Dry Field Mapping Kit, includes cork-covered base, 30cmx26cm; pad of 25 sheets pre-printed conductive paper 28cmx21.5cm; pad of 100 sheets preprinted paper for drawing fields; ten metal-headed push pins; a silver conductive pen
MIcrostirrer, easily attaches to end of a pH Sensor, Conductivity Probe, Dissolved Oxygen Probe or Ion-Selective Electrode. Magnetic field turns paddle wheel of Microstirrer, resulting in enhanced stirring near electrode tip, works with any magnetic stirrer