Thank you for viewing! *· Comments are welcome, and immediate purchase is OK (W’) ♥PTFE Boiling Stones 1089103 450g♥ (NO.1145) ※Manufacturer's price: 9,300 yen PTFE boiling stones (PTFE chips) are boiling stones that gently and efficiently boil while forming a large number of small bubbles. They are not affected by boiling acids, hydrocarbons, ketones, esters, alcohols, alkalis, etc., regardless of concentration. These are ultra-pure virgin PTFE chips. ※Please also take a look at other items such as cameras that I have for sale. #astroshop ↑Click here. Thank you very much for viewing. #chemistry #experiment #analysis