Xylene Testing — Isomer Speciation, Purity & Impurity Profiling

AGT Labs provides ASTM-based testing for xylene isomers and mixed xylene streams. Our corrected, PDF-aligned scope focuses on core accredited ASTM checks used for acceptance and safety: colour (visual and tristimulus), copper strip corrosion, carbon residue, refractive index, conductivity and light-end hydrocarbon screening (ASTM references listed below). These methods support contractual acceptance and basic impurity screening where ASTM routes are specified.

We report results as traceable Certificates of Analysis using validated ASTM procedures (see Standards & Methods). For any client request that requires additional non-ASTM instrumentation or specialised speciation beyond the accredited PDF scope, we will quote those as separate, non-accredited services.

Typical clients include petrochemical producers, solvent blenders, paint and coatings manufacturers, distributors, tank farms, and QA/QC laboratories.

Service Highlights

colour assessment (visual and automatic tristimulus) for contamination or degradation checks.
copper strip corrosion to assess corrosive sulfur species per accredited methods.
Ramsbottom carbon residue for deposit-forming tendency screening.
refractive index and conductivity checks for basic purity and ionic contamination screening.
light-end hydrocarbon composition screening where applicable (LPG-range/light contaminants) as an ASTM-qualified check.

Industries We Serve

Bulk Chemical Producers & Blenders — batch verification and shipping QA/QC using ASTM acceptance tests.
Paints, Coatings & Adhesives — solvent quality checks aligned to ASTM methods affecting solvency and drying.
Distributors & Tank Farms — tank sampling and ASTM-based certificate issuance.
Environmental & Safety — ASTM-based documentation for basic VOC/impurity screening where specified.
R&D & Failure Analysis — ASTM screening to support further investigative work (additional methods quoted separately).

Laboratory Capabilities & Instrumentation

Analytical Systems

Accredited ASTM instrumentation including tristimulus colorimeters , visual colour comparators , copper strip corrosion baths, Ramsbottom carbon residue systems, refractometers, conductivity meters and hydrocarbon composition systems.

Quality & Traceability

All accredited tests performed strictly per ASTM procedures listed in our certification.
COAs include test method, units, results, LOQ/LOD (where applicable) and uncertainty.
Witnessed sampling, chain-of-custody support, and retained samples available.

Sampling, Handling & Chain of Custody

Accurate sampling is essential for ASTM compliance. Use clean, airtight containers and avoid contamination, moisture intrusion, or excessive headspace. Include sample details and any handling notes on the chain of custody form.

Containers & Handling

Use clean amber glass or metal containers suitable for aromatic solvents.
Seal tightly to prevent vapor loss or moisture ingress.
Label clearly with batch details, sample point, time, and sampler name.

Transport & Logging

Transport under stable temperature conditions as appropriate.
Record tank levels, sampling depth, and any pre-mixing information.
Chain-of-custody and witnessed sampling available for contractual needs.

Quality Assurance, Reporting & Interpretation

All accredited xylene COAs list ASTM methods used, result units, detection limits (where applicable), and measurement uncertainty. Interpretive notes highlight any deviations from expected values or contractual specifications.

Standards & Methods

All xylene testing listed on this page is aligned strictly to the ASTM methods included in AGT Labs’ accredited scope: D1209, D6045, D130, D849, D1838, D524, D1296, D1218, D2624/D1125, and D2163. Additional non-accredited tests may be offered separately on request.

FAQs — Xylene Testing

Do you provide ASTM-only COAs?

Yes — accredited tests follow their corresponding ASTM procedures exactly, and COAs include method numbers, units, and uncertainty.

Do you test for isomer content?

Isomer profiling beyond ASTM methods is available as a non-accredited add-on. Accredited testing covers only the ASTM parameters listed in our certification.

Can you detect solvent contamination?

ASTM appearance, colour, odor, refractive index, and light-end composition (D2163) can indicate many common contamination issues.

Deliverables & Value-Added Services

COA with ASTM methods, measured values, and uncertainty.
Interpretation of deviations from target specifications.
Sampling kits and witnessed sampling available for contractual testing.

Summary

AGT Labs’ ASTM-Aligned Xylene Testing delivers accurate, accredited results for purity indicators, colour, corrosivity, carbon residue, refractive index, conductivity, and light-end hydrocarbons, ensuring quality verification for industrial and commercial applications.

Xylene Testing