ECS-TR Economic Stainless Steel Vacuum Glovebox with Optional O2/H2O Sensors (~200 ppm) and Pressure Controller, ETRESSVGB
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An economic stainless steel vacuum glovebox designed or specified to maintain an environment around 200 ppm of moisture ($\text{H}_2\text{O}$) and oxygen ($\text{O}_2$) represents a highly cost-effective tier of laboratory hardware. Rather than relying on expensive, fully automated, closed-loop active gas purification columns (which force levels below 1 ppm but cost significantly more), a 200 ppm baseline is achieved via vacuum cycling and inert gas backfilling (also known as a purge-and-refill system).
To hit the 150–200 ppm mark economically, the system leverages the high structural integrity of heavy-gauge stainless steel (typically 3mm or 11-gauge 304 SS) to pull repeated rough vacuums directly on the main chamber or via the vacuum flanges: (1) Mechanical Pump Evacuation: A standard dual-stage rotary vane or dry scroll pump evacuates the chamber down to a rough vacuum (typically between 0.5 Torr and 50 Torr, depending on the specific model's structural reinforcement). This rapidly removes the bulk of ambient atmospheric moisture and oxygen. (2) Inert Gas Backfill: The chamber is backfilled with ultra-high purity (99.999% / 5N) Argon or Nitrogen gas until a slight positive pressure is reached. (3) The Multi-Cycle Effect: Repeating this vacuum-and-fill sequence 2 to 3 times sequentially dilutes the residual air. Because stainless steel has incredibly low outgassing properties compared to acrylic, this method efficiently stabilizes the internal moisture below 180 ppm and oxygen below 200 ppm while saving immense amounts of purge gas.
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| Power |
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| Glovebox Features |
(1) Small Version: L600 x D450 x H420 mm (2) Medium Version: L780 x D650 x H700 mm (3) Large Version: L1120 x D740 x H900 mm
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| Antechamber |
(1) Small Version: Φ210 x L250 mm (2) Medium Version: Φ250 x L290 mm (3) Large Version: Φ370 x L400 mm
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| Pressure Control Unit (Optional) |
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| H2O/O2 Sensor and Display (Optional) |
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| Mobile Stand (Optional) |
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| Vacuum Pump (Optional) | |
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References:
- P. Ayyanusamy, et al., Real-Time Phase Monitoring of Solid-State Electrolytes: A Glovebox-Integrated In Situ Wide-Angle X-Ray Scattering, Energy Technology, 2025 ,13, 2500591.
- D. Martín-Yerga, et al., Scanning Electrochemical Cell Microscopy in a Glovebox: Structure-Activity Correlations in the Early Stages of Solid-Electrolyte Interphase Formation on Graphite, ChemElectroChem, 2021, 8, 4240-4251.
