New Hanna phosphate checker

[Delphinus]

I used to have one of the older, more expensive models. I have a couple questions about how it would compare:

1) How easy is it to get the reagent packets open and the reagent added to the glass vial?

2) I realize this would be a pain to find out because of the 3 minute countdown per test thing, but if you take several tests in a row (of different samples), how similar are the readings from test to test?

[trilinearmipmap]

Originally Posted by Delphinus

1) How easy is it to get the reagent packets open and the reagent added to the glass vial?

Very simple. Cut open the top of the packet with scissors. Spread the top open, make a V-shaped bend in the side of the top of the packet, pour the reagent powder down the "V" into the glass vial.

Originally Posted by Delphinus

2) I realize this would be a pain to find out because of the 3 minute countdown per test thing, but if you take several tests in a row (of different samples), how similar are the readings from test to test?

I want to do this but I am swamped with work, travel etc. It is on my list of things to do. I'd also like to make a known standard from potassium phosphate and RO water to test the meter against.

[Delphinus]

Originally Posted by trilinearmipmap

Very simple. Cut open the top of the packet with scissors. Spread the top open, make a V-shaped bend in the side of the top of the packet, pour the reagent powder down the "V" into the glass vial.

Sounds the same then, although hopefully the vial is different with this one. With the one I had the opening was very small and it was tough to get all the powder into the vial without spilling at least some.

I want to do this but I am swamped with work, travel etc. It is on my list of things to do. I'd also like to make a known standard from potassium phosphate and RO water to test the meter against.

That would be very interesting. If you do get around to it I would like to see the results.