[Frig man]

 Hi ,,  I am 25 years removed from my high school Chem  lab ,,  I need a little help with setting up a titration of NH4oh  ,,,, I need to have a solution of 32% by weight of NH3 in h20 . ( I bubble in anhydrous ammonia  into a commercially available 29% solution to get to my 32% , I use a chart to compare the s/g  to verify that I have  a 32% solution . I also cool the solution to 15c  and draw off a 100 ml into a volumetric flask  and weigh on a balance for a cross check .)
 I believe the titration would be more accurate than my previous means. If any one has an idea of what acid , the acid concentration, and the best indicator for this application, also walk me through the equation / the math,  so I can arrive at a mole concentration , I believe I can work this  to % by weight . I have access to the lab  glass ware  and any tools I may need ... thanks Frig man

[Borek]

Check Vogel's Quantitative Chemical Analysis, I am almost sure you will find an exact procedure for weak base analysis there.