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Important Holiday Shipping Schedule Update


ATCC will be closed Wednesday, December 24, 2025 to Thursday, January 1, 2026. Please be advised  you can still submit orders for products during this time, but shipping will resume on Friday, January 2, 2026.


To ensure shipping before the ATCC holiday closing period, please reference the shipping schedule below:


  • Last shipping day for Domestic orders is Friday, December 19, 2025 (Room temperature items shipping only as no frozen item shipments on Fridays. Frozen/ dry ice shipments resumes January 2, 2026).

  • Last shipping day for International orders is Friday, December 12, 2025.

  • Shipping resumes January 2, 2026 for orders submitted after December 19, 2025.

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Preceptrol Cultures

Small bottles of ATCC Preceptrol Cultures.

Preceptrol cultures offer an economical way for your lab to use well-characterized ATCC strains. In this method, material is freeze-dried in a glass serum vial then sealed with a rubber stopper and metal cap. Because these samples are usually distributed in serum vials capped with butyl rubber stoppers rather than the double-vialed ampoules, they are cheaper to produce and allow ATCC to reduce the usual fees. 

With Preceptrol cultures, you can expect the same level of quality control and authentication that is performed for our traditional cultures.

Incorporate these strains in your research, teaching labs, and quality control testing today!

Several petri dishes containing media of various colors.

Introduction to Microbiology

Are you teaching an introductory lab on microbiology? Get started with our easy-to-follow guide! Your students will learn the basics on aseptic technique, culturing techniques, microscopy, bacterial enumeration, differential tests, and more! Download the guide today for detailed information and step-by-step protocols.

Get the Guide

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