Chloramine test kits

[aquaman_68]

Randy, What kind of tests kits did you use for the BRS chloramine test that you conducted last year? I know they were hach, I was just wondering what the item number was on them. It seems they no longer carry chloramine test kits in a color wheel. They just carry a meter that tests for monochloramine that cost over 340.00. Did you guys use something to test for free ammonia & chlorine, rather than the monochloramine?

[simonh]

Hach CN-70 is the colour wheel kit free or total chlorine (0-0.7 or 0-3ppm). Product #14542-00.

[Randy Holmes-Farley]

Thanks, Simon. :)

Here's the article that resulted from it, including this discussion of testing:

http://reefkeeping.com/issues/2003-11/rhf/feature/index.htm

"Measuring Chloramine

There are many kits suitable for measuring chloramine, with varying limits of detection. Many are not suitable for testing the low levels necessary for reef aquaria. The kit that I prefer for measuring low levels of chloramine is the Hach CN-70 (part # 1454200). It is capable of measuring total chlorine and free chlorine. Chloramine is found by the difference between these two values. It has a low range scale that runs from 0 to 0.7 ppm, and a high range that runs from 0 to 3.5 ppm. The low range can detect 0.01 ppm chloramine. It costs about $64 (with shipping) and is good for many tests. The colorimetric kit is very easy to use: reagent is mixed with the water to be tested and compared to a color wheel.
"

I do not know if the CN-70 is currently available or not, but you don't need a super expensive kit since in most cases we need not distinguish monochloramine from other chloramines or even from chlorine/hypochlorite.

[aquaman_68]

They told me it was going to cost about 70.00 with shipping. 14.00 for shipping

[Randy Holmes-Farley]

OK, I'm glad it is still available. :)