Study on Quality Standard of Processed Curcuma Longa Radix

Table 6

Effects of various factors on .

Effect
	Mean	RSD (%)	Mean	RSD (%)
Instruments
Shimadzu LC-20A	0.9788	1.02	1.0580	1.31
Agilent 1200	0.9931		1.0778
HPLC column
Welch Ultimate XB	0.9752	1.22	1.0398	0.8
SPOLAR	0.9993		1.0563
Diamonsil	0.9886		1.0457
Column temperature
25°C	0.9903	0.06	1.0472	0.02
30°C	0.9899		1.0469
35°C	0.9908		1.0467
Wavelength
423 nm	0.9798	0.96	1.0239	1.95
425 nm	0.9894		1.0445
427 nm	0.9989		1.0645
Flow Rate
0.90 mL/min	0.9895	0.02	1.0460	0.06
0.95 mL/min	0.9892		1.0460
1.00 mL/min	0.9889		1.0448
1.05 mL/min	0.9889		1.0447
1.10 mL/min	0.9892		1.0452