{"id":10,"date":"2026-10-12T06:37:34","date_gmt":"2026-10-12T06:37:34","guid":{"rendered":"https:\/\/fgvhp.com\/applications\/vhp-pass-box-material-transfer\/"},"modified":"2026-10-12T06:37:34","modified_gmt":"2026-10-12T06:37:34","slug":"vhp-pass-box-material-transfer","status":"publish","type":"page","link":"https:\/\/fgvhp.com\/ru\/applications\/vhp-pass-box-material-transfer\/","title":{"rendered":"\u041f\u0435\u0440\u0435\u0434\u0430\u0442\u043e\u0447\u043d\u044b\u0435 \u0431\u043e\u043a\u0441\u044b VHP \u0438 \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u044c\u043d\u044b\u0435 \u0448\u043b\u044e\u0437\u044b \u0434\u043b\u044f \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0432 \u043a\u043b\u0430\u0441\u0441\u044b A\/B"},"content":{"rendered":"\n\n
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Home<\/a> \/ Applications<\/a> \/ Material transfer & pass boxes<\/span><\/div>\n Application \u00b7 Material transfer<\/span>\n

VHP Pass Boxes & Material Airlocks for Grade A\/B Transfer<\/h1>\n

Every item that enters a Grade A\/B zone is a contamination route. A VHP pass box or material airlock decontaminates the exposed surfaces of that material inside an interlocked chamber, so it can cross the boundary without breaking the pressure cascade.<\/p>\n

Request a Free Application Review<\/a><\/div>\n <\/div>\n
\"Fenggu<\/div>\n<\/div><\/section>\n\n
\n
The challenge<\/span>

Why this needs a VHP step<\/h2><\/div>\n

Materials arrive from Grade C\/D areas carrying bioburden on their outer surfaces and packaging. Wiping with sporicidal agents is operator-dependent and hard to prove; autoclaving is not an option for heat-sensitive items, electronics or many single-use components.<\/p>

A VHP transfer chamber replaces the manual step with an automated, recorded cycle: dehumidify, condition, decontaminate, aerate \u2014 and only then unlock the receiving-side door.<\/p><\/div>\n<\/div><\/section>\n\n

\n Typical configuration<\/span>

Equipment options<\/h2>\n
FG-PB-VHP<\/span>

VHP pass box<\/h3>

For components, tools and sealed containers that fit a chamber. Interlocked inflatable-seal doors, H14 HEPA on inlet and outlet air, desiccant-wheel dehumidification, Siemens PLC with cycle printing.<\/p>View specifications \u2192<\/span><\/a>FG-VHP-AL250<\/span>

Material airlock with integrated VHP<\/h3>

For loads too large or heavy for a pass box \u2014 palletised packaging, equipment, environmental-monitoring kit. Runs as a normal BMS-controlled airlock between cycles.<\/p>View specifications \u2192<\/span><\/a><\/div>\n \n

Key specifications<\/h3>\n
<\/th>VHP pass box (FG-PB-VHP)<\/th>Airlock VHP (FG-VHP-AL250)<\/th><\/tr><\/thead>
Process temperature<\/th>25\u201335 \u00b0C<\/td>25\u201335 \u00b0C<\/td><\/tr>
Process humidity<\/th>40\u201360% RH<\/td>40\u201360% RH<\/td><\/tr>
VHP concentration<\/th>300\u2013500 ppm<\/td>300\u2013700 ppm<\/td><\/tr>
Full cycle time<\/th>Confirmed per load<\/td>< 60 min<\/td><\/tr>
Residual after aeration<\/th>\u2264 1 ppm<\/td>\u2264 1 ppm<\/td><\/tr>
Air filtration<\/th>H14 HEPA<\/td>H14 HEPA<\/td><\/tr>
Sporicidal efficacy<\/th>\u2265 6-log (subject to validation)<\/td>\u2265 6-log (subject to validation)<\/td><\/tr><\/tbody><\/table><\/div>\n

Figures from Fenggu product specifications. Cycle times and efficacy are confirmed by validation for your space and load.<\/p>\n<\/div><\/section>\n\n

\n Engineering & validation<\/span>

What to plan for<\/h2>\n
01<\/span>

VHP is a surface process<\/h3>

It decontaminates exposed surfaces. It does not penetrate sealed packaging, closed containers or mated surfaces, so the load must be presented with the surfaces you need treated actually exposed.<\/p><\/div>

02<\/span>

Cellulose and liquids are problems<\/h3>

Paper, cardboard and other cellulose materials absorb hydrogen peroxide, dropping the chamber concentration and extending aeration. Open liquids do the same. Plan an outer wrap or exclude them.<\/p><\/div>

03<\/span>

Load pattern is part of the validated state<\/h3>

Shadowed, stacked or touching surfaces are the worst cases. Define fixed load patterns, then place biological indicators at those locations during qualification.<\/p><\/div>

04<\/span>

Throughput drives chamber choice<\/h3>

Cycle time \u2014 not chamber size \u2014 usually limits transfers per shift. Work out how many cycles you need per day before choosing between a pass box, a larger chamber or an airlock.<\/p><\/div>

05<\/span>

Door interlocks and pressure<\/h3>

Both doors must never open together, and the chamber pressure must sit correctly between the two connected classifications during loading and unloading.<\/p><\/div><\/div>\n<\/div><\/section>\n\n

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Before you ask for a quote<\/span>

Information an engineer will need<\/h2>

Having these ready makes the first recommendation specific instead of generic.<\/p><\/div>\n

  • Largest item dimensions and weight<\/li>
  • Materials in the load (plastics, metals, paper, electronics)<\/li>
  • Transfers needed per shift<\/li>
  • Cleanroom grades on each side<\/li>
  • Data-integrity \/ audit-trail requirements<\/li>
  • Available utilities (power, compressed air, exhaust)<\/li><\/ul>\n<\/div><\/section>\n\n\n
    \n FAQ<\/span>

    Common questions<\/h2>\n
    Can a VHP pass box replace autoclaving?<\/summary>

    No \u2014 they solve different problems. An autoclave sterilises items (including their interiors) with moist heat. A VHP pass box decontaminates the exposed outer surfaces of heat-sensitive items as they transfer. Many facilities use both.<\/p><\/details>

    How long does a pass box cycle take?<\/summary>

    It depends on chamber volume, load, materials and the aeration target, so it is confirmed during cycle development for your load rather than quoted as a fixed number.<\/p><\/details>

    When should I choose an airlock instead of a pass box?<\/summary>

    When the items are too large or heavy for a chamber, or you need to move carts or equipment. The airlock performs the same four-phase cycle at room scale.<\/p><\/details><\/div>\n<\/div><\/section>\n