Table 3

Surface/equipment	Number of alleles detected
	Before decontamination		After decontamination
	RFU≥100	RFU≥50	RFU≥100	RFU≥50
Drawer of laboratory cupboard (outside surface)	3	6	0	0
Laboratory bench	7	9	0	1
On/off button laminar flow cabinet	6	6	0	0
Handle laboratory freezer	8	13	0	0
Handle laboratory fridge	6	8	0	3
Rack for tubes (empty)	10	11	0	0
Vortex	2	9	0	1
Electronic pipette	3	5	0	0

Table 3: Numbers of alleles detected on surfaces and equipment before and after decontamination with DNA ZAP^TM (Applied Biosystems).