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The C1005-SC5-OB is the opaque black light-protective sterile screw-cap variant in the C1005-T5 family, 500 sterile tubes in foam racks at $147 ($0.294 per tube). Opaque black tube material blocks ambient light, designed for light-sensitive samples: fluorescent dyes, photo-sensitive reagents, light-degradable compounds, photo-sensitive cell-imaging samples.
For full chemistry rationale, see the C1005-T5 Clear (C1005 family anchor) page and C1005-SC5-S (sterile clear sister) page.
| SKU | C1005-SC5-OB |
| Type | 5 mL screw-cap tube, sterile, opaque black, in foam racks |
| Pack quantity | 500 tubes in foam racks |
| Per-tube cost | $0.294 (highest in C1005 family) |
| Tube color | Opaque black (light-blocking) |
| Sterility | Sterile |
| Cap configuration | Attached, in foam racks |
| List price | $147 |
Many laboratory samples are light-sensitive:
Standard clear tubes expose contents to ambient light, incidental exposure during workflow handling can degrade samples. Opaque black tubes block light, protecting sample integrity during handling, storage, and transfer steps.
Pick the C1005-SC5-OB when:
Stay with clear sister tubes (C1005-SC5-S, $127) when sterility matters but light-protection doesn't, $20 saving when opaque black isn't required.
| SKU | Color | Sterile | Cap config | List price |
| C1005-T5 Clear | Clear | Non-sterile | None included | $50 (200/pk) |
| C1005-SC5 | Clear | Non-sterile | Separate | $147.00 (500/pk) |
| C1005-SC5-S | Clear | Sterile | Attached, in rack | $127 (500/pk) |
| C1005-SC5-OB (this product) | Opaque black | Sterile | Attached, foam rack | $147 (500/pk) |
Fluorescent dye sample-prep. Protein fluorescent labeling, fluorescent imaging-prep workflows.
Photo-sensitive reagent storage. Pharmaceutical chemistry, photo-degradation kinetic studies.
Cell-imaging sample storage. Fluorophore-loaded cell samples between processing and imaging.
Light-sensitive analytical chemistry. Sample-prep for analytical methods with photo-degradation concerns.
Method-development workflows. Protocol-development comparing photo-protection effects on assay signal.
Confirm sterility certification documentation if required.
Confirm at quote: light-sensitive workflow context, sterility certification, foam rack organization, and lead time.
Warranty: Per Benchmark Scientific standard consumable terms.
C1005 5 mL screw-cap tube family:
- C1005-SC5: Non-sterile clear ($147.00)
- C1005-SC5-S: Sterile clear ($127)
- C1005-SC5-OB (this product): Sterile opaque black ($147), light-sensitive samples
Pick the opaque black sterile tube for light-sensitive sample workflows; sister clear sterile / non-sterile variants cover non-light-sensitive workflows. See C1005-T5 Clear anchor for full C1005 family detail.
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