ppb


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ppb

Abbreviation for parts per billion.

ppb

parts per billion, usually based on a mass or volume of a substance.
References in periodicals archive ?
"We are not certain whether the clinic has followed the proper hygienic and professional standards in preparing the medicines," Dr Tola Jahar, PPB team member said.According to PPB's Naomi Mukuya, the operation was necessitated by the claims made by some of the drug makers.
Embryos exposed to 200 ppb and higher concentrations of mercuric chloride all showed increased muscle fiber degeneration compared to muscle fibers observed in control embryos (200 ppb, p=0.03; 300 ppb, p<0.0001 and 400 ppb, p<0.0001).
At 9.37am, PPB Group was thinly traded with 300 shares changing hands at RM19.20.
Results: The severity of PPB was based on the elevation in depressed mood following a protocol to induce sad mood.
The lowest and the highest Zn concentrations were <1 ppb in honey samples from Sanliurfa and Mardin and 237 ppb in honey sample from Hatay, respectively.
Classroom 42, which is also a home economics room, showed 75 ppb. Three sinks in Classroom 43, also a home economics room, reached 42 ppb, 47 ppb and 25 ppb.
The threshold for aflatoxin excretion in cows' milk is 15 ppb in their feed [34].
Some water systems could meet the regulatory standard of less than 15 ppb in winter while exceeding that threshold during warmer months, the researchers warn.
That would provide a legal remedy to people with dioxane in their water at concentrations higher than 7.2 ppb.
Those results indicated the water contained 57.00 parts per billion (ppb) of trichloroethylene (TCE).
It boasts a 2 ppb detection capability in NH3 and sub-ppb in inert matrices.