Nabertherm Heat-Resistant Glove for Muffle Furnaces, Part No. 493000004

Overview

The Nabertherm heat-resistant glove (Part No. 493000004) is an engineered personal protective equipment (PPE) component specifically designed for safe interaction with high-temperature laboratory muffle furnaces and associated thermal processing systems. It is not a standalone instrument but a certified accessory integral to the operational safety protocol of Nabertherm muffle furnaces—including models from the L, R, and HT series—where routine sample loading, crucible handling, or furnace door manipulation occurs at elevated temperatures. The glove operates on the principle of multi-layer thermal insulation: its outer aluminized fiberglass shell reflects radiant heat, while the internal insulating liner absorbs and retards conductive heat transfer. This dual-barrier architecture ensures sustained protection during brief but critical exposure windows—typically ≤30 seconds per handling cycle—under continuous ambient furnace surface temperatures up to 650 °C.

Key Features

• Aluminized fiberglass exterior providing high reflectivity against infrared radiation (emissivity <0.2 at 600 °C)
• Multi-layer composite liner composed of needle-punched ceramic fiber and air-gap microstructure for enhanced thermal resistance
• Ergonomic 350 mm length covering wrist and lower forearm, minimizing skin exposure during crucible transfer
• Reinforced palm and finger tips with abrasion-resistant silicone coating for grip retention on hot ceramic and metal surfaces
• Compliant with EN 407:2020 for protective gloves against thermal risks—certified for contact heat (Level B1), convective heat (Level C1), radiant heat (Level E1), and small splashes of molten metal (Level F1)
• CE-marked in accordance with EU Regulation (EU) 2016/425 on personal protective equipment

Sample Compatibility & Compliance

This glove is validated for use with standard laboratory ceramics (alumina, cordierite), stainless steel crucibles, and quartz ware handled within Nabertherm muffle furnaces operating up to 650 °C. It is not intended for direct immersion in molten metals, prolonged contact (>45 s) with surfaces exceeding 650 °C, or environments involving organic solvent vapors or strong oxidizing agents. All units are supplied with traceable batch documentation and an EU Declaration of Conformity referencing harmonized standards EN 407:2020 and EN ISO 21420:2020 (general requirements for protective gloves). For GLP-compliant laboratories, glove usage logs and replacement intervals (recommended every 6–12 months depending on frequency of use and visual inspection results) support audit readiness under ISO/IEC 17025:2017 clause 6.4.1.

Software & Data Management

As a passive mechanical PPE component, this glove does not incorporate electronic sensors, firmware, or software interfaces. However, its part number (493000004) is fully integrated into Nabertherm’s global spare parts database and inventory management system (SAP S/4HANA), enabling seamless traceability from procurement through lifecycle tracking. Laboratories utilizing LIMS platforms such as LabWare LIMS or Thermo Fisher SampleManager can map this part number to equipment maintenance records, linking glove replacement schedules to furnace calibration and preventive maintenance cycles. No FDA 21 CFR Part 11 compliance is applicable, as no electronic records are generated by the glove itself.

Applications

• Safe removal of sintered ceramic samples from Nabertherm L 9/11 or HT 16/16 muffle furnaces after ashing or calcination protocols
• Handling platinum or nickel-chromium alloy boats during thermogravimetric analysis (TGA) sample preparation
• Manual adjustment of furnace door gaskets or thermocouple ports during routine maintenance at elevated soak temperatures
• Transfer of preheated crucibles in ASTM E178-22-compliant repeatability studies requiring operator intervention between thermal cycles
• Use in university teaching labs where students perform gravimetric analysis per AOAC 990.19, under instructor supervision and documented PPE protocols

FAQ

Is this glove suitable for use with furnaces operating above 650 °C?
No. The glove is rated for maximum continuous contact with surfaces at 650 °C per EN 407:2020 testing protocols. Exposure beyond this threshold significantly reduces insulation integrity and increases burn risk.
Can it be cleaned or sterilized in an autoclave?
No. Autoclaving degrades the aluminized coating and compromises the fiberglass matrix. Wipe only with dry lint-free cloth; avoid solvents, steam, or immersion.
Does Nabertherm provide replacement certification documentation?
Yes. Each shipment includes a copy of the EU Declaration of Conformity and material safety data summary. Batch-specific test reports are available upon request for GMP-regulated environments.
How often should the glove be replaced in a high-throughput QC lab?
Minimum replacement interval is every 6 months under daily use; visual inspection for fraying, discoloration, or stiffness must precede each shift. Any sign of compromised aluminized layer mandates immediate retirement.
Is this glove compatible with Nabertherm’s digital control systems (e.g., THERM 2000)?
It is physically and operationally compatible but has no electronic interface. Its use is governed by procedural SOPs—not automated system integration.