ppm


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PPM

(communications)

parts per million

The parts of a substance per million parts (by weight) of a solution; equal to 0.0001%. Abbr. ppm.

PPM

ppm

(Pages Per Minute) The measurement of printer speed. See gppm.
References in periodicals archive ?
Mercury was found the highest in Popa #12 with 90 ppm, Kaixi Beauty #60 with 85 ppm and Chanleevi #04 with 88 ppm.
Samples for chemical assay are selected based on downhole gamma logging results that indicate a grade of around 400 ppm.
2]S amount in August was by 2-3 ppm larger than in November and April, and by almost 5-6 ppm bigger against February.
The first issue elaborated on is the general similarity that exists between a profit-maximizing ppm marking up marginal cost to determine the optimal price to charge consumers, and a profit-maximizing rpm marking down marginal revenue product to determine the wage to offer workers, labor assumed to be the firm's one variable resource.
Cosper noted that the crushing contractor did a good job controlling dust, but that at 110 ppm, enough lead is in the fines stream to "merit careful handling.
The final standard, which is expected to prevent at least 79 cancer deaths over a 45-year working lifetime, also includes a 15-minute short-term exposure limit (STEL) of 5 ppm and an action level of 0.
In HDPE, 400 ppm of CF-120 alone reportedly suffices as a replacement for traditional phenolic/phosphite combinations.
The fluidity was also affected by the amount of Sb present, decreasing at Sb concentrations of about 500 ppm.
They're apparently hoping the public will believe that anything below 1 ppm is not a significant risk.
The products were screened for toxic chemicals using a portable X-Ray Fluorescence device using the following allowable limits under the Association of Southeast Asian Nations (ASEAN) Cosmetics Directive as reference: 1 part per million (ppm) for mercury, 5 ppm for arsenic and 20 ppm for lead.