SciMed
Blood Roller Mixer — 4-Tube Continuous Mixing, 30/36 RPM Adjustable, Cold-Room + Incubator Rated
Blood Roller Mixer — 4-Tube Continuous Mixing, 30/36 RPM Adjustable, Cold-Room + Incubator Rated
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4-roller blood tube mixer for gentle continuous mixing of blood samples, blood bank + hematology lab reagents, and cell suspensions. Smooth 30/36 RPM rotation prevents hemolysis while ensuring even sample homogenization. Stable low-noise motor for long service life. Can operate in a 4°C cold room OR in incubators up to 60°C / 80% RH — perfect for blood bank + reagent warming workflows. Standard 15-20 min mixing cycle. 230V AC, 50Hz. $199 direct.
Specifications
| Rollers | 4 × 230mm length (accommodates multiple blood tubes per roller) |
|---|---|
| Rotation speed | 30 / 36 RPM (adjustable — slower for gentle blood mixing, faster for thicker suspensions) |
| Motor | Stable low-noise, long service life |
| Environmental rating | Cold room 4°C OR incubator up to 60°C / 80% RH — dual-mode workflow |
| Mixing time | Typical 15-20 min for blood sample homogenization |
| Power | 230V AC, 50Hz |
| Method | Continuous roller inversion — safer + more even than shaker/vortex for blood |
| Warranty | 1-year parts + labor |
Applications
- Blood bank — reagent RBC + antibody screening cell suspension mixing (Type & Screen workflow)
- Hematology lab — CBC tube mixing prior to analyzer aspiration (prevents cell settling)
- Coagulation lab — PT/PTT/INR tube mixing prior to analyzer
- Blood chemistry — serum + plasma tube mixing to prevent gradient
- Cell culture — cell suspension mixing prior to counting (hemocytometer or automated)
- Serology + immunology — reagent mixing prior to assay setup
- Blood transfusion services — donor blood unit mixing during processing
- Research hematology — animal model blood sample prep
Best for
- Hospital + reference clinical labs
- Blood banks + transfusion services
- Hematology + coagulation labs
- Cell culture facilities
- Research labs + biotech
- University teaching labs
- International lab procurement via DDP
Buying for a hospital lab or blood bank?
- Volume pricing on 3+ orders
- Net-30 invoicing for verified accounts
- SAM.gov / VA compliant
- Compatible with standard blood collection tubes (Vacutainer, BD, Greiner, generic)
- International DDP shipping — hematology + blood bank markets globally
FAQ
How does this compare to Stuart SRT9 / Grant Instruments PTR-35?
Feature parity — 4-roller continuous mixing, adjustable RPM, cold-room + incubator rated. Stuart + Grant have slightly quieter motors + longer warranty. Price differential: $199 vs $600-$1,200 premium OEMs. For general lab + blood bank use, SciMed delivers full function at 20-30% of OEM pricing.
Why roller vs vortex for blood?
Vortex creates high-shear forces that hemolyze RBCs. Roller mixer creates gentle continuous inversion (like manual tube inversion 10-20 times) that homogenizes without shear damage. Essential for blood bank + coagulation + hematology sample integrity.
Can I use in a walk-in cold room?
Yes — rated for 4°C operation. Ideal for blood bank workflow where reagent RBC suspensions must be kept cold during mixing.
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