Geissler is certified according to DIN EN ISO 9001 : 2008.
Moreover, only certified companies are allowed as subcontractors. Our products and our ways
of producing are subject to permanent supervision. Concerns of occupational health and safety
as well as environmental protection play an important role. By printing on serial numbers each bulb can
be traced back to the raw-material.
Geissler is not only satisfied with random sample control but also applies a 100% survey of the
production. By using an optical processing system each bulb is scrutinized as to accuracy to size and
freedom from defects. Analyzing the taken pictures as well as separating bulbs is a fully
Bulbs made by Geissler are subject to approval of all major organizations of certification:
- Underwriter Laboratories
- Factory Mutual
- Loss Prevention Certification Board
- Verband der Sachversicherer
- China Certification Center for Fire Products