A reference material for calibrating and verifying the calorimeter of propellant explosion heat is composed of nitrocellulose(NC),nitroglycerine(NG),centralite and vaseline.
As a consequence of the drift of inclinometer's mechanicalness and electrical circuit during the long-dated observation,the lattice value of the inclinometer's record trunk must be calibrated termly.
Algorithms that incorporate genetic information, such as one for measuring doses of warfarin, a blood-thinner, are often inappropriately calibrated for Africans.