Light Labs offers two versions of the 1mL barrier pipette tips, but our B-2005-L is by far our most popular tip. The new 1mL AvantGuard Barrier Pipette Tip actually holds 1.2mL of volume under the barrier. The 1.2mL pipette tips feature a soft fit collar, a fine point, and extended length. The tips are sterile, shrinkwrapped, and Rnase/Dnase/Pyrogen/PCR inhibitor Free.