Sentence examples for ppm or a from inspiring English sources
Finally, we show experimental results obtained with as-manufactured devices, with a short-term limit of detection for carbon dioxide (CO2) estimated at 1 ppm or a noise equivalent absorption (NEA) of 3 × 10−5 AU.
Laterite blocks used in construction of the Koh Ker monuments either had a low Sr content of less than 300 ppm or a high Sr content of greater than 400 ppm.
A protective factor was the iodisation level of salt (inadequately iodised < 15 ppm: OR = 0.56, 95% CI = 0.38 - 0.84).
They concluded that AML can be caused by excessive benzene exposure, meaning a peak benzene exposure greater than 20 ppm or an estimated cumulative benzene exposure greater than 250 ppm-years.
If your nitrite (with an i ) or ammonia levels are above 0 ppm, or your nitrate (with an a ) levels are above 20 ppm, the water could be toxic to your fish.
Anatomical results showed that groups with high pH 9.5, high hydrogen concentration 0.84 ppm, or both (groups A, B and C), had significant inhibition of gastric damage compared with the group drinking facility tap water (group F).
A study conducted in 2009 concerning the effect of zinc oxide nanoparticles on neural stem cell apoptosis suggested that nano-sized zinc oxide would cause cell death when present in concentrations of 12 ppm or higher in a dose-dependent but not size-dependent manner [ 4].
The need to measure across the large range of concentrations (1 ppm for CO and 1 μg/m for PM2.5 to 2,000 ppm for CO and 100 mg/m for PM2.5) with a resolution of 1 ppm or μg/m can present a challenge.
Male Sprague-Dawley rats were acquired at 3-weeks-of-age and fed either a control diet with 198 ppm Fe or an identical diet with 3 ppm Fe.
Participants with exhaled CO levels of 6 ppm or above [ 34] or a NicAlert test at level three or above according to the manufacturer will be considered current smokers.
DMSO is widely found at levels of three parts per million (ppm) or less and is a common component of natural waters, including seawater.
