"old" oxine?

hi
about 3/4 weeks ago i purchased 4 small 1.6 oz bottles of oxine ah.for $20 from ebay.
i was very careful about using it and felt that it actually seemed really mild. so i thought it would be good to try it activated in the coop.
now, when i add the activator 1/8 tsp citric acid to the 1/8 cup oxine, nothing happens, twice now.
i opened a new dark glass bottle stored in a cool dark place thinking it would be fresh, so to speak.
nothing. it is not because it was windy that i didnt notice an odor. no yellowish color, no odor-----do you know if odorless is normal?
has anyone here had experience with what the act. oxine should look/smell like?
ty
tammy