Pro Circular Heating Block (HB100)
The Pro Circular Heating Block (HB100) is a specialized aluminum accessory designed for the HB100-Pro dry bath system, engineered to provide precise thermal uniformity for 15 mL and 50 mL conical tubes. Featuring a high-grade, corrosion-resistant aluminum construction, this circular block maximizes thermal conductivity to ensure consistent incubation temperatures essential for enzymatic digestion, serum inactivation, and sample thawing. The tool-free mounting technology allows for rapid interchangeability on the base unit, enhancing workflow efficiency in high-throughput clinical laboratories.
Pro Circular Heating Block (HB100)
PRIMARY CLINICAL & DIAGNOSTIC USES
1. Temperature Uniformity for Core Laboratory Protocols
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Primary Use: Serves as a dedicated accessory unit for the HB100-Pro dry bath, providing a specialized circular heating block designed for simultaneous incubation of multiple tube sizes.
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How it helps: For the clinical laboratory scientist, maintaining a consistent temperature is critical for assay validity. The circular design of this block typically allows for precise temperature transfer, ensuring that 15 mL or 50 mL conical tubes experience uniform heat distribution, which is vital for accurate enzymatic reactions and sample activation.
2. Enzymatic Digestion and Inactivation Protocols
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Primary Use: Utilized for precise incubation in molecular biology applications, specifically for restriction enzyme digestion, ligation, and heat-inactivation of serum complement or enzymes.
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How it helps: For the molecular biologist and medical technologist, the block provides a stable environment (typically up to 100°C) for managing heat-sensitive reactions. The capacity to run multiple tubes at a stable temperature ensures reproducibility, reducing the risk of partial digestion or incomplete inactivation, which can otherwise lead to false-negative results in diagnostic workflows.
3. High-Capacity Sample Processing
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Primary Use: Increases the throughput of the HB100-Pro system by offering defined wells specifically engineered for 15 mL and 50 mL conical tubes.
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How it helps: In a diagnostic setting, time is a critical factor. Utilizing a circular heating block saves valuable benchtop space while allowing the technician to process high volumes of samples simultaneously. For the patient, this efficiency translates directly into reduced turnaround times for critical results, allowing for faster clinical decision-making.
4. Sample Preparation for Hematology and Coagulation
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Primary Use: Used for thawing and pre-warming frozen plasma or serum samples to body temperature prior to coagulation testing (PT/PTT) or other serological assays.
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How it helps: For the phlebotomist or technician, the block provides a controlled thawing environment that prevents the degradation of clotting factors. Proper pre-analytical warming is crucial; if a sample is processed at the wrong temperature, the results can be skewed. For the patient, this ensures that coagulation studies accurately reflect their health status, guiding correct dosing of anticoagulant medications.
SECONDARY & SUPPORTIVE USES
1. Protein Purification and Elution: Used to heat elution buffers or samples during affinity chromatography and protein purification workflows.
2. General Reagent Warming: Pre-warms culture media, buffers, and chemical reagents to reduce equilibration time during downstream experimentation.
3. Lipid and Chemistry Panels: Supports the preparation of samples for lipid profiling and routine chemistry analysis by bringing specimens to uniform temperature.
4. Bacterial Culture Inactivation: Used in biosafety protocols to heat-kill bacterial suspensions before disposal or further analysis.
1. BASIC IDENTIFICATION ATTRIBUTES
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Device Type: A specific accessory module (circular block) designed exclusively for the HB100-Pro heating thermostat to hold and incubate centrifuge tubes.
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Designation: HB100-Pro Circular Heating Block, Conical Tube Block, 15mL/50mL Tube Block, DLAB Heating Block Accessory.
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Key Components:
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Block Body: High-grade aluminum alloy for optimal thermal conductivity.
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T-Wells: Precision-machined cavities designed for standard centrifuge tube diameters (15mL and 50mL).
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Outer Ring: Integrated magnet or mechanical catch for secure, tool-free mounting onto the HB100-Pro unit.
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2. PHYSICAL & OPERATIONAL PROPERTIES
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Construction: Solid aluminum alloy block with chemical-resistant anodized finish.
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Well Count: Configurations typically support 4 to 8 wells depending on the specific 15mL/50mL mix.
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Compatibility: Specifically for 15mL and 50mL conical centrifuge tubes (polypropylene).
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Interchangeability: Features a magnetic or snap-in locking mechanism for rapid, tool-free exchange between different heating blocks on the HB100-Pro base.
3. SAFETY & COMPLIANCE ATTRIBUTES
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Regulatory Status: Laboratory accessory (Component of Class I/II diagnostic equipment).
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Material Safety: Made from 100% aluminum alloy; contains no latex or plasticizers that could melt under high heat.
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Durability: Autoclavable (allow block to cool before sterilization).
4. STORAGE & HANDLING ATTRIBUTES
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Storage: Store in a clean, dry place when not mounted on the base unit; avoid stacking heavy objects on the block.
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Cleaning: Wipe with mild detergent or isopropanol. The block is compatible with autoclaving for sterilization between uses.
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Inspection: Inspect the wells for debris or residue before inserting tubes to ensure proper thermal contact.
1. SAFETY PRECAUTIONS
Temperature Setting: Do not exceed recommended temperatures for specific sample types; excessive heat may denature proteins, degrade analytes, or damage heat-sensitive plastics. While the HB100-Pro can reach up to 100°C, verify sample tolerance before operation .
Block Installation: Ensure heating block is properly seated before operation. The HB100-Pro usually features a magnetic mounting system; confirm full contact for optimal thermal transfer .
Temperature Verification: Allow unit to reach set temperature before loading temperature-sensitive samples. Use the real-time display to monitor stability before starting critical reactions .
Lid Use: Always use lid during operation to maintain temperature stability and prevent contamination or evaporation, especially at higher temperatures near 100°C .
Over-temperature Protection: Unit includes over-temperature protection; however, do not exceed recommended temperature settings for specific sample types. The safety cut-off activates to prevent runaway heating .
Cleaning: Clean spills immediately; disinfect heating block if biological materials are involved; allow block to cool before removal. Blocks are removable for thorough decontamination .
Placement: Place on firm, flat, level, heat-resistant surface; ensure adequate clearance around unit for ventilation. The HB100-Pro is heavier than the HB60-S, requiring a stable benchtop .
Training: Only trained laboratory personnel should operate the HB100-Pro for clinical diagnostic or molecular biology applications .
2. FIRST AID MEASURES
Burn/Scald: If hot heating block contacts skin, cool affected area immediately with cool running water for at least 15 minutes; seek medical attention for severe burns. Use caution when removing blocks as residual heat may persist .
Sample Spillage: If biological sample spills into unit, disconnect power, allow to cool, disinfect area immediately with 70% ethanol or appropriate disinfectant. Avoid electrical components when cleaning .
Electrical Malfunction: If unit shows signs of electrical malfunction, disconnect power immediately; do not attempt to operate; contact service personnel. The Pro series may have more complex electronics requiring professional repair .
Calibration Verification: If test results are inconsistent, perform temperature calibration to verify accuracy before proceeding with diagnostic testing. Regular calibration is recommended for high-temperature accuracy .
3. FIRE FIGHTING MEASURES
Flammability: Plastic housing and electrical components may burn. The heating element can reach high temperatures, posing a fire risk if flammable materials are placed nearby .
Extinguishing Media: Use carbon dioxide or dry chemical extinguisher for electrical fires. Class C or multi-purpose extinguisher is appropriate .
Fire Response: Unplug unit immediately if safe to do so; do not use water on electrical fire. Evacuate area if fire spreads beyond immediate containment .

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