Chemical pollution happens when certain compounds are improperly disposed of. This can affect the environment by disrupting the processes of the ecosystem. Chemical pollution happens when certain compounds are improperly disposed of. This can affect the environment by disrupting the processes of the ecosystem.
Options + NIST Calibration Certificate Order Code: /C - NIST (National Institute of Standards and Technology) Certification of Calibration states that the pressure gauge was tested at multiple test points and is within its stated tolerance of accuracy. Gauge is shipped with a sticker on the side of the gauge noting the certification number and date, and NIST certificate. Dual Scale Dials US Gauge offers most pressure ranges in dual scale, such as psi & kPa, psi & BAR, psi & kg/cm2, or single scale metric such as kPa, kg/cm2, or BAR.
NIST uses a temperature of 20 Â°C (293.15 K, 68 Â°F) and an absolute pressure of 1 atm (14.696 psi, 101.325 kPa). This standard is also called normal temperature and pressure (abbreviated as NTP). The International Standard Metric Conditions for natural gas and similar fluids are 288.15 K (15.00 Â°C; 59.00 Â°F) and 101.325 kPa.