The PTB 311E „3-in-1“ tablet hardness testing instrument is doubtless one of the most popular instruments for measuring
thickness up to 15mm,
diameter (or Length) up to 40mm (optional 70 mm), and
hardness up to 300N (optional up to 500N).
The PTB 311E is designed in compliance with the USP <1217> and EP <2.9.8> monographs. The actual design includes the possibility to enter a product code and and a date and ttime stamp onto each protocol.