The CMA instruments are available to trained user-operators 24 hours/day and sample drop-off is also offered for mass spectrometry. In addition to the analytical instrumentation, the CMA provides collaborations, analytical assistance, and training. User‑Operated Instrument Time: - Invoicing occurs quarterly. - Hourly charges are based on the logon time. - Rates are subject to change without prior notice. - MS and photon charges are based on the reserved calendar time or the logon time, which ever is greater. - Laboratory assistance in MI 551 is provided by CMA staff at a rate of $50/hour.