According to one pundit, the company has a hard-to-beat mix of quality products and services.An analyst launched coverage of Thermo Fisher Scientific (TMO 2.15%) after market close on Monday, and the stock was experiencing a little pop the following day as a result. On Tuesday, it closed more than 2% higher in price, contrasting well with the 0.6% slide of the benchmark S&P 500 (^GSPC -0.59%).Buy, says a new bullHappily for investors, that pundit is bullish on Thermo Fisher's future. William Blair analyst M ...