3.3. Spray Factors
Spray factor values were also calculated across all RH values; the PARI Sprint Star produced the highest SF, with the 3- and 6-jet Collisons and the Omron within 1 log10 of this; SF for the SLAGs were the lowest of all. For each nebuliser the median and standard error are given below (in descending order): PARI SprintStar 2.77 × 10−6 (1.83 × 10−5); Collison 6-jet 2.23 × 10−6 (1.97 × 10−6); Collison 3-jet 1.85 × 10−6 (8.70 × 10−7); Omron MicroAIR U22 1.66 × 10−6 (1.20 × 10−6); 90 mm SLAG 6.45 × 10−7 (4.31 × 10−7); 1 inch SLAG 3.19 × 10−8 (7.5 × 10−8). The SF generated from the PARI SprintStar was significantly higher than that from the 1 inch SLAG, (p = 0.012); but no other SF’s differed between nebulisers. Humidity did not significantly impact SF values (p = 0.609).