Central Laboratories evaluates the reaction of materials to extreme increases in temperature. Much of the company's early growth was attributable to government contracts, but recent growth has come from expansion into commercial markets. Two types of testing at CentralCentral are Heat Testing (HTT) and Arctic-condition Testing (ACT). Currently, all of the budgeted operating costs are collected in a single overhead pool. All of the estimated testing-hours are also collected in a single pool. One rate per test-hour is used for both types of testing. This hourly rate is marked up by 4545% to recover administrative costs and taxes and to earn a profit. JeffJeff LoganLogan, CentralCentral's controller, believes that there is enough variation in the test procedures and cost structure to establish separate costing rates and billing rates at a 4545% markup. He also believes that the inflexible rate structure the company is currently using is