Heart rate is measured by counting the number of beats per minute. Someone's normal heart rate depends on things like the person's age and whether he or she leads an active lifestyle. The resting heart rate decreases as people get older. Typical normal resting heart rate ranges are: 1  babies (birth to 3 months of age): 100â150 beats per minute. 2  kids 1â3 years old: 70â110 beats per minute. 3  kids by age 12: 55â85 beats per minute.
A respirator is a piece of protective respiratory equipment designed to protect the wearer from inhaling harmful particulate matter (as in dusts, including airborne microrganisms), fumes, vapors, or gases.
Respirated.com - Respirator Catalog and Selection Guide. About Respirated.com. Respirated.com was designed to bring you unbiased respirator reviews, price comparison and a comprehensive respirator buying guide. In addition, the site offers a catalog of respirator cartridges and filters for various types of masks. What Kind of Respirator Masks Will You Find Here? You will find masks that will protect you from paint mists, sawdust, chemicals, welding fumes, germs and many more. Throughout the site you will meet various options including: N95, half face, full face and supplied-air respirators.