You would get a lot more input if you would post questions like this in the support forum. Most of those who post here in the debate forum do not use Miracle-Mineral-Supplement , and are opposed to its use, so they have little or no experience with it.
Having said that, I can tell you that there is no problem using a glass bottle for Miracle-Mineral-Supplement , but you would want to make sure that the cap is plastic - many glass bottles have a metal lid and you need to avoid those.
The plastic bottles that are used for Miracle-Mineral-Supplement are PET and do not contain BISP-A. However, they do contain other chemicals - usually the danger from leaching come when the plastic is either heated (ie in the dishwasher or if hot liquid is put into them), or when the contents are a potent leaching force, as with distilled water.