A. pH/mV/°C SensorMeter • Acid-base titrations • Fermentation in yogurt
The pH SensorMeter assumes 20°C for temperature compensation when measuring pH, which is adequate for school use.
A pH probe with BNC connector is required (NOT included)
• Readability: 0.1 pH
• Battery life: 40 hours typical with PP3 (NOT included)
B. Light SensorMeter • Inverse Square Law
• Rate of enzyme reaction (e.g. Starch and amylase)
• Photosynthesis in Chlorella
• Temperature and sugar concentration effects on yeast growth
The Light SensorMeter measures light intensity over a very wide range (from 0.1 to 100,000 lux) in five separate ranges in addition to a log range. The speed of response of the SensorMeter can be altered on the linear ranges enabling changes in light intensity which occur at intervals of less than 50µs to be detected. This can be used to record the 100Hz flicker of fluorescent lights. Conversely the slow setting can be used to cut out the interference from fluorescent light flickering. Supplied complete with a probe with an adjustable hood which can be used to vary the acceptance angle of the probe over a wide range. This is useful in studies where the direction of illumination is important.
• Spectral response: 400 - 700nm with optional IR filter, 400 - 1000 without filter
• Response time: Fast approx 50µs, Slow approx 50ms
A combination pH electrode with plastic shaft, gel electrolyte and fixed cable. • Measuring range: pH 0 – 14 • Temperature Range: 0 °C – 80 °C • Cable and connectors: 1.2 m BNC • Type of junction: Ceramic • Reference System: Ag/AgCl • Reference electrolyte: Gel • Type of membrane glass: U glass • Membrane resistance (25°C): <250 M • Shaft Material: Polysulfone • Shaft Diameter: 12mm • Shaft length: 120mm E8R06892