Profile: Pollardwater.com offers PAL300 personal automatic leakfinder kits that consist of a transmitter, receiver, 2 sensors, 1 battery charger and headphones. Our Hanna's aluminum colorimeter is a microprocessor-based portable meter that determines the aluminum concentration in water. We also market Orion ion-selective electrodes, in which the design of the sensing element determines the sensitivity and selectivity for the ion of interest.