Tested and confirmed! This is the 138C solder paste iPad Rehab technicians are currently using. We tried many solder paste alloys and found that Chinese packaging would often contain incorrect alloys compared to the labeling--some in this same green can was actually 183 leaded solder! This is chinese 138C bismuth solder batch tested by iPad Rehab. What you get is what we are actually using.

As seen on iPad Rehab YouTube videos