Grade 2 cleaning.
Grade 2 is the stricter of the two cleaning grades in the Generic Standard of ASML (GSA): tight limits on particles and molecular contamination, for vacuum and in-machine semiconductor parts. We clean stainless steel and titanium parts to Grade 2, verify them and deliver them vacuum-packed with a cleanliness certificate.
What Grade 2 means.
- Tight limits on particles and molecular contamination
- Clean handling from production through packing
- No bare-hand contact
- Approved lubricants only
Checked before the certificate.
Cleanliness is verified before the cleanliness certificate is issued – under an ISO 9001:2015 quality system, with full lot traceability.
- 01Visual inspectionParts are inspected for visible contamination and residue.
- 02Particle measurementParticles on the surface are measured against the limits of the grade.
- 03RGA / outgassingResidual gas analysis shows what a part releases under vacuum.
From stock, to your drawing, or your own parts.
100.000+ electropolished and Kolsterised A2 and A4 parts in stock – socket head cap screws, hex nuts, washers and dowel pins, cleaning included.
Your fasteners and turned or milled parts in stainless steel or titanium, cleaned to Grade 2 or Grade 4 and returned vacuum-packed. EPK on request.
Stainless or titanium parts made to your drawing, with or without vacuum hole – same cleaning and vacuum packing.
Need the standard cleanroom level?
Grade 4 is the standard cleanroom level, typical for cleanroom assembly outside the most critical zones.
Grade 2 cleaning – frequently asked questions.
- What is Grade 2 cleaning?
- The stricter of the two cleaning grades in the Generic Standard of ASML (GSA). Tight limits on particles and molecular contamination, with clean handling from production through packing – no bare-hand contact, approved lubricants only. Typical use: vacuum and in-machine semiconductor parts.
- When do you need Grade 2 instead of Grade 4?
- When your specification calls for it – typically for vacuum and in-machine semiconductor parts. Grade 4, the standard cleanroom level, is typical for cleanroom assembly outside the most critical zones.
- How does HBS verify Grade 2 cleanliness?
- By visual inspection, particle measurement and RGA / outgassing analysis before the cleanliness certificate is issued. Parts are vacuum-packed per 5, 10, 25, 50 or 100 and traceable to their lot.
- How fast can HBS deliver Grade 2 cleaned parts?
- EPK parts from stock in 3–4 weeks including cleaning; your own stainless steel or titanium parts in 2–3 weeks.
Cleaned to Grade 2.
Tell us the parts and the quantity – Terry replies within 24 hours.
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