PAO Accredited Laboratories (as of Dec. 2012) - DTI

Products/
Class of Test
Specific tests or
Measurements
Lead (Pb)
2.36 Constituents of the Environment
.01 Water other than saline Biochemical Oxygen Demand
(BOD)
249 of 391
Standard Method/
Reference Standard
(AAS)
SMEWW Method 3111 B - 3030 E
Nitrate as Nitrogen Brucine Colorimetric Method
AOAC Method 973.5
Phenols Chloroform Extraction Method
SMEWW Method 5530 C
Phosphate as Phosphorus Stannous Chloride Method
SMEWW Method 4500-P D
Five(5)-day BOD Test (Azide
Modification-Dilution Technique)
SMEWW Method 5210 B
Color Visual Comparison Method
SMEWW Method 2120 B
Dissolved Oxygen (DO) Azide Modification
SMEWW Method 4500-O C
Oil and Grease Liquid-liquid,
Partition-Gravimetric Method
SMEWW Method 5520 B
pH Electrometric
(Potentiometric) Method
SMEWW Method 4500-H B
Temperature Mercury-filled Method
Surfactants (Methylene Blue-Active
Substances, MBAS)
SMEWW Method 2550 B
Anionic Surfactants as MBAS
(Chloroform Extraction-
Colorimetric Method)
SMEWW Method 5540 C
Total Solids (TS) (Dried at 103°C-105°C)
SMEWW Method 2540 B
Settleable Solids (SS) Imhoff Cone
SMEWW Method 2540 F
Total Suspended Solids (TSS) (TSS dried at 103°C-105°C)
SMEWW Method 2540D
Total Dissolved Solids (TDS) (TDS dried at 180°C)
SMEWW Method 2540 C
Chemical Oxygen Demand (COD) Open Reflux Method
SMEWW Method 5220 B
Chlorides Argentometric Method
SMEWW Method 4500-Cl B
Chromium Hexavalent (Cr +6 ) Colorimetric Method
SMEWW Method 3500-Cr B
Total Cadmium (Cd)
Nitric Acid – Hydrochloric Acid
Digestion followed by Direct Air-
Copper (Cu)
Acetylene Flame Method in Atomic
Absorption Spectrophotometry
Lead (Pb)
(AAS)
SMEWW Method 3111 B - 3030 E
Nitrate as Nitrogen Brucine Colorimetric Method
SMEWW Method 973.5
Phenols Chloroform Extraction Method
SMEWW Method 5530 C
Phosphate as Phosphorus Stannous Chloride Method
SMEWW Method 4500-P D
.03 Air Nitrogen Dioxide (NO2) Griess-Saltzman Method
WHO Selected Methods of
Measuring Air Pollutants, 1976
Method 4.2.2
Sulfur Dioxide (SO2) Pararosaniline Method:
Method of Air Sampling and
Analysis, James P. Lodge 3 rd
Edition
Lewis Publishers, Inc.
Method 704 A