ppm


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ppm

abbr.
parts per million

ppm

abbreviation for
1. (Chemistry) chem parts per million
2. (Broadcasting) Also: PPM peak programme meter

ppm

1. Also, p.p.m. parts per million.
2. pulse per minute.
Translations

ppm

ABBR =parts per millionppm
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References in periodicals archive ?
O extrato de Allamanda blanchetti nas concentracoes de 10 e 1000 ppm, assim como o extrato de Momordica charantia em todas as concentracoes, apresentaram os maiores percentuais de germinacao durante a primeira contagem.
As pointed out by Lehmann (1987), the "geochemical heritage" of Sn-mineralized granites can be as little as 5-10 ppm Sn; in view of this, samples containing greater than 10 ppm Sn are regarded as Sn-enriched and have been highlighted on Figure 18.
Foliar application of micronutrient applied in two equal doses after 30 and 60 days from sowing in the form of zinc sulphate and manganese sulphate at rates of 50 ppm Zn and 100 ppm Mn, respectively.
The concentrations of applied plant growth regulator were 0.1 ppm for NAA, 2 mM for Spd, 0.5, 1.5 and 2.5 ppm for KN and BA.
Table 1 data were obtained with the refrigerant contaminated with 50 ppm m/m of moisture and Table 2 data were obtained with the refrigerant contaminated at a higher concentration of 300 ppm m/m moisture.
Phosphorous solubilization in soil was studied by incubating 100 g of soil with tricalcium phosphate to provide 200 ppm of phosphorous.
224-226[degrees]C; IR ([V.sub.max], [cm.sup.-1]): 1728 and 1148; [sup.1]H NMR (300 MHz, CD[Cl.sub.3]) [[delta].sub.H]: 0.28 (s, 6H), 0.96 (s, 3H), 1.04 (s, 9H), 1.24-1.36 (m, 4H), 1.50-1.90 (m, 3H), 2.10-2.22 (m, 4H), 2.46-3.00 (m, 4H), 6.70 (m, 1H, J = 1.00 Hz), 6.78-7.36 (m, 2H) ppm. [sup.13]C NMR (75.4 MHz, CD[Cl.sub.3]) [[delta].sub.C]: -4.40, 13.45, 18.06, 21.70, 25.66, 25.80, 26.44, 29.50, 31.20, 35.18, 37.00, 43.40, 48.12, 49.14, 117.02, 119.90, 125.88,132.08,137.50,153.30, 219.64 ppm.
In comments submitted to the EPA, Keith Buchanan and John Harkins, Sunoco Logistics, said, "We support maintaining the current 95 ppm downstream per gallon gasoline sulfur cap to enable the current practices of pipeline interface handling.
The range of values from 178 ppm (UVM) to 1,103 ppm (UNH) is surprising to say the least.
In essence a PPM methodology is about having accurate information in the right view in order to facilitate the process of making the best choices, taking the applicable constraints into consideration.
Eight replicates were sprayed with 500 ppm aqueous Altriset[R] and eight control replicates were sprayed with water.
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