Ammonia test solution

Ammonia test solution 0.7%(v/v) in H2O，0.9%(v/v) in H2O，2.5%(v/v) in H2O，9%(v/v) in H2O，11%(v/v) in H2O，25%(v/v) in H2O，88%(w/v) in H2O，40%(v/v) in H2O