Raw Materials. The main component of brass is copper. The amount of copper varies between 55% and 95% by weight depending on the type of brass and its intended use. Brasses containing a high percentage of copper are made from electrically refined copper that is at least 99.3% pure to minimize the amount of other materials.
Principal Scientist in Boston, Massachusetts Salary. A Principal Scientist in Boston, Massachusetts earns an average salary of $123,925 per year.
The certification also determines how much the medical laboratory scientist will be. A scientist who is a Certified Clinical Research Associate is among the high earners with a salary of $49,706 to $103,910 per year, while a Certified Clinical Research Coordinator makes $47,500 to $98,971 a year.ased on how many years theyâve been working in this field, the medical laboratory scientistâs salary for those with one to four years of experience is around Â£19,153 to Â£39,513. This is much lower than the salary of a scientist with over 10 years of experience, which is Â£20,164 to Â£59,421 per year.