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B-D/Helix Test Autoclaves

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Autoclaves designated as suitable for the Bowie-Dick (B-D) and Helix tests are specifically engineered to possess a highly efficient air removal and steam penetration system, a critical requirement for Class B sterilizers. The B-D test verifies the effectiveness of air removal in the chamber and the adequate penetration of steam into a porous load, while the Helix test assesses the sterilizer's ability to penetrate the lumens (internal channels) of complex hollow instruments. These units feature high-powered vacuum pumps and precise cycle controls to ensure the test indicators consistently pass, confirming the machine meets the rigorous EN 13060 standards. The control software is often pre-programmed with a specific B-D test cycle that runs a 3.5-minute exposure at 134°C after a deep vacuum. Reliable performance on these tests is non-negotiable for dental and surgical facilities, as it directly proves the safety and efficacy of the sterilization process. These models are built with verifiable accuracy, ensuring all cycle parameters are measurable and auditable for regulatory bodies.

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Specification

ParameterDetail
Test CompatibilityBowie-Dick (B-D) and Helix Test Ready
Sterilizer ClassificationClass B (Fractional Pre-Vacuum)
Required Test Cycle134°C, 3.5 minutes (Pre-programmed)
Vacuum SystemHigh-Efficiency Multi-Pulse Vacuum Pump
Steam QualityValidated for Saturated Steam Production
Chamber AccuracyTemperature uniformity within ±1°C
DocumentationData Logging of Test Cycle Parameters
CertificationMeets EN 13060 requirements for testing

Application

The daily use of B-D and Helix test cycles is mandatory in all high-standard medical facilities, particularly dental and surgical clinics where hollow instruments (Type A) and porous loads (like textiles) are routinely sterilized. This includes oral surgery centers, ambulatory surgical centers, and hospital central sterile services departments (CSSD). The B-D test is performed at the start of each operating day or after major repair to ensure the autoclave is functioning correctly before processing patient instruments. The Helix test is used to validate the performance for instruments with long, narrow lumens, which are common in minimally invasive surgery and specialized dental procedures. Consistent passing of these tests provides crucial legal and quality assurance documentation, confirming that the facility's infection control protocols are effective. Failure to pass these tests means the sterilizer must be immediately taken out of service, underscoring the critical nature of this feature for continuous clinical operation and patient safety compliance.

Transaction Details

Procurement of test-compatible autoclaves involves standard B2B terms, with a 30% T/T deposit and the balance due against shipping documents. Due to the requirement for calibration verification, many buyers request a factory witness test (FAT) report prior to shipment. CIF terms are common for shipping to international distributors. The equipment is packaged in reinforced, anti-shock crating to protect the delicate vacuum pump system during long-distance transit. Comprehensive technical documentation, including the test cycle validation certificate, is provided with the shipment. Customers should ensure they procure the correct, certified B-D or Helix test devices locally for daily use. Warranty coverage focuses on the performance of the vacuum system and pressure vessel. Lead times are typical for Class B equipment (3-6 weeks). Air freight is available for urgent replacements, though sea freight is standard for cost reasons.

FAQ

  • Q: What specific load types require the Helix test?
  • A: The Helix test is specifically required for instruments with very narrow and long lumens, classified as hollow load Type A, such as certain dental handpieces, endoscopes, and cannulated surgical instruments.
  • Q: If the B-D test fails, can I still run normal cycles?
  • A: No. A failed B-D test indicates a critical issue (like an air leak or inadequate steam quality), meaning the autoclave cannot guarantee sterility. The unit must be immediately taken out of service and serviced before further use.
  • Q: Does performing these tests wear out the autoclave faster?
  • A: The tests utilize specific, short cycles. While all cycles contribute to wear, the B-D and Helix tests are designed as part of the normal daily operation protocol and do not unduly increase equipment degradation if proper maintenance is followed.
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86-15728040705
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86-15728040705
86-18957491906