Replacement lights for Just Normlicht Color Communicator 2

I'd contact Graphic Technology, who make a range of compatible tubes. 

https://www.colourmanagement.net/products/gti-lite/#graphiclite_lamps

If you are in the UK, we can supply you. 

I hope this helps
neil barstow, colourmanagement net :: adobe forum volunteer
google me "neil barstow colourmanagement" for lots of free articles on colour management
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fogra standards are printing standards.  All lighting standards are ISO standards The lighting standard Globally for graphic arts is ISO 3664:2009 So refer to that when purchasing lamps for your booths and not the print standards.  They will be able to help you better and provide the lamps you require.