The same unlimited-autoclave-cycle stainless steel durability as the 12/13mm Z-rack, sized for 16mm and 17mm OD tubes — the diameter range covering most standard test tubes, culture tubes, and many centrifuge tube formats used across clinical and research labs. Stainless steel construction provides zero-degradation service life through repeated steam sterilization, chemical cleaning, and heavy daily use that progressively compromises polymer racks.
Available in 25-Place (457200, $37.70/EA) and 50-Place (457205, $47.30/EA). The Z-shape inclined geometry holds all positions at a consistent angle, preventing lateral lean and tube-to-tube contact across the full rack capacity.
Features and Benefits
Stainless Steel for Indefinite Autoclave Life: No warping, no discoloration, no dimensional tolerance loss from repeated sterilization. Identical geometry on cycle 1 and cycle 1000.
16mm and 17mm OD Compatibility: Covers 16x100mm and 16x125mm culture tubes, 17mm serology test tubes, most 15mL centrifuge tubes, and all other 16–17mm format tubes from any manufacturer.
25-Place and 50-Place Options: 25-Place (457200, $37.70) for individual workstations; 50-Place (457205, $47.30) for high-volume batch processing.
Z-Shape Inclined Support: Consistent tube angle across all positions prevents contact and lean through handling, incubation, and transport.
No Cycle Limit for GLP/GMP Documentation: Documented as "no cycle limit" — simplifies sterilization records for labs operating under validated sterilization protocols.
Specifications
| Property | 25-Place (457200) | 50-Place (457205) |
|---|---|---|
| Tube Compatibility | 16mm and 17mm OD | 16mm and 17mm OD |
| Capacity | 25-Place | 50-Place |
| Price (EA) | $37.70 | $47.30 |
| Material | Stainless Steel | Stainless Steel |
| Design | Z-Shape inclined positions | Z-Shape inclined positions |
| Autoclavable | Yes — unlimited cycles | Yes — unlimited cycles |
| Country of Origin | China | China |
Laboratory Applications
Microbiology culture labs autoclaving 16mm culture tube racks daily — stainless eliminates the progressive warping that forces PP rack replacement after high cycle counts
Clinical labs using 16/17mm serology and hematology test tubes where routine chemical disinfectant exposure requires chemical-resistant rack material
Research environments requiring GLP-compliant sterilization documentation without polymer rack cycle count caveats
Frequently Asked Questions
Is stainless worth the premium over PP at this price point?
At $37–$47/EA, stainless Z-racks are comparable in price to quality PP racks. In high-autoclave-cycle labs, a stainless rack used for 5–10 years costs less in total than replacing degraded PP racks annually. For labs that rarely autoclave racks, PP or nylon options are sufficient.
What 16/17mm tube formats are compatible?
Standard 16x100mm and 16x125mm glass and plastic culture tubes; 17mm OD serology tubes; most 15mL centrifuge tubes; and any other 16–17mm OD tube from any manufacturer.
Quality Assurance
Globe Scientific products are manufactured under strict ISO 9001:2015 certified quality systems. Designed to meet the demanding requirements of clinical and research laboratories, these products undergo rigorous inspection to ensure consistent performance and reliability.
Academic and Institutional Pricing
LabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.