. Might not be bad if you don’t have high TDS water, but if you have a hard water source, it will be a problem.

I wash with tap, shake as much out as I can, then roll up a paper towel and shove it in until it fills all corners, rotate and remove. I used to leave the vials floating in ro water, but that gets kinda gross, and probably isn't helping.

 

[Coral reefer]

I wash with tap, shake as much out as I can, then roll up a paper towel and shove it in until it fills all corners, rotate and remove. I used to leave the vials floating in ro water, but that gets kinda gross, and probably isn't helping.

This is what I do too

 

[Rostato]

Holes too small on the Hanna vials To get anything in there.

 

[Meshmez]

Holes too small on the Hanna vials To get anything in there.

sure, with that attitude...

 

[Rostato]

sure, with that attitude...

I refuse to work that hard. Daniel took the lazy reefer handle, but I’m pretty sure I got him beat.

 

[Vhuang168]

I store my Hanna vials full with RO. I always use the same vial and when I could get reference solutions, I test against that to get a baseline when I change reagents.
Every testing method has a +/-, you rarely get exactly the same result, and if you did, it is probably an error. You should get slightly different results, as long as they fall within the +/- range of each other, it's good.