MSA - Respirator Test Data

	Respirator Test Data
	Ketones

Methyl Ethyl Ketone (MEK)

Cartridge	Type	Concentration	Relative Humidity	Minutes to 200 ppm (OSHA PEL)	Minutes to 50 ppm
GMA	Adv. 200	200 ppm	50%	-------------	423
			70%	-------------	372
			90%	-------------	222
GMA	Adv. 200	600 ppm	50%	223	200
			70%	180	160
			90%	148	134
GMA	Adv. 200	1000 ppm	50%	136	126
			70%	130	118
			90%	106	96
GMC	Adv. 200	200 ppm	70%	-------------	303
		1000 ppm	70%	105	91
GME	Adv. 200	200 ppm	70%	-------------	248
		1000 ppm	70%	99	87
GMA	Comfo	200 ppm	70%	-------------	238
		1000 ppm	70%	98	87
GMC	Comfo	200 ppm	70%	-------------	264
		1000 ppm	70%	91	80
GME	Comfo	200 ppm	70%	-------------	262
		1000 ppm	70%	89	80

The following Ketones are in the same chemical family as Methyl Ethyl Ketone:

5-Methyl-3-Heptanone
3-Heptanone
3-Pentanone
4-Methyl-2-Pentanone
2-Heptanone
2-Pentanone
Mesityl Oxide
Cyclohexanone

WARNING

Do not use the data presented in this study as the sole factor in determining the respirator cartridge change-out schedule. An appropriate change-out schedule must be developed by a knowledgeable professional. It should be based on additional factors including the actual workplace conditions, work practices and other conditions which may affect respiratory protection. Failure to determine an appropriate change-out schedule can cause overexposure and result in serious personal injury or death.

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