​​​​​​​​AST will be closed from COB Wednesday December 24 2025 until January 2 2026. Final sample submissions for the year need to be received by December 23. If you have any urgent testing requirements throughout December please contact​ the laboratory to make arrangements. 

Fin​al testing day for the BOD test will be Friday December 19 2025. 

Biotoxin testing will still occur during the Christmas/New Year period, customers will be notified of testing dates and how to access sample drop-off. 

From everyone at AST we wish you all a very happy and safe Christmas and New Year. See you in 2026!​