Oh, I see. I didn't read the instructions as closely as I should have. By the way, I am very impressed with the comprehensive Taylor 2006c Test Kit. I wish I would have bought one years ago. I would have saved a ton of money by not having to rely on the pool store people.

You also answered my next question which was do I rely on the new kit versus the old OTO kit, because the ph results are different, too, between the two kits?