Standards and Methods

PTL has years of experience and expertise in performing a variety of compendial methods and technical standards published by international standards organizations. These standards uphold the quality standards required for each organization. These lists are not exhaustive. Contact PTL to discuss the specifics of a test method and your specific testing needs.

Please contact us to inquire about standards or methods not listed.

Number
Type
Title

Particle Size Distribution Analyses

B214
ASTM
Standard Test Method for Sieve Analysis of Metal Powders
B330
ASTM
Standard Test Methods for Estimating Average Particle Size of Metal Powders and Related Compounds Using Air Permeability
B822
ASTM
Standard Test Method for Particle Size Distribution of Metal Powders and Related Compounds by Light Scattering
C110
ASTM
Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
C117
ASTM
Standard Test Method for Materials Finer than 75µm (No. 200) Sieve in Mineral Aggregates by Washing
C136/C136M
ASTM
Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates
C690
ASTM
Standard Test Method for Particle Size Distribution of Alumina or Quartz Powders by Electrical Sensing Zone Technique
C1070
ASTM
Standard Test Method for Determining Particle Size Distribution of Alumina or Quartz by Laser Light Scattering
D197
ASTM
Standard Test Method for Sampling and Fineness Test of Pulverized Coal
D1921
ASTM
Standard Test Methods for Particle Size (Sieve Analysis) of Plastic Materials
D3977
ASTM
Standard Test Methods for Determining Sediment Concentration in Water Samples
D4438
ASTM
Standard Test Method for Particle Size Distribution of Catalysts and Catalyst Carriers by Electronic Counting
D4464
ASTM
Standard Test Method for Particle Size Distribution of Catalytic Materials by Laser Light Scattering
D5158
ASTM
Standard Test Method for Determination of Particle Size of Fine Mesh and Powdered Activated Carbon by Air Jet Sieving
D5861
ASTM
Standard Guide for Significance of Particle Size Measurements of Coating Powders
E2490
ASTM
Standard Guide for Particle Size Distribution of Nanomaterials in Suspension by Photon Correlation Spectroscopy (PCS)
E2834
ASTM
Standard Guide for Particle Size Distribution of Nanomaterial in Suspension by Nanoparticle Tracking Analysis (NTA)
F1877
ASTM
Standard Practice for Characterization of Particles
F2149
ASTM
Standard Test Method for Automated Analyses of Cells — the Electrical Sensing Zone Method of Enumerating and Sizing Single Cell Suspensions

Adsorption & Porosimetry

B922
ASTM
Standard Test Method for Metal Powder Specific Surface Area by Physical Adsorption
C1069
ASTM
Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption
C1240
ASTM
Standard Specification for Silica Fume Used in Cementitious Mixtures
C1274
ASTM
Standard Test Method for Advanced Ceramic Specific Surface Area by Physical Adsorption
D1993
ASTM
Standard Test Method for Precipitated Silica-Surface Area by Multipoint BET Nitrogen Adsorption
D3663
ASTM
Standard Test Method for Surface Area of Catalysts and Catalyst Carriers
D3908
ASTM
Standard Test Method for Hydrogen Chemisorption on Supported Platinum Catalysts by Volumetric Vacuum Method
D4222
ASTM
Standard Test Method for Determination of Nitrogen Adsorption and Desorption Isotherms of Catalysts and Catalyst Carriers By Static Volumetric Measurements
D4284
ASTM
Standard Test Method for Determining Pore Volume Distribution of Catalysts and Catalyst Carriers by Mercury Intrusion Porosimetry
D4365
ASTM
Standard Test Method for Determining Micropore Volume and Zeolite Area of a Catalyst
D4404
ASTM
Standard Test Method for Determination of Pore Volume and Pore Volume Distribution of Soil and Rock by Mercury Intrusion Porosimetry
D4567
ASTM
Standard Test Method for Single-Point Determination of Specific Surface Area of Catalysts and Catalyst Carriers Using Nitrogen Adsorption by Continuous Flow Method
D4641
ASTM
Standard Practice for Calculation of Pore Size Distributions of Catalysts and Catalyst Carriers from Nitrogen Desorption Isotherms
D4780
ASTM
Standard Test Method for Determination of Low Surface Area of Catalysts and Catalyst Carriers by Multipoint Krypton Adsorption
D5604
ASTM
Standard Test Methods for Precipitated Silica — Surface Area by Single Point B.E.T. Nitrogen Adsorption
D6556
ASTM
Standard Test Method for Carbon Black — Total and External Surface Area by Nitrogen Adsorption
D6761
ASTM
Standard Test Method for Determination of the Total Pore Volume of Catalysts and Catalyst Carriers
D6767
ASTM
Standard Test Method for Pore Size Characteristics of Geotextiles by Capilary Flow Test
F2952
ASTM
Standard Guide for Determining the Mean Darcy Permeability Coefficient for a Porous Tissue Scaffold

Density

B329
ASTM
Standard Test Method for Apparent Density of Metal Powders and Compounds Using the Scott Volumeter.
B527
ASTM
Standard Test Method for Tap Density of Metal Powders and Compounds
B923
ASTM
Standard Test Method for Metal Powder Skeletal Density by Helium or Nitrogen Pycnometry
C110
ASTM
Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
C357
ASTM
Standard Test Method for Bulk Density of Granular Refractory Materials
C604
ASTM
Standard Test Method for True Specific Gravity of Refractory Materials by Gas-Comparison Pycnometer
D2638
ASTM
Standard Test Method for Real Density of Calcined Petroleum Coke by Helium Pycnometer
D4164
ASTM
Standard Test Method for Mechanically Tapped Packing Density of Formed Catalyst and Catalyst Carriers
D4781
ASTM
Standard Test Method for Mechanically Tapped Packing Density of Fine Catalyst Particles and Catalyst Carrier Particles
D5550
ASTM
Standard Test Method for Specific Gravity of Soil Solids by Gas Pycnometer
D5965
ASTM
Standard Test Methods for Density of Coating Powders
D7481
ASTM
Standard Test Methods for Determining Loose and Tapped Bulk Densities of Powders Using a Graduated Cylinder

Physical Measurements

C204
ASTM
Standard Test Methods for Fineness of Hydraulic Cement by Air-Permeability Apparatus
C311/C311M
ASTM
Standard Test Methods for Sampling and Testing Fly Ash or Natural Pozzolans for Use in Portland-Cement Concrete
D1293
ASTM
Standard Test Methods for pH of Water
D2196
ASTM
Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational Viscometer
D2866
ASTM
Standard Test Method for Total Ash Content of Activated Carbon
D2867
ASTM
Standard Test Methods for Moisture in Activated Carbon
D2974
ASTM
Standard Test Methods for Moisture, Ash, and Organic Matter of Peat and Other Organic Soils
D5907
ASTM
Standard Test Methods for Filterable Matter (Total Dissolved Solids) and Nonfilterable Matter (Total Suspended Solids) in Water
D7891
ASTM
Standard Test Method for Shear Testing of Powders Using the Freeman Technology FT4 Powder Rheometer Shear Cell
E1131
ASTM
Standard Test Method for Compositional by Thermogravimetry
E1868
ASTM
Standard Test Methods for Loss-On-Drying by Thermogravimetry
E2402
ASTM
Standard Test Method for Mass Loss, Residue, and Temperature Measurement Validation of Thermogravimetric Analyzers
E2865
ASTM
Standard Guide for Measurement of Electrophoretic Mobility and Zeta Potential of Nanosized Biological Materials
Number
Type
Title

Particle Size Distribution Analyses

787-7
ISO
General Methods of Test for Pigments and Extenders — Part 7: Determination of Residue on Sieve — Water Method — Manual Procedure
4497
ISO
Metallic Powders — Determination of Particle Size by Dry Sieving
4610
ISO
Plastics — Vinyl Chloride Homopolymer and Copolymer Resins — Sieve Analysis Using Air-Jet Sieve Apparatus
6274
ISO
Concrete — Sieve Analysis of Aggregates
8130-1
ISO
Coating Powders — Part 1: Determination of Particle Size Distribution by Sieving
8130-13
ISO
Coating Powders — Part 13: Particle Size Analysis by Laser Diffraction
8397
ISO
Solid Fertilizers and Soil Conditioners — Test Sieving
8871-3
ISO
Elastomeric parts for parenterals and for devices for pharmaceutical use – Part 3: Determination of released-particle count
13319
ISO
Determination of Particle Size Distributions — Electrical Sensing Zone Method
13320
ISO
Particle Size Analysis — Laser Diffraction Methods
13322-1
ISO
Particle Size Analysis — Image Analysis Methods — Part 1: Static Image Analysis Methods
14708-1 (14.2)
ISO
Implants for surgery – Active implantable medical devices – Part 1: General requirements for safety, marking and for information to be provided by the manufacturer
16232
ISO
Cleanliness of Components & Systems
20480-1
ISO
Fine Bubble Technology — General Principles for Usage and Measurement of Fine Bubbles (Ultra Fine Bubbles Only)
21501-2
ISO
Determination of particle size distribution – Single particle light interaction methods – Part 2: Light scattering liquid-borne particle
counter)
21501-3
ISO
Determination of particle size distribution – Single Particle light interaction methods – Part 3: Light extinction liquid-borne particle
counter
22412
ISO
Particle Size Analysis — Dynamic Light Scattering (DLS)
22498
ISO
Plastics — Vinyl Chloride Homopolymer and Copolymer Resins — Particle Size Determination by Mechanical Sieving
24235
ISO
Fine Ceramics (Advanced Ceramics, Advanced Technical Ceramics) — Determination of Particle Size Distribution of Ceramic Powders by Laser Diffraction Method

Surface Area & Pore Size Analysis

8008
ISO
Aluminum Oxide Primarily Used for the Production of Aluminum — Determination of Specific Surface Area by Nitrogen Adsorption
9277
ISO
Determination of the Specific Surface Area of Solids by Gas Adsorption — BET Method
15901-1
ISO
Evaluation of Pore Size Distribution and Porosity of Solid Materials by Mercury Porosimetry and Gas Adsorption — Part 1: Mercury Porosimetry
15901-2
ISO
Pore Size Distribution and Porosity of Solid Materials by Mercury Porosimetry and Gas Adsorption — Part 2: Analysis of Mesopores and Macropores by Gas Adsorption
15901-3
ISO
Pore Size Distribution and Porosity of Solid Materials by Mercury Porosimetry and Gas Adsorption — Part 3: Analysis of Micropores by Gas Adsorption
18757
ISO
Fine Ceramics (Advanced Ceramics, Advanced Technical Ceramics) — Determination of Specific Surface Area of Ceramic Powders by Gas Adsorption Using the BET Method

Density

787-2
ISO
General Methods of Test for Pigments and Extenders — Part 2: Determination of Matter Volatile at 105 Degrees C
2811-1
ISO
Paints and Varnishes – Determination of Density – Part 1: Pycnometer Method
3953
ISO
Metallic Powders — Determination of Tap Density
8130-2
ISO
Coating Powders — Part 2: Determination of Density by Gas Comparison Pyknometer (Referee Method)
8460
ISO
Instant Coffee — Determination of Free-Flow and Compacted Bulk Densities
8967
ISO
Dried Milk and Dried Milk Products — Determination of Bulk Density
12154
ISO
Determination of Density by Volumetric Displacement — Skeleton Density by Gas Pycnometry
18852
ISO
Rubber Compounding Ingredients — Determination of Multipoint Nitrogen Surface Area (NSA) and Statistical Thickness Surface Area (STSA)

Physical Measurements

124
ISO
Total Solids — Determination of Total Solids Content
976
ISO
Rubber and plastics – Polymer dispersions and rubber latices – Determination of pH
1652
ISO
Rubber latex – Determination of apparent viscosity by the Brookfield test method
11357-1
ISO
Plastics — Differential Scanning Calorimetry (DSC) — Part 1: General Principles
11357-2
ISO
Plastics — Differential Scanning Calorimetry (DSC) — Part 2: Determination of Glass Transition Temperature and Glass Transition Step Height
11357-3
ISO
Plastics — Differential Scanning Calorimetry (DSC) — Part 3: Determination of Temperature and Enthalpy of Melting and Crystallization
11357-7
ISO
Plastics — Differential Scanning Calorimetry (DSC) — Part 7: Determination of Crystallization Kinetics
11358-1
ISO
Plastics — Thermogravimetry (TG) of Polymers — Part 1: General Principles
13099-1
ISO
Colloidal Systems – Methods for Zeta-Potential Determination — Part 1: Electroacoustic and Electrokinetic Phenomena
18373-1
ISO
Rigid PVC Pipes — Differential Scanning Calorimetry (DSC) Method — Part 1: Measurement of the Processing Temperature
22768
ISO
Raw Rubber – Determination of the Glass Transition Temperature by Differential Scanning Calorimetry (DSC)
28343
ISO
Rubber Compounding Ingredients — Process Oils — Determination of Glass Transition Temperature by DSC
Number
Type
Title

Standard Methods for Examination of Water and Wastewater

2540B
SM
Total Solids Dried at 103-105C
2540C
SM
Total Dissolved Solids Dried at 180C
2540D
SM
Total Suspended Solids Dried at 103-105C
2540E
SM
Fixed and Volatile Solids Ignited at 550C
2540F (Gravimetric Method)
SM
Settleable Solids
2540G
SM
Total, Fixed and Volatile Solids in Solid and Semisolid Samples
2560B
SM
Electric Sensing Zone Method
2560C
SM
Light-Blockage Methods
2560D
SM
Light-Scattering Method

Some related wastewater Particle testing and water particle testing testing techniques include Single Particle Optical Sensing (SPOS), Single Particle Light Obscuration, and Nanoparticle Tracking Analysis.

Number
Type
Title

Particle Size Distribution Analyses

<429>
USP
Light Diffraction Measurement of Particle Size
<776>
USP
Optical Microscopy (Particle Size Characterization)
<786>
USP
Particle Size Distribution Estimation by Analytical Sieving
<787>
USP
Subvisible Particulate Matter in Therapeutic Protein Injections
<788>
USP
Particulate Matter in Injections
<789>
USP
Particulate Matter in Ophthalmic Solutions
<811>
USP
Powder Fineness

Surface Area & Pore Size Analysis

<267>
USP
Porosimetry by Mercury Intrusion
<268>
USP
Porosity By Nitrogen Adsorption-Desorption
<1241>
USP
Water-Solid Interactions in Pharmaceutical Systems – Determination of Sorption Desorption Isotherms

Density

<616>
USP
Bulk Density (Method I) and Tapped Density (Method II) of Powders
<699>
USP
Density of Solids

Microscopy Services

<695>
USP
Crystallinity
<729>
USP
Globule Size Distribution in Lipid Injectable Emulsions
<776>
USP
Optical Microscopy (Crystallinity Characterization)
<1181>
USP
Scanning Electron Microscopy (SEM Only)
Corn Starch
USP
NF Monograph for Corn Starch Identification Test A

Physical Measurements

<281>
USP
Residue on Ignition
<432>
USP
Determination of Zeta Potential by Electrophoretic Light Scattering
<661>
USP
Plastic Packaging Systems and Their Materials of Construction (Differential Scanning Calorimetry Only)
<731>
USP
Loss on Drying
<733>
USP
Loss on Ignition
<791>
USP
pH
<831>
USP
Refractive Index
<841>
USP
Specific Gravity (Method I)
<846>
USP
Specific Surface Area
<891>
USP
Thermal Analysis
<912>
USP
Viscosity-Rotational Methods
<1174>
USP
Powder Flow (Angle of Repose Only)