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	Parts per notation - Wikipedia, the free encyclopedia
		This is roughly equivalent to one drop of ink in a 40 gallon drum of water, or one second per 280 hours.
		This is roughly equivalent to one drop of ink in a canal lock full of water, or one second per 32 years.
		one milligram in a metric tonne is 1 ppb by mass.
	en.wikipedia.org /wiki/Parts_per_billion (935 words)

	Millipore - Technical Library - MultiScreen Filter Assembly with Ultracel-PPB Membrane: Drug plasma protein binding ... (Site not responding. Last check: 2007-10-16)
		Immediately after centrifugation, the plate was analyzed in a fluorescent plate reader by measuring the fluorescence of the serum proteins using an excitation of 490 nm and an emission of 535 nm.
		PPB data from wells whose fluorescence exceeds the average fluorescence by more than three standard deviations of the mean should be eliminated.
		The PPB values for 9 drugs were determined with the MultiScreen filter assembly with Ultracel-PPB membrane using 1 or 2 columns of a plate (n= 8 to 16).
	www.millipore.com /publications.nsf/docs/AN1732en00 (2548 words)

	The Role of the Professional Practices Board (Site not responding. Last check: 2007-10-16)
		The PPB has a wide brief and is responsible for formulating Institute policy with regard to ethical requirements and professional standards.
		The PPB also develops guidance statements (non-definitive statements) that are intended to assist members in applying the standards or which provide guidance on a particular issue.
		PPB work programme (22kb) is also available on this website and is revised after each PPB meeting.
	www.icanz.co.nz /StaticContent/AGS/ppb_role.cfm (1692 words)

	NATIONAL COPS EVALUATION: Portland, Oregon (Site not responding. Last check: 2007-10-16)
		Investigations in the PPB were centralized during the 1980s, with large units focusing on property crimes and person crimes, and several smaller specialized units (which came and went over time) that focused on specific classes of crime.
		The PPB hired Braaten in the summer of 1990, a few months before Potter took office as Chief, and she took her mandate from the transition plan, which described a program of public education and internal education about community policing.
		But the core way the PPB has hoped to benefit from the Forum is the generation of legitimacy: By incorporating independent community input into its highest-level policy decisions, and simply by opening up decisionmaking to public eyes, the Bureau has tried to improve its image in the public eye.
	www.ncjrs.org /nij/cops_casestudy/portlan2.html (17585 words)

	PPB Developments (Site not responding. Last check: 2007-10-16)
		The PPB noted that the Working Group progressing a proposed revised Standard on Compilation Engagements will meet during October to consider the current draft of this proposed standard.
		The PPB met with representatives of the Not For Profit Task Force to discuss the results of the Task Force's work to date, particularly in relation to matters relating to Ethical and Professional Standards and their effect on members working in the sector.
		The PPB noted the Australian Auditing and Assurance Standards Board's release of the first batch of Exposure Drafts of Australian Auditing Standards re-issued as proposed statutory Auditing Standards.
	www.icanz.co.nz /StaticContent/AGS/ppbdev.cfm (464 words)

	CRS Report: RS20672 - Arsenic in Drinking Water: Recent Regulatory Developments and Issues - NLE
		On January 22, the final rule, which set the standard at 10 ppb, was published in the Federal Register with a general effective date of March 23, 2001; public water systems were given until 2006 to meet the new standard.
		In setting the standard at 10 ppb in the final rule, EPA stated that, as part of the 6-year review process, it would evaluate new data to determine if the newly promulgated standard should be revised further (66 FR 7027).
		In the final rule, EPA estimated that, with a 10 ppb standard, the annual number of bladder and lung cancer deaths avoided ranges from 21 to 30.
	www.ncseonline.org /NLE/CRSreports/water/h2o-40.cfm?&CFID=65583&CFTOKEN=85973056 (3119 words)

	Volatile Organic Compounds in Foods: A Five Year Study - Journal of Agriculture and Food Chemistry 2003, 51, 8120-8127 ...
		Benzene levels above 100 ppb were also seen in at least one sample each of a cola (138 ppb), raw bananas (132 ppb), and cole slaw with dressing (102 ppb).
		For example, about 0.1 ppb styrene has been reported in fruits and vegetables, cooked pork, chicken, fish, mussels, and eggs (27-34), but 100 ppb was found in sausage from Turkey (35).
		Although 1300 ppb was found in one cheddar cheese sample, inhalation is still the major source of human exposure.
	www.mindfully.org /Food/2003/VOCs-In-Foods1dec03.htm (3209 words)

	Lichen Senstitivity to Air Pollution (Site not responding. Last check: 2007-10-16)
		Intermediate to tolerant: from 15 to >65 ppb (Ryan and Rhodes 1992).
		Intermediate: present at 14-21 ppb (Wetmore 1993); 10-35 ppb (Ryan and Rhodes 1992); >28 ppb (Ryan 1990); 16-24 ppb (Vick and Bevan 1976); 22-26 ppb (Hawksworth and Rose 1970); absent from 21-31 ppb (Wetmore 1993); (Nash and Wirth 1988).
		Intermediate: present at 19-24 ppb (Wetmore 1993); 10-35 ppb (Ryan and Rhodes 1992); 22 ppb (Hawksworth and Rose 1970); absent at 29 ppb (Wetmore 1993); (Ryan 1990).
	www.nacse.org /lichenair/sensitivity_images (7200 words)

	Millipore - Technical Library - MultiScreen Filter Assembly with Ultracel-PPB Membrane; Volume determination methods ... (Site not responding. Last check: 2007-10-16)
		The extent of plasma protein binding (PPB) is critical to predicting the drug’s pharmacokinetic/dynamic profile.
		The assembly is then centrifuged for 45 minutes at 2000 x g and 37 °C. Once the assembly is removed from the centrifuge and the filter and receiver plates are separated, the receiver plate is scanned in a fluorescent plate reader to verify good protein rejection.
		Continue the PPB assay by removing the 25 µL aliquot from each well for determination of the drug concentration in the ultrafiltrate.
	www.millipore.com /publications.nsf/docs/an1733en00 (1647 words)

	PPB Engineering Technology - Toolmakers for Aerospace, Automotive and Engineering Industries
		PPB Engineering Technology is the trading style of Production Pattern (Bristol) Limited, a Bristol based toolmaker which continues the tradition of engineering excellence serving the aerospace, automotive and general engineering industries, built up over the last 40 years.
		From single operation tools to fully managed projects, the design and toolmaking facility of our vibrant company is well placed to serve the demanding needs of the markets in which we operate.
		In addition to our tooling operations, PPB carry out a range of specially-commissioned projects for many and varied industries.
	www.ppb.co.uk (168 words)

	Environmental Protection Agency - FactSheet: Drinking Water Standard for Arsenic (Site not responding. Last check: 2007-10-16)
		The current standard of 50 ppb was set by EPA in 1975, based on a Public Health Service standard originally established in 1942.
		EPA is setting the new arsenic standard for drinking water at 10 ppb to protect consumers against the effects of long-term, chronic exposure to arsenic in drinking water.
		While many systems may not have detected arsenic in their drinking water above 10 ppb, there may be geographic "hot spots" with systems that may have higher levels of arsenic than the predicted occurrence for that area.
	www.epa.gov /safewater/ars/ars_rule_factsheet.html (942 words)

	PPB Environmental Services (Site not responding. Last check: 2007-10-16)
		PPB Environmental Services, Inc. (PPB), a small business operating since 1985, has extensive qualifications and experience analyzing heavy metals and nutrients in diverse matrices including air, oils, biological tissues, saline waters, estuarine sediments, as well as routine surface water and ground-water monitoring samples and TCLP leachates.
		PPB staff members are experienced in working with data of a sensitive nature.
		PPB's quality manual has been approved by the Florida Department of Environmental Protection (No. 870017G).
	ppb-envlabs.com (182 words)

	Atrazine-Induced Hermaphroditism at 0.1 PPB in American Frogs (Rana pipiens): Laboratory and Field Evidence ...
		Atrazine-treated males (0.1 and 25 ppb) were sexually differentiated at metamorphosis as well, but 36% and 12% of the males treated with 0.1 and 25 ppb atrazine, respectively, suffered from gonadal dysgenesis--under-developed testes with poorly structured, closed lobules (or no lobules at all) and low to absent germ cells (Figure 4).
		Furthermore, atrazine levels varied from 15.2 ppb to 0.8 ppb over a 24-hour period (July 22-23, 2001, respectively) as a result of evaporation followed by an increase in the water level from irrigation and runoff.
		This morphology was similar to that displayed by 36% of the animals exposed to 0.1 ppb atrazine in the laboratory.
	www.mindfully.org /Pesticide/2002/Atrazine-Induced-Hermaphroditism23oct02.htm (5873 words)

	GLUTARALDEHYDE - (Organic Method #64) (Site not responding. Last check: 2007-10-16)
		The capacity of the sampler for glutaraldehyde was determined at 400 ppb in the original evaluation of Method 64.
		The formaldehyde levels studied were 20, 40, and 140 ppb; and the ozone levels were 0, 120, 300, 500, and 770 ppb.
		For example: if the ozone level were 0.020 ppm (20 ppb), the "safe air volume" would be 230 L. It is unnecessary to use OSF when collecting 15-min STS as shown by the data in Table 6.9.2.4.2.
	www.osha-slc.gov /dts/sltc/methods/organic/org064/org064.html (10554 words)

	[No title]
		Earlier this year, the US Environmental Protection Agency (EPA) issued a ruling that called for maximum allowable arsenic levels to be lowered from 50 parts per billion (ppb) to 10 ppb in an effort to cut the health risks associated with the contaminant.
		This study could not have come at a better time, as the US Environmental Protection Agency is now saying that it will do away with recently imposed reductions in the amount of arsenic allowed in the drinking water.
		The upper limit had been 50 ppb (parts per billion) for over 50 years, but scientists have been calling for a reduction of that level for a long time.
	www.mercola.com /2001/mar/24/arsenic.htm (645 words)

	US FDA/CFSAN - Perchlorate Questions and Answers
		The smallest amounts of perchlorate that this method can quantify are 1 part per billion (ppb) for produce, 3 ppb for milk, and 0.5 ppb for bottled water.
		These values are similar to those previously reported in September 2003, in a Texas Tech University study that found perchlorate levels ranging from 1.7 to 6.4 ppb in seven fluid milk samples and 1.1 ppb in one evaporated milk sample.
		In addition, perchlorate levels ranging from 1.5 ppb to 10.6 ppb were measured by the California Department of Food and Agriculture in California milk, and non-detectable levels to 3.6 ppb in California milk samples were reported by the Environmental Working Group (EWG) in June 2004.
	www.cfsan.fda.gov /~dms/clo4qa.html (2020 words)

	aqueous solutions:concentration ppm ppb (Site not responding. Last check: 2007-10-16)
		Parts per million (ppm) and parts per billion (ppb) are examples of expressing concentrations by mass.
		A similar procedure would be followed to calculate ppb.
		In the above example the pond water would be 1,100 ppb.
	www.iun.edu /~cpanhd/C101webnotes/aqueoussolns/ppmppb.html (146 words)

	Making, Loading, and Shooting Paper Patched Bullets
		The Chase patch and the crosspatch methods are strictly for breach seated cartridge target rifles or for muzzle loading target rifles equipped with false-muzzles.
		Be careful to turn in the same direction that you wrapped the patch to avoid stripping the patch off.
		Of course, some use them with those faddish, low-tech, grease-grooved bullets, but the cookie is really in the province of those that shoot according to the true faith.
	www.iastate.edu /~codi/PPB/PPB.html (3729 words)

	Evaluating Interference of THC in Hemp Food Products
		One of three volunteers consuming up to 0.6 mg/day of THC screened positive at the 50 ppb level but was confirmed at less than 5 ppb.
		One of three volunteers consuming up to 0.6 mg/day of THC screened positive at the 50 ppb level, but was also confirmed at less than 5 ppb.
		These findings suggest that even extended ingestion of considerable quantities of currently available hemp foods is not likely to produce urine samples that exceed the 50 ppb cutoff in the immunoassay screening test and a 10 or 15 ppb confirmation cutoff.
	www.naihc.org /hemp_information/content/THC_emp_drug_testing.html (1588 words)

	EPA - Arsenic in Drinking Water (Site not responding. Last check: 2007-10-16)
		EPA is affirming that the public health standard for arsenic in drinking water established in January 2001 is 10 parts per billion (ppb).
		Reports and recommendations on the science, cost of compliance, and benefits analyses in support of the 10 ppb final arsenic in drinking water rule were made available for review and public comment until October 31, 2001 [(read online) (PDF file)].
		On June 22, 2000 EPA proposed a 5 ppb standard for arsenic.
	www.epa.gov /safewater/arsenic.html (1152 words)

	Press & Plat N.V. - PPB (Site not responding. Last check: 2007-10-16)
		Press & Plat NV - PPB is a supplier of components in medium and heavy gauge sheet metal, using the latest production equipment, heavy presses fitted with robots and automatic die changing.
		PPB has efficient production from coils to pressed parts with further fabrication such as welding, machining, assembly and surface treatment.
		PPB has a patent on a single stroke riveting for the assembly of complete crossmembers.
	www.ppb.be /index2.html (82 words)

	Atrazine-Induced Hermaphroditism at 0.1 ppb in American Leopard Frogs (Rana pipiens): Laboratory and Field Evidence (Site not responding. Last check: 2007-10-16)
		Atrazine contamination is widespread and can be present in excess of 1.0 ppb even in precipitation and in areas where it is not used.
		Atrazine-treated males (0.1 and 25 ppb) were sexually differentiated at metamorphosis as well, but 36 and 12% of the males treated with 0.1 and 25 ppb atrazine, respectively, suffered from gonadal dysgenesis--underdeveloped testes with poorly structured, closed lobules (or no lobules at all) and low to absent germ cells (Figure 4).
		Furthermore, atrazine levels varied from 15.2 ppb to 0.8 ppb over a 24-hr period (22-23 July 2001, respectively) as a result of evaporation followed by an increase in the water level from irrigation and runoff.
	ehp.niehs.nih.gov /members/2003/5932/5932.html (5822 words)

	Business Times (Site not responding. Last check: 2007-10-16)
		Chemical Waste management, a unit of PPB Group, is estimated to realise a profit of RM107.63 million from the disposal
		PPB Group Bhd, through subsidiary Chemical Waste management Sdn Bhd (CWM), is to sell off its entire 25 per cent stake in Konsortium Abass Sdn Bhd to Titisan Modal (M) Sdn Bhd for RM132 million.
		CWM is 98.95 per cent subsidiary of Chemquest Sdn Bhd, which in turn is 55 per cent-owned by PPB.
	www.btimes.com.my /Current_News/BT/Thursday/Latest/20051104221425/Article (234 words)

	ATSDR - PHA - Arnold Engineering Development Center (a/k/a Arnold Air Force Base), Arnold Air Force Base Station, ...
		Arsenic (maximum 50 ppb) and lead (maximum 64 ppb) were detected above background and above their CVs.
		SWMU 4 is a series of drainage ditches that transfer contact and non-contact cooling water from the J-4 area to the Retention Reservoir.
		Chromium was detected above background and above its CV at a maximum of 990 ppb; nickel was detected above background and above the child CV, but below the adult CV, at a maximum of 340 ppb.
	www.atsdr.cdc.gov /HAC/PHA/arnoldafb/arn_p4.html (8806 words)

	NRDC: Arsenic and Old Laws - Chapter 1
		We used separate maps with graduated blue-green coloration to represent nondetects, with light blue-green representing nondetects using low levels of quantification (for example 1 ppb), and darker blue-green representing nondetects using high limits of quantification (for example 10 ppb).
		We found that the so-called reporting limits for arsenic (that is, the lowest level of arsenic in the water that states require to be reported) in many states was 5 to 10 ppb in the 1980's and even in the early 1990's.
		As is discussed in Chapter 3, NAS estimated that, considering lung and bladder cancers death studies, the total cancer risk at the current tap water standard of 50 ppb "could easily" be 1 in 100.
	www.nrdc.org /water/drinking/arsenic/chap1.asp (1670 words)

	NRDC: Bottled Water - Appendix A
		Fluoride level slightly over CA warm weather area standard of 0.8 ppm if fluoride added (if fluoride is natural, warm weather area standard is 1.4 ppm); identical FDA standard does not apply to seltzer (not defined as "bottled water").
		High level of n-isopropyl toluene and elevated level of n-butyl-benzene of unknown origin; CA law generally prohibits levels over 1 ppb of these VOCs in source water, but may have been added in processing.
		Exceeds 6 ppb tap water standard for Di(2-ethylhexyl) phthalate (DEHP), but there is no standard for bottled water for this chemical.
	www.nrdc.org /water/drinking/bw/appa.asp (1758 words)

	PUBLIC HEALH ASSESSMENT - BRICK TOWNSHIP INVESTIGATION, BRICK TOWNSHIP, OCEAN COUNTY, NEW JERSEY
		The EPA has set a Maximum Contaminant Level of 80 ppb or 0.080 mg/l for the combination of bromoform and other trihalomethanes in drinking water.
		The EPA has set a Maximum Contaminant Level of 80 ppb or 0.080 mg/l for the combination of chloroform and other trihalomethanes in drinking water.
		The actual level of exposure is most likely much less than 6 ppb since the water from the wells contaminated with PCE was diluted with water from the rest of the Brick system before it reached Brick residents.
	www.atsdr.cdc.gov /HAC/PHA/bri/bri_p4.html (3560 words)

	adem/7-app
		We are also required to replace each lead service line that we control if the line contributes lead concentrations of more than 15 ppb after we have completed the comprehensive treatment program.
		If the service line that connects your dwelling to the water main contributes more than 15 ppb to drinking water, after our comprehensive treatment program is in place, we are required to replace the portion of the line we own.
		Home treatment devices are limited in that each unit treats only the water that flows from the faucet to which it is connected, and all of the devices require periodic maintenance and replacement.
	www.alabamaadministrativecode.state.al.us /docs/adem/7ADEMAPP.htm (9174 words)

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