Handheld Blood Bag Tube Sealer
Portable automatic high-frequency heat sealer for PVC blood collection bag tubes. Seals 800–1000 tubes per charge, no preheating required. Suitable for hospital transfusion departments, blood banks, and blood collection centers.
Louise Corscadden, PhD
Director of Science · ConductScience
Ask Louise about Handheld Blood Bag Tube Sealer fit, setup, configuration, or quote prep.
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The handheld automatic blood bag tube sealer uses a transistor high-frequency generator with filtering-shielding design to weld PVC tubing without hemolysis. High-frequency electromagnetic field causes polar molecules in the plastic to vibrate and generate uniform heat, producing flat, consistent seals that are easy to separate at the pre-set groove. The device operates both with and without external power, making it fully portable for use on blood collection vehicles and in field settings.
No preheating or manual timing is required — the sealing process is fully automatic. The anti-splash protector keeps the sealing head clean, and the wrapped heat-sealing head design prevents hemolysis through flat seals. Wide-voltage compatibility allows global use.
| Parameter | Specification |
|---|---|
| RF Output Frequency | 40.68 MHz ± 10 kHz |
| RF Consumption | 30 W |
| Battery | 24 V, 4000 mAh (3-hour charge time) |
| Sealings per Charge | 800–1000 |
| Sealing Time | 1–2.5 s (automatic) |
| Suitable Tube Diameter | 2–7 mm outer diameter, ≤1.5 mm wall thickness (PE or PVC) |
| Power Input | AC 100–240 V, 50/60 Hz, 0.7 A |
| Working Consumption | 150 W |
| Standby Consumption | 3 W |
| Dimensions (W×D×H) | 145×205×55 mm |
| Net Weight | 2 kg |
| Gross Weight | 4 kg |
| Components | Heat sealing handle + control box |
Standard accessories: canvas portable bag, 2-meter connecting cable, charger.
How It Works
The sealing mechanism operates through radio frequency heating at 40.68 MHz ±10 KHz, generating localized thermal energy in the tubing material. When the sealing jaws contact the tube, RF energy creates molecular friction within the PE or PVC polymer, rapidly raising the temperature to the material's melting point. The automatic pressure application during the 1-2.5 second cycle creates a hermetic seal as the heated material fuses and cools.
The 30W RF power output provides consistent heating across the specified tube diameter range (2-7mm) while the automatic timing control ensures reproducible seal quality. The system monitors sealing parameters to prevent overheating that could compromise tube integrity or create incomplete seals that might fail during handling or transport.
Features & Benefits
Power Supply
- AC 100–240 V, 50/60 Hz
Battery
- 24 V, 4000 mAh
Sealing Time
- 1–2.5 s (automatic)
Brand
- ConductScience
RF Output Frequency
- 40.68 MHz ± 10 kHz
Sealings per Charge
- 800–1000
Suitable Tube Diameter
- 2–7 mm OD, ≤1.5 mm wall (PE/PVC)
Weight
- 4.41 kg
Dimensions
- L: 8.07 mm
- W: 5.71 mm
- H: 0.28 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Power Source | 24V 4000mAH rechargeable battery with 800-1000 sealing cycles per charge | Many units require continuous AC power connection | Enables field use and mobile laboratory operations without external power requirements |
| Sealing Speed | 1-2.5 second automatic sealing cycle | Manual units often require longer dwell times | Reduces processing time and increases throughput for high-volume applications |
| RF Frequency | 40.68 MHz ±10 KHz with 30W power output | Entry-level models may use lower frequencies | Provides consistent heating across specified tube diameter range with reliable seal formation |
| Tube Compatibility | 2-7mm outer diameter, ≤1.5mm wall thickness for PE/PVC materials | Some units limited to narrower diameter ranges | Accommodates standard laboratory and clinical tube sizes for versatile sample handling |
| Automation Level | Automatic timing and pressure control | Manual units require operator timing and pressure application | Eliminates operator variability and ensures consistent seal quality across users |
| Portability | 2kg system weight with canvas carrying bag and 2-meter cable | Benchtop units typically heavier with fixed positioning | Supports point-of-use applications and transport between work sites |
This handheld sealer combines RF heating technology with battery-powered portability for sterile tube closure applications. The automatic sealing control and wide tube compatibility range make it suitable for diverse laboratory and clinical sample handling workflows requiring reliable containment.
Practical Tips
Allow sealed tubes to cool for 5-10 seconds before handling to ensure complete seal formation and prevent accidental opening.
Why: The thermoplastic material requires cooling time to achieve maximum bond strength and seal integrity.
Clean sealing jaws with isopropyl alcohol between different sample types to prevent cross-contamination.
Why: Residual material on jaws can compromise seal quality and introduce contaminants to subsequent samples.
Perform test seals on sample tubing before starting a batch to verify proper heating and seal formation.
Why: Confirms system is operating within specified parameters and prevents sample loss due to inadequate seals.
Inspect each seal visually for complete fusion across the tube diameter before sample transport or storage.
Why: Incomplete seals may fail during handling, leading to sample contamination or loss of sterility.
Allow the RF generator to cool between intensive sealing sessions to prevent overheating and maintain consistent performance.
Why: Excessive heat buildup can affect sealing quality and potentially damage the internal circuitry.
If seals appear weak or incomplete, verify tube material compatibility and check battery charge level before adjusting sealing parameters.
Why: Material incompatibility or low battery power are common causes of poor seal formation.
Position tubes perpendicular to sealing jaws and ensure complete contact across the tube diameter for uniform heating.
Why: Proper alignment ensures even heat distribution and prevents partial seals that may fail under pressure.
Recharge the battery after every 500 sealing cycles or at the end of each work day to maintain optimal performance.
Why: Regular charging prevents deep discharge conditions that can reduce battery life and sealing power output.
Setup Guide
What’s in the Box
- Heat sealing handle with RF generator
- Control box with battery pack
- 2-meter connecting cable
- AC charger (100-240V input)
- Canvas portable carrying bag
- User manual and operation guide (typical)
- Warranty documentation (typical)
Warranty
ConductScience provides a one-year manufacturer warranty covering defects in materials and workmanship, with technical support available for troubleshooting and operational guidance.
Compliance
What tubing materials and dimensions are compatible with this sealer?
The unit seals PE or PVC tubing with outer diameter of 2-7mm and wall thickness ≤1.5mm. Material compatibility is limited to these thermoplastic polymers due to RF heating characteristics.
How many seals can be performed on a single battery charge?
The 24V 4000mAH battery provides 800-1000 heat sealing cycles per charge, depending on tube material and sealing conditions. Full recharge requires 3 hours.
What is the typical seal time and can it be adjusted?
Automatic sealing time ranges from 1-2.5 seconds depending on tube material and thickness. The system uses automatic timing control for consistent results.
Is the seal quality reproducible across different operators?
Yes, the automatic sealing mechanism eliminates operator variability in timing and pressure application, ensuring consistent seal formation regardless of user technique.
What power supply options are available for extended use?
The unit operates on internal 24V battery for portability, with AC100-240V charger (50/60Hz) for recharging. Working power consumption is 150W during sealing operations.
How portable is the system for field applications?
The complete system weighs 2kg with 145×205×55mm dimensions, includes 2-meter connecting cable for flexible positioning, and comes with canvas carrying bag for transport.
What maintenance is required for consistent performance?
Regular cleaning of sealing jaws and periodic battery conditioning are recommended. Consult product datasheet for specific maintenance intervals and procedures.
Can this unit seal tubes containing liquid samples?
The sealer is designed for tube closure applications, but liquid presence may affect seal quality. Test with specific sample types to verify sealing performance and integrity.
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