I know what you mean.I have the hanna checker and on the box it has a web address,HANNA instruments® Worldwide you can go there and most likely find the manual.It seens I cant fine my manual.So I will be doing the same. Here's the place I got my checker from Sunstone Herbals - Natural Remedies for the New Millennium and they have the pH solutions too.I got the packets for a $1.50 each,you need both the 4.01 and 7.01 solution to calibrate with.Oh you are in luck I found some of the manual thers a 1-800-426-6287 for technical support or [email protected] there you go,hope that helps.PEACE