Mean and SD of 10 Measurements of Residual Activity in 6 Different Types of Syringes
| Residual activity (%) | ||||||
| Syringe | Syringe capacity (mL) | Manufacturer | Brand | Mean | SD | P |
| Brand A | 3 mL | Covidien | Monoject 3 cc | 19.7 | 2.6 | – |
| Brand B | 3 mL | BD Medical | BD 3 cc | 21.5 | 5.6 | NS |
| Brand C | 1 mL | Covidien | Monoject 1 cc insulin | 17.5 | 3.2 | NS |
| Brand D | 1 mL | Covidien | Monoject 1 cc tuberculin | 15.6 | 2.8 | P < 0.01 |
| Brand E | 1 mL | Terumo Medical | Terumo 1 cc | 13.1 | 3.0 | P < 0.001 |
| Brand F | 3 mL | DPS Meditech | DPS 3 cc | 11.4 | 3.6 | P < 0.001 |
NS = not statistically significant.