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Table 1 Accuracy of the proposed HPLC method

From: Rapid simultaneous determination of indacaterol maleate and glycopyrronium bromide in inhaler capsules using a validated stability-indicating monolithic LC method

Formulation Concentration taken Concentration added (µg/mL) Accuracy %a
Ultibro® Breezhaler® 11, 5 µg/mL IND GLY IND GLY
5.5 2.5 99.81 100.19
15 5 100.34 101.02
22 10 100.72 100.35
Mean % ± SD     100.29 ± 0.46 100.52 ± 0.44
%RSD     0.46 0.44
Onbrez Breezhaler® 15 µg/mL IND   IND  
5.5   101.09  
15   100.21  
22   99.78  
Mean % ± SD     100.36 ± 0.67  
%RSD     0.67  
Seebri® Breezhaler® 5 µg/mL   GLY   GLY
2.5   99.42
  5   100.37
  10   100.14
Mean % ± SD      99.98 ± 0.49
%RSD      0.49
  1. aEach result is the average of three separate determinations