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  1. Amazon.com: Laboratory tube 3pcs flat mouth test tube 35

  2. Thomas 949369 Anodized Aluminum Standard Test Tube Single …

  3. Size | Tubix Test Tube | Test Tubes with Cork or Cap | 10ml Glass Test

  4. 352235 | Falcon® 5 mL 聚苯乙烯圆底管,带细胞筛网按扣盖,25/ …

  5. Round bottom test tube, U-bottom test tube - MedicalExpo

  6. Test Tube Rack, (35mm dia x 10 slots) - BioEquipment Scientific

  7. Test Tubes - McMaster-Carr

  8. Disposable Test Tubes | Fisher Scientific

  9. Test Tubes | Fisher Scientific

  10. VWR® Test Tubes with Sturdy Lip, Borosilicate Glass