<p>Infant incubator is one of the most important medical devices for newborn survival, especially preterm. However, aside from its benefits, some irregularities can be found on the devices that could lead to infant mortality, such as temperature deviations. The problem can be minimized by testing the infant incubator temperature parameter in accordance with IEC 60601-2-19 standard. However, there are various types of temperature sensors for related tests. Therefore K-Type and T-Type Thermocouples are compared in order to provide recommendations for infant incubator testing. The measurement technique used were referred to the instructions stated in IEC 60601-2-19 sub-clause Stability (with tolerance ±0.5^oC) and sub-clause Uniformity (with tolerance ±0.8^oC). For K-type thermocouples, the highest stability results at 32^oC is -0.2^oC and at 36^oC is -0.4^oC, while the highest uniformity results at 32^oC is -0.1^oC and at 36^oC is -1.6^oC, with the uncertainty of 1.7^oC. For T-type thermocouples, the highest stability results at 32^oC is 0.4^oC and at 36^oC is -0.4^oC, while the highest uniformity results at 32^oC is 0.7^oC and at 36^oC is 0.8^oC, with the uncertainty of 0.3^oC. The results of the independent t-test showed a different average, where the T-type thermocouples was higher than the K-type thermocouples. In other words, T-type thermocouples could be recommended for infant incubators testing.</p>

To accommodate current technological developments and laboratory conditions, ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission) published the latest version of the ISO/IEC 17025 standard in 2017.Complying with ISO/IEC 17025:2017 enables laboratory to provide measurement results that are valid and traceable to international unit system. SNSU-BSN as National Metrology Institute (NMI) in Indonesia has transformed its management system from the old version ISO/IEC17025:2005 to the current ISO/IEC 17025:2017 in 2019. This study explains the process of SNSU-BSN transition in order to establish a management system complying with ISO/IEC 17025:2017. A comparison between the implementation of the old and the current ISO/IEC 17025 was explained along with its impacts and benefits.

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A large number of industrial needs to the sound level meter (SLM) calibration has encouraged the laboratory to develop a qualified calibration system. As one of the SLM calibration methods required by the standard, the coupler method is considered as the most convenient to be implemented, especially for the secondary laboratory. Therefore, the aim of this work is to compare the SLM calibration for the frequency weighting parameter by this method using the instrument standards that comprise of a multifunction acoustic calibrator and a working standard of pressure microphone (WS2-P Microphone). Moreover, the result of frequency weighting calibration using these standards, therefore, is compared to the reference value required by IEC 61672-1. From the result, the deviation values of these standards are obtained relative to the reference. At the low to middle frequencies, the deviation values are slight relatively, while at the higher frequency, it tends to bigger. In addition, these methods also support the development system of noise dosimeter and sound level meter calibration that still under research through the scheme of Incentive Research Program for the National Innovation System in 2020.

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