4-glove (2+2) inert atmosphere glove box made of two connected modules sharing a single atmosphere. Both modules share one common vacuum and gas purification system; the PLC-controlled closed-loop purification reduces in-chamber O2 and H2O levels down to ≤1 ppm. The wide 2440mm combined working volume suits multi-step sample preparation or projects requiring several operators working at once.

Key Features

2 modules, 4 gloves (2+2) — a single, combined 2440mm atmosphere volume
Shared vacuum and closed-loop purification system keeps O2 and H2O levels ≤1 ppm
PLC-controlled touch screen; working pressure freely settable within ±15 mbar, with automatic protection above ±16 mbar
Large (360×600mm) and small (150×300mm) dual antechambers for fast sample transfer
Integral flange viewing window, 20mm flange thickness, vacuum O-ring seal
Internal organic solvent adsorber (≥2 kg activated carbon) for extra contamination control
Remote monitoring support via mobile app (WeChat)

Technical Specifications

Module Structure	2 connected modules, shared vacuum/purification system, 4 gloves total (2+2)
Chamber Internal Dimensions	2440 × 750 × 900 mm (combined)
Shelf Rack	Stainless steel, 3 layers, adjustable
Glove Ports	4 pcs (2+2), aluminum alloy, natural color oxidation, outer nuts, O-ring seal
Chamber Lighting	LED, mounted above the glass window, diffuse reflection
Viewing Window	Integral flange, 20mm flange thickness, vacuum O-ring seal
Large Antechamber	360 × 600 mm effective area; manual or automatic inner/outer door
Small Antechamber	150 × 300 mm; blue inner/outer covers; spring-loaded locking
Gas Purification Capacity	Oxygen removal 60 L, water removal 2 kg; in-chamber H2O & O2 ≤ 1 ppm
Circulation Blower	90 m³/h flow rate, VFD (variable frequency drive)
Valve System	Integrated valve seat (single-channel valves not acceptable)
Leakage Rate	< 0.001 vol%/h
Control Panel	Touch screen; ±15 mbar pressure setting, auto-protection above ±16 mbar; mobile access via WeChat
Vacuum System	Rotary vane pump with oil mist filter; manual or PLC start; evacuates antechamber
Moisture Analyzer	0–500 ppm range, 0.01 ppm accuracy, P2O5 sensor
Oxygen Analyzer	0–1000 ppm range, 0.01 ppm accuracy, ZrO2 sensor (fuel-cell type analyzers not acceptable)
Internal Organic Solvent Adsorber	In-chamber, Ø130 × 250 mm, ≥2 kg activated carbon, quick-replaceable

Optional: refrigerator unit, additional purification/filtration system, heated or mirror-surface transition bin, and similar add-ons available on request.

Applications

Lithium/sodium-ion battery and electrode material research
Synthesis and characterization of air- and moisture-sensitive materials
Powder metallurgy and fine chemicals
University/industrial labs needing multi-step sample prep with several simultaneous operators
Special welding and OLED production/R&D processes