Refill TapWater Tour, Classroom investigation of how and why the characteristics of tap water can vary and affect everyday activities, Background information, test materials included for pH, chlorine, hardness, copper, iron, With Instructor, Student Manuals
VWR* Four-Channel Alarm Timer to 100 hours. 1.9cm digit LCD. Can set 4 separate channels. Stopwatch, time-out and time-of-day display. High decibel alarm. Memory recall. Magnetic back, flip-open easel, spring fastener and hole for use with lanyard. NIST Traceable
Department-sized access to one digital interactive case with up to 3 teacher accounts and 90 single-use student accounts. This engaging web-based lab activity helps students learn and apply key forensic science concepts while solving the case of this historic double murder.