I have the Taylor K-2006 kit.
For measuring FC, the instructions say to put "2 dippers" of the DPD powder in.
Sorry to be a stickler about this, but what does that mean? The dipper stick is flat, so I can go in and scoop it, but how big of a scoop? A flat scoop? A heap? As full a heap as fits on the dipper stick?
The only reason I ask is because I'm assuming I'd probably get vastly different chlorine measurements whether I scoop generously or scoop conservatively. I can easily justify "1 dipper" as being +/- 50% of another dipper, depending on your definition of dipper.
So how much DPD powder are you REALLY supposed to put in?