Thermo Fisher
28mm Caps for Sterilin™ UC/30 Disposable Glass Containers
SKU · R328
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Clinical specimen collection covers the pre-analytical steps that determine whether downstream PCR, culture, or antigen tests can deliver reliable results. On this page, you’ll find sterile swabs, viral/universal transport media, stool and urine containers, and compliant biohazard packaging. As a distributor, Iright supplies a broad Thermo Fisher portfolio and supports quoting, substitutions, and lead-time checks.
Pre-analytical quality hinges on getting the right tools for specimen type and test method, then maintaining integrity in transit. In practice, that means pairing swabs with compatible media, choosing the correct primary container, and shipping under the correct packaging standard with documentation that survives the journey. The sections below help you narrow choices quickly and confidently.
Included product families (overview):
Sterile flocked/polyester/foam swabs for NP/OP, wound, surface, or buccal sampling.
Transport media: viral (M4RT/M5), universal (M6/UTM) in tubes or ready-made kits.
Containers for urine and stool (Clicktainer™, Bio-Tite™, Cary-Blair vials).
Biohazard bags and absorbent pads for UN3373 triple-packaged shipping.
Start with the specimen, then match a medium or container that preserves analytes without inhibiting the intended assay. The quick matrix below groups common specimen types with recommended kits or containers. For detailed specs, see the comparison tables that follow and the Featured SKUs section for fast ordering.
Specimen → Recommended options (principle-level guide):
Nasopharyngeal/oropharyngeal swabs → Flocked swab + VTM (M4RT/M5) or UTM/M6 kits for PCR and antigen workflows.
Saliva → Saliva collection device or sterile container; route by downstream qPCR or antigen; confirm media compatibility.
Sputum → Leak-tight sputum/Clicktainer containers; consider viscosity and lab intake needs.
Urine → Sterile specimen containers (Bio-Tite™, midstream kits) sized for urinalysis or multi-analyte workflows.
Stool → Cary-Blair vials (with indicator) for enteric pathogens; room-temperature transport per IFU.
Downstream method determines which transport media are suitable. Viral media and universal media aren’t interchangeable for every use case; some formulations support PCR stabilization while others prioritize organism viability for culture. Use the table to align media with the analytical endpoint and typical hold conditions.
Workflow alignment (principle-level):
| Downstream Test | Recommended Transport Medium | Not Recommended* | Typical Hold Range** |
|---|---|---|---|
| RT-PCR/qPCR (viral targets) | Viral transport medium (e.g., M4RT/M5) | Media or materials known to introduce PCR inhibitors | 2–8 °C short-term; follow IFU for max time |
| Viral culture | Viral transport medium with cryoprotectant (M4RT) | Saline alone for extended holds | 2–8 °C; rapid transit preferred |
| Bacterial culture (enteric) | Cary-Blair fecal transport | Plain containers without preservatives for long transit | Room temp per IFU |
| Antigen/LFA | Kit-validated swab/media sets or M6/UTM | Unvalidated media for the target antigen | 2–8 °C per kit insert |
Different categories solve different stability and handling problems. The brief cards below highlight what actually changes between options—swab head material, media chemistry, closure engineering, and packaging compliance—so you can short-list the right products before comparing exact SKUs.
Sterile Swabs — Flocked tips (nylon) release more sample; choose minitip for NP and regular for OP/wound. Avoid cotton for PCR-based workflows.
Transport Media — Viral (M4RT/M5) vs universal (M6/UTM) with 1–3 mL fill; available as tubes or kits pre-mated with swabs.
Urine/General Containers — Click-seal and Bio-Tite™ formats enable leak-tight transport and easy labeling; select 90–120 mL capacities.
Stool Transport — Cary-Blair vials with indicator and sporked caps simplify collection and preserve enteric bacteria during transit.
Biohazard Packaging — Dual-pocket or document-pouch bags with optional absorbent pads support UN3373 triple-pack workflows.
The tables below surface the practical differences most buyers and lab managers compare: swab tip and shaft geometry, and media type, volume, and format. Use them to align with SOPs, then jump to Featured SKUs for exact catalog numbers.
A. Swab & Kit Characteristics (representative attributes)
| Attribute | Option Examples | Typical Use Notes |
|---|---|---|
| Tip material | Flocked nylon; polyester; foam | Flocked tips boost release; some kits pair minitip for NP sampling. |
| Shaft | Plastic/aluminum; breakpoint | Breakpoints ease transfer into media tubes. |
| Bundling | Tube-only vs tube+swab kits | UTM/M6 kits pair 1–3 mL media with appropriate swabs. |
B. Transport Media at a Glance
| Medium | Fill Volume | Format | Compatibility (Typical) |
|---|---|---|---|
| M4RT (VTM) | 3 mL | Tube-only | Viral PCR and culture; cryoprotectant supports viability. |
| M5 (VTM) | 3 mL | Tube-only | Viral collection and transport. |
| M6/UTM (Universal) | 1.5–3 mL | Tube-only or swab+medium kits | Broad compatibility incl. PCR/antigen workflows; check kit IFU. |
Correct storage and shipping prevent pre-analytical failures. Most transport media specify 2–8 °C short-term holds and defined maximum intervals; stool transport like Cary-Blair may remain at room temperature per IFU. For off-site testing, use triple packaging (primary leak-proof receptacle, secondary sealed packaging with absorbent, rigid outer packaging) and include paperwork in a separate pouch.
Key reminders (always follow product IFU and local SOPs):
Observe temperature and time limits stated for each medium/kit.
Use absorbent pads and document pouches inside biohazard transport bags.
Verify media/test compatibility when substituting SKUs; some antigen kits require specific swabs/media.
Popular, representative items from Thermo Fisher. Catalog numbers and descriptors below match Thermo Fisher pages and documents; please validate availability for your region before ordering.
| Catalog No. | Product Name (Official) | Key Specs | Intended Use / Notes |
|---|---|---|---|
| R12530 | MicroTest™ M6 (1.5 mL) Tube (72/pk) | Universal transport medium; 1.5 mL fill | General specimen transport; kit-pairing available. |
| R12533 | MicroTest™ M6 (3 mL) Tube (72/pk) | Universal transport medium; 3 mL fill | Broad workflows; check downstream test IFUs. |
| R12561 | M6 (1.5 mL) MicroTip Flocked Swab Kit (100/pk) | Tube + micro-tip flocked swab | NP/minitip sampling + transport. |
| R12569 | M6 (3 mL) MicroTip Flocked Swab Kit (100/pk) | Tube + micro-tip flocked swab | Kit format for streamlined collection. |
| R12505 | MicroTest™ M4RT 3 mL Tube (72/pk) | Viral transport medium | Viral PCR/culture; cryoprotectant formulation. |
| R12515 | MicroTest™ M5 (3 mL) (72/pk) | Viral transport medium | Viral collection and transport. |
| 305C | Sterilin™ UTM Swab Kit, 3 mL + NP flocked swab | Irradiated; 50/case (availability varies) | UTM collection kit for NP sampling. |
| R21610 | Cary-Blair with Indicator Single Vial (12/pk) | Fecal transport; green closure | Enteric pathogen culture; room-temp transport per IFU. |
| 90GRN53-1000 | Samco™ Clicktainer™ 90 mL (pre-assembled) | Multi-click seal; leak-tight | General specimen/urine collection; labeled (tabbed). |
| 010038 | Samco™ Bio-Tite™ 120 mL Wide-Mouth | Sterile; tabbed label; pre-assembled | Easy collection; helps prevent spills. |
| 0180005 | Biohazard Specimen Transport Bag 9×6 in with 3×5 in absorbent pad | Dual-pocket/document features by option | Part of UN3373 triple-packaging workflow. |
1. Choosing between VTM and UTM
Use viral media (M4RT/M5) when maintaining viral integrity is critical; consider UTM/M6 for broader compatibility, always aligning with your test kit IFU.
2. Which swab tip is best for PCR?
Flocked nylon swabs generally maximize sample release and are widely recommended for NP/OP PCR workflows; avoid cotton for PCR because of potential inhibitors.
3. Can stool be shipped at room temperature?
Cary-Blair formulations support room-temperature transport per IFU; confirm timing and target organism requirements with your lab policy.
4. What does UN3373 require in practice?
Use a leak-proof primary receptacle, a sealed secondary package with absorbent material, and a rigid outer package. Dual-pocket biohazard bags help separate paperwork from the specimen.
Whether you need M4RT/M5 for viral studies, UTM/M6 kits for multiplex testing, Cary-Blair vials for enteric work, or Clicktainer™/Bio-Tite™ containers for routine urinalysis, Iright can assemble a validated list that matches your SOP, instruments, and local regulations. Share your target test, specimen types, and volumes—we’ll confirm media compatibility, documentation (IFU/SDS) links, and current lead times.
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