- Thread starter Sandib210
- Start date

Use it the same as you would testing for chlorine but multiply your result by 2.25. For example, using the 10 ml sample size, [s:35t236q9]instead of multiply your result by 10, you would multiply by 22.5[/s:35t236q9] if you got a result for FC of 10 ppm, then bromine would be 22.5 ppm. An example: (20 drops/2)*2.25= 22.5 ppm Free Bromine.

jewing said:

3. Using the small spoon shaped end of the dipper, add one heaping dipper, or two level dippers, of R-0870 and swirl to mix. If the sample turns pink for a moment and then turns clear again, **or if it turns brown**, add another dipper of R-0870. If the sample remains clear the entire time, your FC level is probably zero, however it is best to verify that with an OTO chlorine test, since the FAS-DPD test is prone to the occasional false zero.