31. Since August, 13 national store chains, including Wal-Mart, CVS and Kmart, have agreed to stop selling mercury thermometers . 32. Mercury thermometers are still widely used for certain scientific applications because of their greater accuracy and working range.33. A mercury thermometer should be inserted for 3 to 5 minutes; a digital thermometer should remain inserted until it beeps. 34. He was first apprenticed to a physician in St Andrews where he became skilled in constructing mercury thermometers in glass. 35. I don't know the actual temperature because I only had a mercury thermometer and it went " mushy " on me. 36. The IPK has been stored within centimeters of a mercury thermometer since at least as far back as the late 1980s. 37. "It's kind of like holding seven leaking mercury thermometers in your mouth 365 days a year, 24 hours a day ." 38. But he said parents should take their mercury thermometers to a hazardous-waste collection center instead of throwing them in the trash. 39. One is a traditional mercury thermometer that is needed to calculate the expansion or contraction of the fluid in the barometer proper. 40. Q : I keep hearing about mercury thermometers , how horrible it is if they break, and we should only have digital thermometers.