Ppm example sentences

"Ppm" Example Sentences

1. According to regulations, the sulfur content of diesel fuel cannot exceed 15 ppm.
2. The lead levels in the drinking water were well below the acceptable limit of 5 ppm.
3. The air quality standard for particulate matter is 35 micrograms per cubic meter, or roughly 15 ppm.
4. The CO2 level in the atmosphere is currently around 400 parts per million, or 400 ppm.
5. Concentrations of hydrochloric acid above 5 ppm can damage some types of metals.
6. The parts per million of nitrogen in the soil greatly affected crop yield.
7. The OSHA permissible exposure limit for chlorine is 1 ppm.
8. The apple juice showed a low mold count of only 10 ppm.
9. New refrigerators must have less than 5 ppm of refrigerant leaks per year.
10. The sulfur dioxide content in the air was measured at 15 ppm.
11. The copper pipes showed trace amounts of lead at less than 2 ppm.
12. The sodium content in the water supply exceeded 200 ppm, indicating it was hard water.
13. Carbon monoxide detectors sound alarms at concentrations above 50 ppm.
14. Benzene levels were measured at 5 ppm in the groundwater.
15. The EPA limit for arsenic in drinking water is 10 ppm.
16. The soil testing lab reported 500 ppm of nitrogen in the sample.
17. The bottled water had a total dissolved solids content of 125 ppm.
18. Monthly monitoring showed ammonia levels of 1 to 2 ppm in the wastewater.
19. According to the MSDS, the maximum allowable exposure to methyl ethyl ketone is 200 ppm.
20. The parts per million of mercury in fish caught near the chemical plant was alarmingly high.
21. Formaldehyde levels above 0.1 ppm can cause health issues for sensitive individuals.
22. The recommended level of chlorine in drinking water is less than 4 ppm.
23. Soil with copper levels above 50 ppm can reduce plant growth.
24. Ozone monitoring equipment detected peaks of 0.05 ppm during thunderstorms.
25. The legal limit for lead in drinking water is 15 ppm.
26. The ppm of salts in the solution greatly affected plant growth.
27. Testing showed toluene levels of 10 ppm in groundwater wells near the factory.
28. The concentration of dissolved oxygen in the stream was 6 ppm.
29. The acidity of the solution was measured in parts per million of hydrogen ions.
30. EPA rules require less than 2 ppm of asbestos in drinking water.
31. The manufacturer recommended adding 180 to 220 ppm of nitrogen fertilizer.
32. The groundwater had iron levels over 300 ppm, indicating it was contaminated.
33. The odor threshold for hydrogen sulfide gas is around 0.5 ppm.
34. The maximum contaminant level goal for chloroform in drinking water is zero ppm.
35. Gasoline must contain less than 10 ppm of sulfur to reduce air pollution.
36. The hardness of the well water was measured at 400 ppm.
37. Manufacturers limit impurities in semiconductors to less than 1 ppm.
38. The amount of chloride in the soil sample was reported as 200 ppm.
39. The parts per million of nitrates in the drinking water Supply exceeded EPA limits.
40. The air inside the factory tested positive for volatile organic compounds at 20 ppm.
41. Monitoring wells near the landfill showed zinc levels up to 500 ppm.
42. The salt content of the ocean averages around 35,000 ppm.
43. The nitrate fertilizer contained 260 ppm of actual nitrogen.
44. The solution tested positive for fluoride at 1.2 ppm.
45. High calcium levels above 200 ppm can cause scale buildup in pipes and appliances.
46. The herbicide was effective at application rates as low as 5 ppm.
47. Parts per million is a common unit for measuring concentrations of substances.
48. The room had an increased carbon dioxide level of 1200 ppm.
49. The ppm of pesticide residue on the produce was within legal limits.
50. The daily standard for ozone exposure is 70 ppb, or roughly 0.07 ppm.
51. The wastewater treatment plant discharged water with copper levels under 1 ppm.
52. The chemical spill released benzene into the air at concentrations up to 10 ppm.
53. The boron concentration in the fertilizer was reported as 130 ppm.
54. The chlorine content of the pool was maintained between 1 and 3 ppm.
55. Testing showed hydrogen sulfide concentrations of 3 ppm in the factory air.
56. The parts per million of phosphorus in fertilizer formulations varies widely.
57. Soil testing reveals adequate potassium levels between 120 and 180 ppm.
58. The sodium hypochlorite sanitizer was applied at 25 ppm to sanitize surfaces.
59. The orthophosphate concentration in the drinking water was approximately 3 ppm.
60. The EPA recommends keeping mercury levels below 0.2 ppm in drinking water.

Common Phrases

1. The EPA standard for ozone is 75 ppm.
2. The PPM of chlorine in drinking water is regulated to be below 4.0 ppm.
3. The ambient CO2 level in the atmosphere currently averages around 400 ppm.
4. Methane consists of over 50% ppm of natural gas.
5. Hydrogen sulfide levels need to stay below 10 ppm to avoid health issues.
6. The OSHA standard for airborne benzene is 1 ppm.
7. The recommended moisture content of wood for indoor use is between 6-12% which is about 60-120 ppm.
8. Parts per million or ppm is a measure of concentration that equals one unit of a material per one million units of a solution.
9. Tolerable metal concentrations in wastewater discharge are usually measured in ppm.
10. High fluoride concentrations above 4 ppm in drinking water can cause fluorosis.
11. The U.S. set the legal limit for lead in drinking water at 15 ppm.
12. The allowable limit of arsenic in drinking water is 10 ppm according to the EPA.
13. Toluene has an occupational exposure limit of 200 ppm.
14. Instrument calibration typically requires calibration gas standards measured in ppm.
15. Gas chromatography is commonly used to measure contaminants in the parts per million or ppm range.
16. The recommended pH range for freshwater aquariums is between 6.5 and 8.0 ppm.
17. Coffee bean defects are commonly assessed and classified according to percent ppm.
18. Fertilizer recommendations are often provided in terms of nitrogen (N), phosphorus (P), and potassium (K) ppm.
19. The fragrance for different perfumes is measured in terms of milligrams per kilogram or ppm.
20. Farmers test their soil nutrients like phosphorus and potassium by measuring their concentration in ppm.
21. Volatile organic compounds (VOCs) in indoor air are often measured in micrograms per cubic meter which is equivalent to ppm.
22. Vinegar usually contains around 5-8% acetic acid which is equivalent to 50,000 to 80,000 ppm.
23. Jewelry isoften assessed for purity based on parts per million of precious metals like gold and silver.
24. PPM can refer to both weight by weight (wt/wt) or weight by volume (wt/vol) concentration units.
25. Estimated upper acceptable threshold limit for toxicological exposure is 1,000 ppm.
26. Drinking water is ideally chlorinated to 25-30 ppm of free chlorine residual for disinfection.
27. Impurities in chemical reagents may be specified as less than 1 ppm.
28. Maximum contaminant level goals for carcinogens in drinking water usually do not exceed 0.01 ppm.
29. Production of semiconductor-grade chemicals requires contaminants to be below 1 ppb or 0.001 ppm.
30. Engine oil additives are typically added at concentrations between 500 and 3,000 ppm.
31. Mercury limits for certain types of waste streams can be as low as 0.2 ppm.
32. Nutrients like fertilizers are measured in terms of elemental composition like nitrogen (N) ppm.
33. Exposure limits for select dusts and particulates can be as high as 10 mg/m3 which equals 10,000 ppm.
34. Gold alloys are commonly designated by parts per thousand (ppm) of precious metal content.
35. Colorimetric techniques are often used to determine contaminants in the parts per billion (ppb) to parts per million (ppm) range.
36. The ideal liposome size is usually within 100 to 200 nanometers which is 0.1 to 0.2 ppm.
37. High boron concentrations above 0.5 ppm can cause plant toxicity issues.
38. Lead acid batteries typically contain 1,200 to 1,500 ppm of sulfuric acid concentration.
39. Oxygen concentration in atmosphere is about 209,000 ppm.
40. Residual chlorine levels should remain between 1 and 5 ppm for disinfection in pools.
41. Winemakers adjust acidity and sugar levels of wine grapes in terms of total titratable acidity (TA) and °Brix which correspond to ppm and specific gravity measurements, respectively.
42. Electrochemical sensors are commonly used to detect gases in ppm concentration levels.
43. Semiconductor manufacturers use ultrapure water with 18.2 MOhm resistivity corresponding to 0.055 ppb total dissolved solids or ppm.
44. Tap water contains fluoride concentrations between 0.5 and 1.2 ppm.
45. Air pollutants like particulate matter (PM2.5) are regulated to concentrations below 15 μg/m3 which equals 12 ppm.
46. Nutrients in hydroponics solutions are commonly reported in ppm concentration units.
47. Drinking water guidelines recommend manganese levels below 50 ppb or 0.05 ppm.
48. Engineered nanomaterials are frequently characterized and reported in terms of ppm concentrations.
49. Air quality guidelines recommend sulfur dioxide levels below 500 ppb corresponding to 0.5 ppm.
50. Acceptable limits for silt content in irrigation water is usually below 50 ppm.
51. Beer contains hop compounds like alpha acids between 10 and 60 ppm depending on type and amount added.
52. Soil salinity above 4,000 ppm can adversely impact plant growth and yield.
53. Fertilizer recommendations for lawns and gardens are commonly provided in terms of pounds of nitrogen per 1,000 square feet which corresponds to ppm units.
54. Herbicides and pesticides are applied at concentrations of a few ppm up to several hundred ppm depending on the target organism and product.
55. The detection limit of gold via atomic absorption spectroscopy is around 0.1 ppb or 0.0001 ppm.
56. Groundwater contamination risks are evaluated based on contaminant concentration levels ranging from ppb to ppm.