Hanna Colorimeter testers good bad????

[Dave VG]

Anyone have these? Good"¦ bad? And how many tests do you get before having to buy more regents?

 

[Srixon]

The one I had worked great and I think it came with either 100 or 200 test reagents before you need to order more.

 

[john1979]

I have the calcium and alk test kits, and I had some trouble at first. The cuvets that come with the tester (2 each) have wildly inaccurate 10 ml marks, leading to incorrect results. After reading several threads here I started using a 10 ml syringe, and have been getting much better results. I double/triple checked everything with some Red Sea test kits and at the LFS, and everything seems fine. I really like using them, as I have trouble seeing the color change in the titration tests.

They also come with 20 or 25 sets of reagents, and refills are something like $12 for another 25.

 

[Dave VG]

Thanks for the input srixon and John. I'm thinking about buying one of each while BRS has 10% off. But before pulling the trigger I thought I'd ask and see what owners in the URS think of them.

 

[pascal32]

I love mine (then again I'm color challenged)!

I've been meaning to post in the chemistry forum on whether the regular PPM phosphate or PPB Phosphorous is abetter choice for our tanks, you gave the nudge

http://reefcentral.com/forums/showthread.php?p=19243865#post19243865

 

[pascal32]

based on the fantastic responses from the above thread it seems shared that the ULR model (#736) is the better choice for reefers, though you do have to take the result and multiply by 3.066 and then divide by 1000.

 

[Dave VG]

Yea that thread is turning out to be a very informative and a very good read. But wouldn't yea know it when I went to order the other night my internet was down. Still looking at them just going to pay a little more I guess.

 

[GMaquarium]

Has anyone compared these with the original Hannah po4 photometer?