HF scientific has been successfully designing and manufacturing reliable, robust, accurate, low cost of ownership turbidity instrumentation for over 35 years. The MTOL+ employs a 32 bit ARM Core Processor and allows for data storage and software updates via a USB flash drive. Data logging of readings and the last four calibrations is built into the instrument. EPA 180.1 or ISO 7027 and DIN 27027 compliant models are available. HF scientific is a company that is easy to do business with and has customer service representatives ready to attend.