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  2. Wastewater quality indicators - Wikipedia

    en.wikipedia.org/wiki/Wastewater_quality_indicators

    Wastewater quality indicators are laboratory test methodologies to assess suitability of wastewater for disposal, treatment or reuse. The main parameters in sewage that are measured to assess the sewage strength or quality as well as treatment options include: solids, indicators of organic matter, nitrogen, phosphorus, indicators of fecal ...

  3. Total dissolved solids - Wikipedia

    en.wikipedia.org/wiki/Total_dissolved_solids

    Total dissolved solids (TDS) is a measure of the dissolved combined content of all inorganic and organic substances present in a liquid in molecular, ionized, or micro-granular (colloidal sol) suspended form. TDS are often measured in parts per million (ppm). TDS in water can be measured using a digital meter.

  4. Toxicity category rating - Wikipedia

    en.wikipedia.org/wiki/Toxicity_category_rating

    The four toxicity categories, from one to four are: Toxicity category I is highly toxic and severely irritating, Toxicity category II is moderately toxic and moderately irritating, Toxicity category III is slightly toxic and slightly irritating, Toxicity category IV is practically non-toxic and not an irritant.

  5. List of U.S. states by standard octane ratings - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._states_by...

    Eastern Nevada primarily uses 85/87/91 octane ratings. New Hampshire: 87 89 93 New Jersey: 87 89 93 New Jersey checks for fraudulent labeling of octane ratings. [8] New Mexico: 86 88 91 New York: 87 [9] 89 91/93 93 is widely available. North Carolina: 87 89 93 91 octane is commonly sold as "premium" in the western, mountainous part of the state ...

  6. Total suspended solids - Wikipedia

    en.wikipedia.org/wiki/Total_suspended_solids

    Total suspended solids. Total suspended solids (TSS) is the dry-weight of suspended particles, that are not dissolved, in a sample of water that can be trapped by a filter that is analyzed using a filtration apparatus known as sintered glass crucible. TSS is a water quality parameter used to assess the quality of a specimen of any type of water ...

  7. Hazardous Materials Identification System - Wikipedia

    en.wikipedia.org/wiki/Hazardous_Materials...

    An example of a HMIS III label for Diesel Fuel. The Hazardous Materials Identification System (HMIS) is a proprietary numerical hazard rating that incorporates the use of labels with color bars developed by the American Coatings Association as a compliance aid for the OSHA Hazard Communication (HazCom) Standard. [1][2] The name and abbreviation ...

  8. List of NFL career passing touchdowns leaders - Wikipedia

    en.wikipedia.org/wiki/List_of_NFL_career_passing...

    Tom Brady holds the record for most passing touchdowns with 649, followed by Drew Brees with 571 and Peyton Manning with 539. Aaron Rodgers leads all active players with 475 career passing touchdowns. Brady also is the record holder for the most career playoff passing touchdowns with 88. He is followed by Joe Montana and Rodgers, with both tied ...

  9. IP code - Wikipedia

    en.wikipedia.org/wiki/IP_Code

    IP65 touchscreen display IP65 LED lamp. The IP code or ingress protection code indicates how well a device is protected against water and dust. It is defined by the International Electrotechnical Commission (IEC) under the international standard IEC 60529 [1] which classifies and provides a guideline to the degree of protection provided by mechanical casings and electrical enclosures against ...