Avoid equipment graveyards: rigorous process to improve identification and procurement of effective, affordable, and usable newborn devices in low-resource hospital settings

Table 2 Summary of environmental exposure conditions and relevant standards

Test condition	Description	Relevant standard
High temperature	Constant device operation under high heat; 50 °C and relative humidity < 50% for 16 h	IEC 60068–2-2
High humidity	Constant device operation under high humidity; relative humidity 95% cycling between 25 °C and 40 °C for 48 h, held at each temperature twice for 12 h	IEC 60068–2-30
Dust exposure	Recirculated 400 g/m² dust particles < 75 μm for 4 h	IEC 60069–2-68
Line voltage fluctuations and power failure	Varied line voltage by ± 8%, ± 12%, and simulated total power failure	IEC 61000–4-14

ISSN: 1471-2431