Table 5 Precision of in-house quality control material (infant formula) for glucose, maltose, and lactose

Compounds	Reference value (g/100 g)	Precision
		Intra-day (n=3)		Inter-day (n=15)
		S.D.	RSD (%)	S.D.	RSD (%)
		Glucose	1.17	0.05	4.55	0.04	3.42
		Maltose	0.85	0.03	3.66	0.04	4.88
Lactose	45.54	1.00	2.19	0.46	1.01