Determination of Indoor Air Quality in Archives and Biodeterioration of the Documentary Heritage

Table 3

Microbial counts in documents.

Type of document	Location	CFU · m^−2
		Bacteria	Fungi
Paper map 1 (M1)	Map Library (NARC)	3.5 × 10^4	2.2 × 10^4
Silk map 2 (M2)	Map Library (NARC)	7.1 × 10^5	2.0 × 10^2
Paper map 3 (M3)	AHCRD	20	3
Paper book 1 (L1)	AHCRD	2	1
Paper photograph 1 (F1)	HAMLP	2.2 × 10^3	1.0 × 10^2
Paper photograph 2 (F2)	HAMLP	3.7 × 10^4	—
Glass slide 3 (F3)	HAMLP	3.0 × 10^4	1.0 × 10^3
Silk photograph 3A (F3A)	Photo Library (NARC)	1.2 × 10^5	1.5 × 10^2
Paper photograph 4 (F4)	Photo Library (NARC)	3.9 × 10^4	2.8 × 10^4
Paper protocol 1a (P1a)	AN	1.3 × 10^3	1.4 × 10^3
Paper protocol 1b (P1b)	AN	4.0 × 10^2	5.0 × 10^2
Paper protocol 2 (P2)	AN	1.1 × 10^6	2.0 × 10^4