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# Vintage New Old Stock (NOS) Spin-Quik Blood Separation Crystals - Lot of 7 Jars**Origin:** Sourced directly from a pristine University Surplus liquidation lot. These jars represent a fascinating era of vintage laboratory testing. ### 📦 What Is Included:
* **Seven (7) Unopened Jars** of Spin-Quik inert polystyrene blood separation crystals.
* **Weight:** 400 grams per jar.
* **Condition:** Excellent vintage NOS condition. Labels are perfectly clean, legible, and vibrant blue. Lids are tightly sealed with no plastic yellowing or degradation.### 🔬 Historical Context:
Manufactured by OTI Specialties (a division of Omni-Tech, Inc. out of Santa Monica, California), these polystyrene crystals were historically added to raw blood sample tubes prior to centrifugation. During a spin cycle, they formed a clean physical barrier separating serum/plasma from cells for clean pipetting. Perfect for display in a vintage science collection, medical history museum, school science classroom, or as unique industrial laboratory shelf decor!*Sold strictly as a vintage historical collectible. Will be securely packed to preserve the glass/plastic jars during transit.*
