Table 4.

Percent of full-shift TWA personal exposures exceeding the mixture index for diacetyl and 2,3-pentanedione using modified OSHA Methods 1013/1016 by production area.

Production area	N	k	N (%) exceeding mixture index of 1.00	Median (min, max) mixture indices that exceeded 1.00
NON-FLAVOR
Café	18	17	12 (67)	1.73 (1.04–4.47)
Non-production	41	26	5 (12)	1.69 (1.08–2.32)
Production	259	130	187 (72)	2.45 (1.00–11.0)
FLAVOR
Non-production	6	4	5 (83)	7.65 (1.00–8.69)
Production	91	52	87 (96)	6.37 (1.34–114.0)

N, number of samples; k, number of workers; min, minimum; max, maximum.