I've been running this for about 6 weeks in my KH Director. Straight swap from the GHL reagent to this, no changes, no recalibration.
I got that idea that maybe these alkalinity monitors were just an automation of Randy's DIY alk testing. So I ran through the test using the GHL reagent, and sure enough came out with the same (nearly) alk reading. So I went ahead and ordered some .1N acid off Amazon and lo and behold, perfect readings, at HALF the cost.
If you really want to stock up, there are 4L and larger options on Amazon of .1N acids would fit the bill.
I got that idea that maybe these alkalinity monitors were just an automation of Randy's DIY alk testing. So I ran through the test using the GHL reagent, and sure enough came out with the same (nearly) alk reading. So I went ahead and ordered some .1N acid off Amazon and lo and behold, perfect readings, at HALF the cost.
If you really want to stock up, there are 4L and larger options on Amazon of .1N acids would fit the bill.