borosilicate pyrex glass test tube
5 Piece 8 Inch Long 12mm OD Pyrex glass blowing tubes 2mm thick wall . Fire polished in both sides open both sides . 5 different colors white , 1 blue , 1 amber , 1 dark green and 1 clear .
We also have others shape and volume, please inquiry us if has your type stock, our email: firstname.lastname@example.org