Home / Fraction Finder Products / Sensors Sensors Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Fraction Finder Ultra Sensor Ultra-sensitive Fraction Finder sensor for use with the Fraction Finder Monitor $814.00 – $2,743.65 Select options Fraction Finder Sensor For customers that wish to have a backup, replacement, second sensor or different size sensor $1,929.00 – $1,934.00 Select options