Waters 2707 Operator's Manual page 35

American National Standards Institute (ANSI)-compliant plates are
preferred, but the needle and tray mechanism adjusts to accommodate
non-ANSI-compliant plates.
Caution:
The instrument's needle is of narrow diameter (0.031") and cannot
penetrate firm materials.
Use the following materials as covers:
• For samples in vials – Caps with PTFE or preslit PTFE/silicone
septa
• For samples in low-volume inserts – PTFE/silicone caps or cap mats
• For samples in plates – Polypropylene or PTFE/silicone cap mats;
heat-sealed microtiter plate film
Caution:
adhesive-backed microtiter film.
Do not use hard plastic storage capmats or vial septa.
To avoid contamination from the adhesive, do not use
Using well plates and vial trays 1-25