United Scientific 13mm Polypropylene Test Tube Racks – Wet/Dry Use, 90-Tube Capacity, Autoclavable, 6-Pack

The United Scientific 13mm Polypropylene Test Tube Racks offer a highly functional and cost-effective solution for organizing, storing, and processing test tubes in any lab setting. Each rack holds up to 90 test tubes (13mm diameter), arranged in 6 rows of 15 holes, providing ample space for routine sample handling, incubation, or preparation.

Engineered from a durable, specialty polypropylene (PP) blend, these racks are ideal for both wet and dry environments. Unlike conventional plastic racks, they’re specifically designed to sink in water baths and remain stable even in agitated conditions, making them perfect for temperature-sensitive applications or heated incubations.

Each unit features a top-tier alpha-numeric grid for fast tube identification and sample referencing—ideal for clinical, research, or classroom use. The racks are autoclavable for high-temperature sterilization and can be easily stacked when empty, saving space during storage.

Sold in a pack of 6, these white test tube racks are a staple for any lab requiring reliable, low-maintenance organization. (Other colors available by special order.)