High Precision Borosilicate Glass Beads (+/- 0.05 mm) Ideal for Various Laboratory Applications.

Highly Spherical with No Irregular shapes or Defects.
Polished Surfaces with No Dirty Spots or Scratches.
500 g (1.1 lb) per package unless specified otherwise. 
Packed in vacuum bags and protected with foam and bubble wraps for transportation.
Pre-treated with high-pressured steam for 30 mins.