Blood Bag Tube Sealer
High-frequency blood bag tube sealer line covering table-top, semi-auto, fully automatic, and handheld configurations. Suitable for blood banks, hospital transfusion departments, blood collection centers, and component departments.
Louise Corscadden, PhD
Director of Science · ConductScience
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The blood bag tube sealer range uses high-frequency electromagnetic technology to weld PVC and PE tubing cleanly without hemolysis. Each model produces firm, flat seals with an easy-tear groove for manual separation. Anti-splash protection and stainless-steel or aluminum alloy construction ensure reliable daily use in clinical and laboratory environments.
Available Models
| Model | Sealing Type | Tube Diameter | Sealing Time | Power Supply | Net Weight |
|---|---|---|---|---|---|
| Table-Top | Mechanical trigger | φ2–6.2 mm (wall ≤1 mm) | 0.5–2 s | AC 90–264 V, 50/60 Hz | 5 kg |
| Semi-Auto Desktop | Automatic | ∅2–6 mm (wall ≤1.5 mm) | 2–4 s | AC 110–260 V, 0.7 A | 7 kg |
| Fully Auto — Aluminum | Automatic, MCU-controlled | 4 mm OD, wall ≤1 mm | 0.1–9.9 s | AC 220 V, 50 Hz | 8 kg |
| Fully Auto — Stainless Steel | Automatic, MCU-controlled | 4 mm OD, wall ≤1 mm | 0.1–9.9 s | AC 220 V, 50 Hz | 7 kg |
How It Works
The Blood Bag Tube Sealer operates through controlled thermal fusion of thermoplastic tubing materials. When activated, the instrument applies precise heat at the sealing point, causing the plastic tube walls to soften and fuse together under controlled pressure. The automatic voltage regulation ensures consistent temperature delivery regardless of line voltage fluctuations, while the programmable timer (0.1-9.9 seconds) allows optimization of sealing parameters for different tube materials and wall thicknesses.
The sealing mechanism creates a hermetic bond by raising the plastic temperature above its glass transition point, enabling molecular chain movement and interdiffusion across the tube walls. Upon cooling, the fused material forms a permanent seal that maintains sample integrity and prevents contamination. The aluminum alloy construction provides thermal stability and even heat distribution during the sealing process.
Features & Benefits
Model
- Table-Top
- Semi-Auto Desktop
- Fully Auto — Aluminum
- Fully Auto — Stainless Steel
Sealing Technology
- High-frequency electromagnetic welding
Tube Materials
- PVC, PE
Brand
- ConductScience
Weight
- 8.0 kg
Dimensions
- L: 16.0 mm
- W: 30.0 mm
- H: 20.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Sealing Time Control | Programmable 0.1-9.9 seconds with digital precision | Basic models often provide fixed timing or crude adjustment | Enables optimization for different tube materials and ensures consistent results across applications. |
| Voltage Regulation | Automatic voltage regulation maintains consistent performance | Entry-level units may lack voltage compensation | Provides reliable sealing quality despite laboratory power fluctuations. |
| Construction Material | Aluminum alloy housing for thermal stability | Basic models often use plastic housings | Ensures even heat distribution and long-term durability in laboratory environments. |
| Tube Compatibility | Designed for 4mm diameter tubes with ≤1mm wall thickness | Some units have limited size compatibility | Specifically optimized for standard blood collection and sample storage tubing. |
This sealer provides precise timing control and automatic voltage regulation in a compact, thermally stable design. The aluminum construction and programmable features offer laboratory-grade reliability for consistent sample sealing applications.
| Model | SKU | Listed price | Status | Dimensions |
|---|---|---|---|---|
| Fully Auto — Stainless Steel | BIO-0822 | $2,499.00 | Available | 30.0 x 18.0 x 15.0 cm |
| Fully Auto — Aluminum | BIO-0822 | $2,199.00 | Available | 30.0 x 20.0 x 16.0 cm |
| Semi-Auto Desktop | BIO-0822 | $1,299.00 | Available | 32.0 x 18.0 x 13.0 cm |
| Table-Top | BIO-0822 | $999.00 | Available | 30.5 x 16.5 x 15.5 cm |
Practical Tips
Establish sealing time parameters using test tubes before processing actual samples.
Why: Different tube materials may require different heating times for optimal seal formation.
Clean sealing surfaces regularly with laboratory-grade disinfectants to prevent contamination buildup.
Why: Residue accumulation can affect heat transfer and seal quality.
Allow sealed tubes to cool completely before handling or transport.
Why: Hot plastic remains soft and seals may be compromised if disturbed during cooling.
If seals appear incomplete, increase sealing time incrementally rather than applying additional manual pressure.
Why: The automated mechanism provides optimal pressure - extending time allows better thermal fusion.
Verify seal integrity by visual inspection and gentle tension testing before sample storage.
Why: Proper seals should show clear fusion zones without air bubbles or incomplete bonding.
Ensure adequate ventilation around the unit during operation to disperse any minor plastic vapors.
Why: Heat sealing thermoplastics may produce minimal emissions during the fusion process.
Setup Guide
What’s in the Box
- Blood Bag Tube Sealer main unit
- Power cord (typical)
- User manual and technical documentation (typical)
- Sealing time calibration guide (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship, with technical support for calibration and operational guidance.
Compliance
What tube materials are compatible with this sealing method?
The unit is designed for thermoplastic tubes with 4mm outer diameter and ≤1mm wall thickness. Optimal results depend on the specific plastic formulation's thermal properties - consult product datasheet for material compatibility.
How do I determine the appropriate sealing time for my tubes?
Start with shorter times (0.1-0.5 seconds) and increase incrementally while testing seal integrity. Proper sealing creates a clear fusion zone without tube deformation or burning.
Can the unit handle different wall thicknesses within the ≤1mm range?
Yes, the programmable timer allows adjustment for different wall thicknesses. Thicker walls typically require longer sealing times for complete fusion.
What maintenance is required for consistent performance?
Regular cleaning of the sealing surfaces and periodic verification of sealing time accuracy. The aluminum construction facilitates easy cleaning with standard laboratory disinfectants.
How does the automatic voltage regulation affect performance?
It maintains consistent sealing temperature despite power line fluctuations, ensuring reproducible seal quality across different laboratory electrical conditions.
Is the sealing process reversible or can sealed tubes be reopened?
Heat sealing creates permanent fusion of the plastic material. Sealed tubes cannot be reopened without cutting, making this suitable for final sample preservation rather than temporary closure.
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Accessories
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