Spike and recovery tests of IMP in orange, lime, tomato, watermelon, tab water, and reservoir water samples.

Sample	IMP added (mM)	IMP found (mM)	RSD (%)	Recovery (%)
Orange	0.200	0.198	5.4	99.1
Lime	0.100	0.0962	3.8	96.2
Tomato	0.100	0.103	3.0	103.0
Watermelon	0.100	0.0981	4.3	98.1
Tab water	0.100	0.0972	2.9	97.2
Reservoir water	0.100	0.0980	3.8	98.0