PH, Alk, Borax and Acid oh-my

[waterbear]

The ajusted alkalinity is ignored by most people and I haven't really seen it discussed in the forum. My feelings is that it is only something to worry about if your CYA levels are high enough (over about 60 ppm) that they will have a signigificant impact on the ALK reading. The actual correction is pH dependant but the simplifed correction I previoulsly posted is close enough. I just noticed I had a typo in it when I meant to put 1/4 I typed 1.4. I will correct the other post.

Taylor Technoligies sees merit in the ajusted alkalinity and to me it makes sense since the amount of cynaurates in the water will test as alkallinity but are not a part of the carbonate/bicarbonate buffer system that we are trying to measure with the TA test. When the level of CYA is in the recommeded range of 30-50 ppm the amount of error is small and can be ignored. It is at high CYA levels that it changes the ALK reading significantly.