1. Instrument Sensor
The instrument (luminometer) quantifies the bioluminescent reaction from the ATP test. A luminometer should see low levels of light, be user-friendly, and durable to work in all types of environments. Historically and even today, luminometers have used Photomultiplier Tube (PMT) sensors to detect low levels of light. However, with advancements in technology, new solid-state Photodiodes (PD) now have the ability to detect similar low levels of light and offer lots of additional benefits over PMT. Hygiena™ instruments use advanced PD sensors and electronics, giving them the ability to detect lower levels of light than PMT-based instruments. The chart below lists the pros and cons for each sensor.