Overview
What is biodiesel testing & analysis?
Chem-Tech Laboratories provides Bio diesel testing and Bio diesel analysis. Biodiesel fuels are a wide range of fuels which are in some way derived from bio degradable substances. Many companies are becoming more aware of use of greener fuel or blended bio fuel. With advanced technology being developed, bio degradable substances are also used as feed stocks for bio diesel production production. Biodiesel can be used as a fuel for vehicles in its pure form, but it is usually used reduce vehicle emissions and as an diesel alternative.
Bio diesel Fuels are gaining increased public and scientific attention, driven by factors such as oil price spikes, need for increased energy security, and concern over greenhouse gas emissions from fossil fuels. Chem-Tech® actively works with biodiesel manufacturers and users to test biofuels to ensure that the product meets the technical and environmental requirements of modern diesel engines which are compliant for the use of Biodiesel.
We offer full complement of biodiesel testing services designed for biodiesel producers, blenders, and users which include all tests required by internationally approved standards for Biodiesel. Our Bio diesel fuel testing facility conducts the various tests on biodiesel sample as per internationally accepted ASTM, EN & IS test standards.

Fuel-use context
Biodiesel applications and blend requirements
Reduce emissions
Reduce particulate matter
Less Toxicity
Biodegradable
Testing scope
Biodiesel Testing Facility As Per Following Standards
IS 15607 (B100)
EN 14214 (B100)
ASTM D7467 (B6 to B20)
ASTM D6751 (B100)
Technical review
Common condition and contamination concerns
Water and storage contamination
Water and contamination indicators are reviewed because handling and storage can influence biodiesel quality.
Oxidation and stability
Stability-related parameters support assessment against the agreed biodiesel specification.
Blend composition
FAME and related composition testing is selected according to the biodiesel or blend requirement.
Cold-flow and specification properties
Cold-flow and other specification parameters are confirmed for the grade and intended application.
Published laboratory capability
Tests and test methods
The methods below are matched to Chem-Tech's controlled technical test lists and published laboratory capability. The final scope is confirmed for the sample, specification and current laboratory capability.
| Test / parameter | Published test method | Technical purpose | Interpretation / high-low context |
|---|---|---|---|
| Density / Specific Gravity | ASTM D1298 / ASTM D4052 / ISO 12185 | Measures mass per unit volume and supports product identification or specification review. | A result above or below the applicable range may indicate product mixing, contamination, composition change or an incorrect grade. |
| Kinematic Viscosity at 40 °C | ASTM D445 / ASTM D7042 / ISO 3104 | Characterises resistance to flow and, where applicable, viscosity response to temperature. | Higher viscosity may accompany oxidation, soot or heavier-product contamination; lower viscosity may accompany dilution, shear or lighter-product mixing. |
| Carbon Residue - RBCR | ASTM D524 / ISO 10370 | Assesses the tendency to leave carbonaceous residue under the selected procedure. | A higher result indicates greater residue-forming tendency; relevance depends on the fuel grade and application. |
| Sulphur Content | ASTM D4294 | Quantifies sulphur in the submitted fuel or material. | A higher result may affect specification compliance, emissions-related requirements or process suitability; compare with the identified grade. |
| Sulphated Ash | ASTM D874 / ISO 3987 | Measures non-combustible residue remaining after controlled combustion. | A higher result indicates more inorganic residue and may affect fuel quality, deposits or specification compliance. |
| Water Content | ASTM D6304 / ISO 12937 | Quantifies water or moisture in the submitted material. | A higher result may indicate ingress, condensation, storage or handling contamination; significance depends on the product and applicable limit. |
| Sediments by Centrifuge | Chem-Tech Test List | Assesses particulate, sediment or insoluble contamination in the sample. | A higher result indicates more suspended or insoluble material; acceptability depends on the equipment, product specification and sampling point. |
| Copper Strip Corrosion | ASTM D130 / ISO 2160 | Measures or evaluates copper strip corrosion under the published method. | A higher or lower result is interpreted against the applicable specification, sample type and available reference data; direction alone does not establish conformity. |
| Total Acid Number | ASTM D664 | Measures acidic constituents under the selected method. | An increase from the reference may support oxidation or acidic-contamination review; a single result must be compared with product and service history. |
| Total Contamination | EN 12662 | Assesses particulate, sediment or insoluble contamination in the sample. | A higher result indicates more suspended or insoluble material; acceptability depends on the equipment, product specification and sampling point. |
| Ester / FAME Content | EN 14103 | Measures or evaluates ester / fame content under the published method. | A higher or lower result is interpreted against the applicable specification, sample type and available reference data; direction alone does not establish conformity. |
| Phosphorus and Alkali Metals | ASTM D7111 | Reports selected wear, contaminant, additive or composition-related elements. | Higher or lower values require comparison with formulation, metallurgy, process inputs and trend history; one result alone does not establish the source. |
| Iodine Value | EN 14104 | Measures or evaluates iodine value under the published method. | A higher or lower result is interpreted against the applicable specification, sample type and available reference data; direction alone does not establish conformity. |
| Gross Calorific Value | ASTM D240 | Measures the heat released during controlled combustion. | A higher value indicates greater energy content per reported basis; a lower value may reflect moisture, ash or material-composition differences. |
| Flash Point - PMCC | ASTM D93 | Determines the temperature at which vapour ignites under the selected procedure. | A lower result may indicate volatile contamination or product change; a higher result is interpreted against the identified grade and method. |
| Oxidation Stability | EN 14112 | Assesses oxidation stability or condition-related spectral indicators. | Greater oxidation-related change may indicate degradation; stability results and spectral trends must be interpreted using the applicable method and reference. |
| Methanol and Ethanol Content | EN 14110 | Measures or evaluates methanol and ethanol content under the published method. | A higher or lower result is interpreted against the applicable specification, sample type and available reference data; direction alone does not establish conformity. |
| Total and Free Glycerol | ASTM D6584 | Measures or evaluates total and free glycerol under the published method. | A higher or lower result is interpreted against the applicable specification, sample type and available reference data; direction alone does not establish conformity. |
Before dispatch
Sample-submission guidance
- Use a clean, secure and appropriately labelled container.
- Provide the sample identity, fluid grade and equipment or system details where applicable.
- Share operating hours, maintenance history, the suspected problem and required specification where available.
- Contact Chem-Tech before dispatch so the laboratory can confirm the sample quantity, container and selected testing scope.
Technical output
Reporting and interpretation
The report records results and methods for the agreed scope. Customer-supplied limits or specifications can be considered when provided before testing.
Results should be reviewed with equipment history, operating conditions and previous data; a laboratory result alone does not guarantee a root-cause diagnosis or remaining service life.
Discuss your requirement
Need more information?
Share the fuel type, specification and testing objective with the Chem-Tech team.
