Calibrating your trident to the solution batch will give the best accuracy. Since the batches are so big, you'd only need to calibrate once per batch which is probably better than once per pack from apex. The only caveat is you need to calibrate with a test kit and not a prelabeled solution like you would with apex.
I give my jug bottles a light swirl before pouring but doubtful its needed considering we never shake the bottles in the trident for the 2-3 months it's being used.
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