PetroFLAG reagents come packaged in ten tests per box. Also included in each box is one set of calibration solutions; a “zero” and 1000 ppm standard. The box is designed to fit directly into a space provided in the field carrying case for convenient replenishment of used reagents. All reagents are premeasured and sealed in glass ampules for quality control assurance. The PetroFLAG reagents consist of patented formulations that are safe and easily disposed of as normal laboratory waste.