All chemicals within the lab are registered in GROS. This allows you to see if a specific chemical that you may need is already available within the Nijenborgh 4 laboratories, which can be very convenient. In order to use GROS, you have to login to the database using your p-number and password. You can login at

The main drawback of the database is that it is in Dutch. The most convenient way to use the database is therefore to make use of its CAS number.

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