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Results 1 - 20 of 3,220 for "hard water" within all areas of EPA.

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Hard Water  Alkaline water containing dissolved salts that interfere with some industrial processes and prevent soap from lathering. Water may be considered hard if it has a hardness greater than the typical hardness of water from the region. Some textbooks define hard water as water with a hardness of more than 100 mgAL as calcium carbonate. -  From Drinking Water Technical & Legal Terms
  - Search all glossaries for terms containing hard water

Antimicrobial Testing Methods & Procedures: MB-30-00
http://www.epa.gov/pesticide-analytical-methods/antimicrobi...
Information about ATMP - SOP Preparation of hard water and other diluents for antimicrobial products - MB-30-00
Antimicrobial Testing Methods & Procedures: MB-22-03
http://www.epa.gov/pesticide-analytical-methods/antimicrobi...
Information about ATMP - SOP Disinfectant Product Preparation and Sampling Procedures - MB-22-03
[More results from www.epa.gov/pesticide-analytical-methods]
Water Softeners | WaterSense | US EPA2016-02-10
http://www3.epa.gov/watersense/products/watersofteners.html
brief description of page
Page 242 - WaterSense at Work2016-02-10
http://www3.epa.gov/watersense/commercial/docs/watersense_a...
... Potable water used during other wash or rinse stages might. be treated with
a water softener to remove hard water, which can cause scale buildup. ...
Page 224 - WaterSense at Work2016-02-10
http://www3.epa.gov/watersense/commercial/docs/watersense_a...
... osmosis and distillation systems, can also soften water. In a cation exchange
water softener, hard water with positively charged calcium and. ...
[More results from www3.epa.gov/watersense/commercial/docs]
1998 Annual Report | Aluminum Toxicokinetics Oral ...2016-02-11
http://cfpub.epa.gov/ncer_abstracts/index.cfm/fuseaction/di...
... was empty. Half of the animals in each of these two groups received
the 26 Al in soft and half in hard water. Blood was ...
'Greener' Surfactants from Bio-Based Waste as Efficient ...2014-01-14
http://cfpub.epa.gov/ncer_abstracts/index.cfm/fuseaction/di...
... with improved properties for ensuring better cleaning efficiency of hydrophobic
dirt/soil, increase water solubility and improve stability in hard water. ...
[More results from cfpub.epa.gov/ncer_abstracts/index.cfm/fuseaction]
US EPA, Pesticide Product Label, ACCEL (CONCENTRATE) DISINFECTANT CLEANER,01/19/20162016-01-20
http://www3.epa.gov/pesticides/chem_search/ppls/074559-0000...
... of product per gallon of water), in the presence of 200 ppm hard water, 5%
serum load and 5 minute contact time, unless otherwise noted, this ...
US EPA, Pesticide Product Label, KAY SOLIDSENSE SANITIZER,01/21/20162016-01-21
http://www3.epa.gov/pesticides/chem_search/ppls/005389-0002...
... Sanitizer is an effective sanitizer for use on food contact surfaces in 60 seconds
at 200 – 400 ppm active and up to 500 ppm hard water against: ...
[More results from www3.epa.gov/pesticides/chem_search/ppls]
FORMULA 206-1x BIO-WASH™
http://www.epa.gov/emergency-response/formula-206-1x-bio-wa...
Technical product bulletin: this surface washing agent is most effective on hydrocarbon and bio-organic soiling on hard surfaces including beaches, shorelines, and rocks; specifically to aid in the removal of oil and oil saturated soiling.
Acute Toxicity of Zinc to Rainbow and Brook Trout ...
http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=91013JZ5.txt
... 0.76) and 2.5 (1.9 to 3.0) mg Zn/liter for rainbow and 2.0 (1.6 to 2.4) and 6.0
(5.0 to 7.0) mg Zn/liter for brook trout in soft and hard water, respectively ...
Research and Development: Health and Environmental ...
http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=9100RHLZ.txt
... hardness concentrations ranged from 10-13, 40-48, 160-180 and 280-320
mg/l as CaCO, for very soft, soft, hard and very hard water, respectively. ...
[More results from nepis.epa.gov/Exe/ZyPURL.cgi]
Notification of Intent to Develop Draft Efficiency and Performance Specifications for Cation Exchange Water Softeners2015-10-16
http://www3.epa.gov/watersense/docs/water-softener_noi508.p...
... Cation exchange water softeners are used to soften water by exchanging the
calcium and magnesium ions contained in hard water with sodium (or ...
PowerPoint Presentation2016-02-10
http://www3.epa.gov/watersense/docs/sanitary-ws-es-webinar_...
... spray force requirements • Inspect showerheads often and remove any scale
build-up from hard water Showerhead Efficiencies 20 Page 21. ...
[More results from www3.epa.gov/watersense/docs]
OPPIN: Details for | Pesticide Labels | Pesticides | US EPA
http://ofmpub.epa.gov/apex/pesticides/f?p=ppls:102:0::no::p...
Pesticide Product Label
Method 549.2 Determination of Diquat and Paraquat in Drinking Water by Liquid-Solid Extraction
http://www.epa.gov/dwanalyticalmethods/method-5492-determin...
This is a high performance liquid chromatography (HPLC) method for the \ndetermination of diquat and paraquat in drinking water sources and finished drinking water.
Ambient Water Quality Criteria for Lead2012-09-26
http://www3.epa.gov/npdes/pubs/owm586.pdf
... demonstrating that daphnids were three times more sensitive to lead in soft
than in hard water (Table 1). ... bluegill in soft than in hard water. ...
[PFP#882635915]2000-09-21
http://www3.epa.gov/npdes/pubs/acute_manual.pdf
... Dilution Water. For tests performed to meet NPDES objectives, synthetic,
moderately hard water should be used. The dilution ...
[More results from www3.epa.gov/npdes/pubs]
Your Input is Shaping the Clean Water Rule – EPA Connect
http://blog.epa.gov/blog/2015/04/your-input-is-shaping-the-...
... We provide systems that naturally enhance water quality – be it hard
water or irrigated water or industrial or sea water. ...
Standardized Efficacy Study Report and Efficacy Study Summary
http://www.epa.gov/pesticide-registration/standardized-effi...
The study report form contains all of the required elements of a study report as found in 40 CFR part 160, and meets the requirements of PR Notice 2011-3. We encourage registrants to use this non-mandatory report format to facilitate the review process.
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