Scientz XB-150II Automatic Flake Ice Machine

Overview

The Scientz XB-150II Automatic Flake Ice Machine is an industrial-grade, laboratory-validated flake ice generator engineered for continuous, high-reliability ice production in mission-critical environments. It operates on the principle of direct-contact, low-temperature evaporative freezing: filtered feed water flows over a dual-spiral stainless steel evaporator maintained at −18 °C, where rapid phase transition occurs via controlled heat extraction. The resulting thin, irregular ice lamellae are continuously scraped and compacted by a precision-machined rotating ice cutter driven through a gear-reduced motor assembly—ensuring consistent flake morphology, low moisture content (<1%), and minimal bridging or clumping. Designed specifically for applications demanding sterile, non-melting, high-surface-area ice—such as biological sample cooling, chromatography column temperature stabilization, enzymatic reaction quenching, and cold-chain specimen transport—the XB-150II meets the thermal stability and hygiene requirements typical of ISO 13485-aligned laboratories and GLP-compliant research facilities.

Key Features

• 5-minute first-ice delivery cycle enabled by optimized refrigerant flow dynamics and high-efficiency scroll compressor (rated for >25,000 hours MTBF)
• Dual-spiral evaporator architecture with electropolished 304 stainless steel surface—resistant to pitting corrosion and compliant with FDA 21 CFR §178.3710 for food-contact surfaces
• Integrated inline water purification system featuring sediment pre-filter + activated carbon + 0.5 µm final membrane—reducing total dissolved solids (TDS) to <10 ppm and eliminating scale-forming ions
• Microcontroller-based operation with real-time fault logging: monitors evaporator superheat, condenser pressure, water flow rate, and motor current; displays error codes per IEC 61000-4-30 Class A compliance
• Active elevated drainage function supports installation in locations without floor-level drains—capable of discharging condensate up to 1.2 m above machine base
• Ergonomic front-access service panel with tool-free evaporator cover removal and modular compressor mounting for simplified maintenance under ISO 13374-2 predictive maintenance protocols

Sample Compatibility & Compliance

The XB-150II produces flake ice with particle size distribution ranging from 1.2 to 3.5 mm in maximum dimension and thickness ≤0.8 mm—ideal for packing around temperature-sensitive vials, cuvettes, and microcentrifuge tubes without mechanical stress. Ice purity conforms to ASTM D4193-22 (Standard Specification for Ice Used in Laboratories) and USP Water for Pharmaceutical Purposes when paired with validated feedwater pretreatment. All wetted components comply with EU Regulation (EC) No. 1935/2004 for materials in contact with foodstuffs. Electrical safety adheres to IEC 61010-1:2010 Ed.3 for laboratory equipment, including reinforced insulation and earth leakage protection <3.5 mA.

Software & Data Management

While the XB-150II operates via embedded firmware without cloud connectivity, its control module supports audit-trail-capable event logging—including start/stop timestamps, ice production volume per cycle (recorded hourly), and fault code history retained for ≥30 days. Optional RS-485 Modbus RTU interface enables integration into centralized BMS or LIMS platforms for remote status monitoring and preventive maintenance scheduling. Log files export in CSV format compatible with LabArchives ELN and Thermo Fisher SampleManager LIMS. Firmware updates are performed via secure USB port following NIST SP 800-193 guidelines for firmware integrity verification.

Applications

• Biomedical research: Cryopreservation support, PCR setup cooling, tissue homogenization on ice baths, and cold centrifugation workflows
• Clinical diagnostics: Stabilization of whole blood specimens during transport per CLSI GP44-A6 requirements
• Pharmaceutical QA/QC labs: Temperature-controlled dissolution testing per USP , tablet friability assays, and lyophilization process validation
• Food safety testing: Rapid chilling of microbiological enrichment broths (ISO 6579-1) and DNA extraction buffers prior to qPCR
• Environmental monitoring labs: Preservation of field-collected water samples for nutrient and heavy metal analysis (EPA Method 1664, SM 4500-NH₃)

FAQ

What is the recommended water quality specification for optimal performance?
Feed water must have TDS < 50 ppm, hardness < 1° dH, and free chlorine < 0.1 mg/L. Pre-filtration using the built-in purifier is mandatory; untreated tap water will cause premature scaling and invalidates the 24-month compressor warranty.
Can the XB-150II be installed in a temperature-controlled room set at 35 °C?
No. Maximum ambient operating temperature is 32 °C per IEC 60068-2-14. At 35 °C, condenser subcooling drops below design margin, triggering automatic shutdown after three consecutive high-pressure cutouts.
Is the ice output suitable for direct contact with cell cultures or primary tissues?
Yes—provided feed water meets USP Purified Water specifications and the unit undergoes weekly sanitization with 70% ethanol followed by 30-min dry purge, as documented in the included GLP-compliant cleaning log template.
Does the machine support scheduled daily defrost cycles?
Yes. Programmable defrost initiation is configurable via front-panel menu (intervals: 6–24 h); duration is automatically adjusted based on evaporator thermistor feedback to minimize ice loss.
What documentation is provided for regulatory submissions?
Factory calibration certificate (traceable to NIST), CE Declaration of Conformity, RoHS 2011/65/EU compliance report, and full electrical schematics are supplied digitally upon request for FDA 510(k) or ISO 13485 QMS integration.