MSA - Respirator Test Data

	Respirator Test Data
	Cyclic Ethers

Tetrahydrofuran (THF)

Cartridge	Type	Concentration	Relative Humidity	Minutes to 200 ppm (OSHA PEL)	Minutes to 50 ppm
GMA	Adv. 200	200 ppm	50%	-------------	319
			70%	-------------	265
			90%	-------------	201
GMA	Adv. 200	600 ppm	50%	167	149
			70%	141	123
			90%	127	111
GMA	Adv. 200	1000 ppm	50%	106	94
			70%	91	83
			90%	84	73
GMC	Adv. 200	200 ppm	70%	-------------	190
		1000 ppm	70%	75	63
GME	Adv. 200	200 ppm	70%	-------------	174
		1000 ppm	70%	72	64
GMA	Comfo	200 ppm	70%	-------------	169
		1000 ppm	70%	68	60
GMC	Comfo	200 ppm	70%	-------------	184
		1000 ppm	70%	74	65
GME	Comfo	200 ppm	70%	-------------	190
		1000 ppm	70%	72	62

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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Respirator Test Data

Cyclic Ethers

WARNING