john_s
Member
		If it's something to do with how the concentrate  mixed with the water, I remember when I used to use it I followed the instructions which were to make a stock solution 1+3, then to make working solution that stock would be further diluted. For example, dilution_B was made of stock diluted 1+7.
Maybe this procedure would ensure really thorough mixing?
			
			Maybe this procedure would ensure really thorough mixing?
