205 Starter Kit pH/Temp. incl. Probe, Storage Cap, Buffers 4 & 7,holder & case The testo 205 is a robust food penetration pH/°C measuring instrument with automatic temperature compensation. The robust penetration measuring tip is interchangeable and not affected by dirt and dust thanks to the hole diaphragm. The pH tip is embedded in unbreakable plastic. Combined penetration tip with temperature probe Maintenance-free gel electrolyte 2 line display Comes with storage cap and belt/wall holder.