I finally figured out why my headbands kept warping after I switched to a new PVA glue last month.

The pH was way too acidic, which I confirmed with test strips after my third ruined text block, so has anyone else had this happen with a specific brand?

2 comments

2 Comments

cameron37115d ago

My pH tests showed the opposite actually.

chen.jade15d ago

Weird, my results were totally different. I had the same problem last month, @cameron371. I started testing my water first thing in the morning and got way more consistent numbers. The afternoon tests were all over the place for me.

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