A lamp breaking is extremely unlikely to have any impact on your health. If a lamp breaks, ventilate the room for 30 minutes and remove the parts, preferably with gloves. Put them in a sealed plastic bag and take it to your local waste facilities for recycling. Do not use a vacuum cleaner.
The MSR DE offers 1800 watts of power but has the same dimensions as an MSI 1200W lamp, enabling fixtures to combine power with compact design. Or, to put it another way: it gives more light for more punch. The MSR filling provides a pure, white light and high consistency color impression over MSR range, it also ensures a stable color temperature over its entire lifetime.