Honeywell 11255 manual Body Odor, Urine Odor, Strong Food Odor, Media specifi ation

Sensory testing

Body Odor

Odor level testing was conducted in jars set up spe- cially for headspace odor testing. Sensory evalua- tion was run 20 hours after the jars had been set up to allow for ade- quate equilibration. 20 panelists participated in headspace odor level testing. The malodor in the headspace was iso-

Urine Odor

0 5 10 15 20 25

1 and 5 are statistically fidence level.

Cat urine was tested using the same appara- tus and method as the sauerkraut test. The odor source was a 6”x6” carpet swatch that had been sprayed with 0.70 grams f cat urine. The chart at left sh ws the perceived odor levels in the rooms. The differ- ences in core for hours ignificant at the 90% con-

valeric acid vapor (Synthetic Sweat Odor) that had passed through the filter material.

Untreated filter media was tested vs filter media treated with baking soda. The chart shows the average odor levels reported by panelists. A 1 to 10 scale was used, where 1 is no malodor and 10 is extreme malodor. The difference in scores was sta- tistically significant at the 99% confidence level.

Strong Food Odor

Deodorization testing was run in sensory rooms. In each room, a malodor source consisting of 100 grams of sauerkraut was placed behind a 20”x20” box fan which recirculated the air. Attached to the outlet of each fan was a

20”x20” filter.			A	filter
treated with b king soda
was attached to one				nd
an	untreated		filter
attached to		the	other.
The	g aph	he e	illus-
trates results as rated by
20 pan lists. Levels of
odor w re rated on a 1 to

10 scale. Initially (after 1 hour), both rooms showed a high level of malodor. As time passed, the room with the baking soda treated filter generated lower odor scores. The 18 hour score is statist cally s gnificant at the 90% con- fidence level.

Media specifi ation

The filter media sh ll be manufactured using fine grain sodium bic rbon te (baking soda) at a rate of 2 grams per square foot of media. The baking soda will be uniform through the thickness of the media. A majority of indi idual media fibers will be coated with t e fine-grained baking soda. The sodium bicarbonate coating will be adhered to the fibers. Proof of fiber coating and uniformity through the media is to be given in the form of electron micro- scopic photographs. The media will have a mini- mum SO2 efficiency of 40% at one hour when test- ed at the National Ambient Air Quality Standard (NAAQS) at 1000 cfm.

	Fractional Efficiency vs. Particle Diameter
100
(%)	80	PH Odor Control Pleat
Efficiency
		Standard 30% Pleat
	60
Fractional	40
	20
	0
	0.1				1				10
				Particle Diameter
		2.5 g Filter Tested at 0.15 ppm SO2
			at 1000 cfm, 72º F, 62% RH
Penetration	1
	0.8
	0.6
Fractional	0.4
	0.2
	0
	0	2	4	6	8	10	12	14	16
					Time (H)

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