A professional who tests and inspects gypsum and gypsum wallboard during manufacture, using variety of testing devices and procedures to maintain product quality. Respnsibilities include:

• Collects, measures, and weighs samples of minerals and chemical additives, such as gypsum and vermiculite.
• Performs tests on samples, using such equipment as ovens and molds, and performs calculations to measure such factors as gypsum purity, particle size, and hardness, applying arithmetic formula.
• Tests wallboard panels to verify factors, such as adhesion of paper to gypsum, edge hardness, and strength of panels.
• Observes designated worker performing standard wallboard tests and measurements, reads results, duplicates tests, and compares test results and measurements to verify accuracy of measurement.
• Collects and records results of sampling and testing to maintain record of product quality.
• Inspects wallboard at job sites to substantiate customer's claim of product defects.
• Formulates compensation offers to resolve claims and submits offer to management for approval.