Sorry I didn’t see this thread sooner - Yes, I do work for Medela, however, I don’t know off the top of my head how to answer your question. I have forwarded your question to my friend in customer service. I’ll email you what they reply. 
Sorry I didn’t see this thread sooner - Yes, I do work for Medela, however, I don’t know off the top of my head how to answer your question. I have forwarded your question to my friend in customer service. I’ll email you what they reply.