№ files_lp_4_process_3_081583
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Checklist for laboratory procedures and quality control compliance for ammonia nitrogen analysis using approved and modified EPA methods, including sample preservation, equipment, reagents, and documentation requirements.
Year:
1993
Region / City:
North Carolina, USA
Subject:
Water quality analysis, ammonia nitrogen measurement
Document Type:
Laboratory checklist / Standard Operating Procedure verification
Agency:
North Carolina Department of Environmental Quality / Division of Water Resources
Primary Analyst:
[Not specified]
Prepared by:
[Name of person completing checklist]
Equipment:
Spectrophotometer, pH meter, borosilicate glass distillation equipment
Methods:
EPA Method 350.1 Rev. 2.0, Hach Method 10205 TNT
Reagents:
Borate buffer, boric acid solution, ammonia-free water, Hach TNTplus kits, NaOH, dechlorinating reagent, sulfuric acid, sodium hypochlorite, sodium phenolate, sodium nitroprusside, EDTA buffer
QC Requirements:
Compliance with EPA 350.1 Rev. 2.0 for modified methods
Sample Handling:
Preservation with H2SO4 to pH <2, refrigerated transport ≤6 ºC, analysis within 28 days
Regulatory References:
40 CFR Part 136, 15A NCAC 2H .0805, SM 4500 NH3 B-2011
Price: 8 / 10 USD
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Year:
1993
Region / City:
North Carolina
Topic:
Laboratory Certification, Ammonia Nitrogen Analysis
Document Type:
Standard Operating Procedure
Organization / Institution:
NC DEQ/DWR Laboratory Certification Branch
Author:
Not specified
Target Audience:
Laboratories conducting ammonia nitrogen analysis
Period of Validity:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Note:
Year
Topic:
Refrigerant Systems, Safety Standards
Document Type:
Safety and Compliance Check List
Organization / Institution:
J & E Hall International
Target Audience:
Clients, CDM Coordinators, Principal Contractors
Year:
2023
Topic:
Chemistry
Document Type:
Educational Material
Author:
Not specified
Target Audience:
Students, Chemistry learners
Period of Action:
Ongoing
Approval Date:
Not specified
Date of Changes:
Not specified
Institution:
Not specified
Region:
Not specified
Note:
Context description
Year:
2025
Date of circulation:
18 December 2025
Document type:
WTO notification addendum
Subject:
Adoption of standard for fertilizers – ammonium sulphate (sulphate of ammonia)
Standard reference:
DEAS 911: 2023, Second Edition
Adopted standard designation:
US EAS 911: 2024
Date of adoption:
30 September 2025
Notifying Members:
Burundi, Kenya, Rwanda, Tanzania, Uganda
Adopting country:
Uganda
Related WTO notifications:
G/SPS/N/BDI/81; G/SPS/N/KEN/248; G/SPS/N/RWA/74; G/SPS/N/TZA/316; G/SPS/N/UGA/300
Type of measure:
Notification of adoption, publication or entry into force of regulation
Comment period:
Not applicable
Responsible authority:
Uganda National Bureau of Standards
Address:
Plot 2-12 ByPass Link, Bweyogerere Industrial and Business Park, P.O. Box 6329, Kampala, Uganda
Contact:
Tel +(256) 4 1733 3250/1/2; Fax +(256) 4 1428 6123; E-mail [email protected]
; Website https:
//www.unbs.go.ug
Official WTO addendum communicating the adoption by Uganda of the East African Standard DEAS 911:
2023 on specifications for ammonium sulphate fertilizer under the designation US EAS 911:2024.
Year:
2023
Region / city:
United States / unspecified
Topic:
Environmental Services, Refrigeration
Document Type:
Case Study
Organization:
ERG Environmental Service
Author:
Chas Petersen
Target Audience:
Contractors, Environmental Service Providers, General Contractors
Period of Action:
Not specified
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
2023
Region / city:
Global
Topic:
Ammonia measurement
Document type:
Research kit
Organization:
Abcam
Author:
Not specified
Target audience:
Researchers
Validity period:
Not specified
Approval date:
Not specified
Modification date:
Not specified
Year:
2024
Region / City:
Gopalpur, Odisha
Topic:
Green Hydrogen, Green Ammonia, Renewable Energy
Document Type:
Certification Announcement
Organization / Institution:
TÜV Rheinland, Avaada Group
Author:
TÜV Rheinland, Avaada Group
Target Audience:
Industry professionals, Energy sector stakeholders, Environmental regulators
Period of Validity:
N/A
Approval Date:
02 July 2024
Date of Changes:
N/A
Year:
2000–2019
Region / Country:
Israel
Topic:
Environmental pollution / Agriculture
Document type:
Statistical indicator report
Institution:
Ministry of Environmental Protection
Data source:
Central Bureau of Statistics (CBS), OECD
Main focus:
Livestock and fertilizer ammonia emissions
Measurement unit:
Tons per year
Calculation method:
Coefficients based on livestock numbers
Reliability note:
Estimates based on calculations, not continuous measurements
Key contributors:
Poultry, cattle, sheep and goats, pigs
Environmental impact:
Air quality, nitrogen deposition
Comparison:
OECD countries
Investigation period:
2000–2019
Year:
2021
Region / City:
Illinois
Topic:
Agricultural Safety / Anhydrous Ammonia
Document Type:
FAQ
Organization:
Illinois Department of Agriculture
Author:
Illinois Department of Agriculture
Target Audience:
Growers, grower farm operators, farm managers, farm employees
Effective Period:
Until April 1, 2022 (for certification)
Approval Date:
Not specified
Change Date:
Not specified
Training Method:
Online and in-person
Cost:
Free
Note:
Year
Subject:
Biochemical Oxygen Demand (BOD) Analysis
Document Type:
Standard Operating Procedure
Organization / Institution:
North Carolina Department of Environmental Quality (DEQ)
Target Audience:
Laboratories conducting water quality analysis
Year:
2011
Region / City:
North Carolina
Topic:
Laboratory certification, quality control
Document Type:
Certification checklist
Organization / Institution:
North Carolina Department of Environmental Quality (NC DEQ)
Author:
NC DEQ / DWR
Target Audience:
Laboratory personnel
Effective Date:
2011
Date of Revision:
Not specified
Note:
Year
Subject:
Wastewater and Groundwater Laboratory Certification
Document Type:
Checklist
Organization / Institution:
NC DEQ/DWR
Target Audience:
Laboratory Analysts, Environmental Testing Personnel
Year:
2015
Region / City:
North Carolina
Topic:
Laboratory Certification
Document Type:
Standard Operating Procedure
Organization / Institution:
North Carolina Department of Environmental Quality (NC DEQ)
Author:
NC DEQ / DWR
Target Audience:
Laboratories performing wastewater and groundwater testing
Period of Validity:
Indefinite (subject to review every 2 years)
Approval Date:
Not specified
Date of Changes:
Not specified
Year:
2021
Region / City:
North Carolina
Subject:
Total Phosphorus Analysis
Document Type:
Standard Operating Procedure (SOP)
Organization:
North Carolina Department of Environmental Quality (NC DEQ)
Author:
NC DEQ/DWR
Target Audience:
Laboratory personnel, analysts
Validity Period:
N/A
Approval Date:
N/A
Date of Amendments:
N/A
Year:
2026
Region / City:
North Carolina
Topic:
Water Quality Analysis, Fecal Coliform Testing
Document Type:
Standard Operating Procedure (SOP)
Organization:
North Carolina Department of Environmental Quality
Author:
NC DEQ/DWR Laboratory Certification Branch
Target Audience:
Laboratory Technicians, Water Quality Analysts
Effective Period:
Ongoing
Approval Date:
Not specified
Revision Date:
Not specified
Note:
Year
Subject:
Water quality, laboratory analysis
Document Type:
Certification checklist
Organization / Institution:
North Carolina Department of Environmental Quality (NC DEQ)
Target Audience:
Laboratory analysts and environmental quality professionals
Year:
2007
Region / City:
North Carolina
Theme:
Laboratory Certification, Wastewater, Groundwater
Document Type:
Checklist
Agency:
North Carolina Department of Environmental Quality (NC DEQ)
Author:
NC DEQ/DWR Laboratory Certification Branch
Target Audience:
Laboratory Analysts, Environmental Testing Personnel
Period of Validity:
Ongoing review every 2 years
Approval Date:
November 7, 2007
Modification Date:
Not specified