Our Services

Petroleum Testing, Inspection & Certification — Coordinated from Port to Certificate

From dip tests and cargo sampling to laboratory reporting and final documentation, Tzero Labs supports buyers, sellers, refineries, tank farms, and trading companies at every stage of the petroleum quality assurance process.

Quality Verification Cargo Inspection Lab Coordination HSE Compliant

Core service domains

Product Testing

Cargo Inspection

Documentation

Compliance

Petroleum cargo inspection at port terminal

Oil and gas port terminal with tankers and storage tanks

What We Do

End-to-End Petroleum Quality Assurance

Tzero Labs operates at the intersection of petroleum product quality, port logistics, and transaction integrity. Whether you are moving a cargo of EN590 diesel, Jet A-1 aviation fuel, crude oil, D6 fuel oil, marine fuel, renewable diesel, or LNG/LPG-related products, we coordinate the testing, inspection, and documentation steps that keep your transaction on track.

We work alongside and coordinate through recognized inspection and testing companies — including SGS, Intertek, Bureau Veritas, Cotecna, Saybolt, and other approved port-based laboratories — to ensure samples are correctly drawn, results are promptly returned, and all documents are in order before a cargo moves.

EN590 Diesel Jet A-1 Crude Oil Marine Fuel Renewable Diesel LNG / LPG

Buyers & Sellers

Independent quality verification
Dispute-ready documentation
Faster lab turnaround support

Refineries & Tank Farms

Pre-loading product checks
Tank access coordination
Inventory verification surveys

Shipping Companies

Ship-shore compatibility checks
Cargo sampling at load port
Post-discharge outturn surveys

Trading Companies

Spec confirmation before purchase
Chain-of-custody documentation
Multi-port coordination

Petroleum trading and quality assurance team

Laboratory analysis of petroleum product samples

Testing & Inspection Support

We coordinate quality and quantity inspections for petroleum products including EN590 diesel, Jet A-1, D6 fuel oil, crude oil, marine fuel, renewable diesel, petrochemicals, and LNG/LPG-related products.

Pre-loading quality checks
Cargo sampling and sealing
Discharge and outturn surveys
Out-of-spec identification and reporting

Dip Test Coordination

Accurate tank gauging and dip test facilitation is critical to every petroleum transfer. We coordinate dip test attendance, volume measurement support, and interface detection for blended cargoes.

Tank ullage and dip surveys
Opening and closing stock surveys
Water dip and interface checks
Volume reconciliation support

Laboratory & Certification Support

We coordinate sample dispatch and follow up on test results with recognized inspection agencies. Tzero Labs collaborates with SGS, Intertek, Bureau Veritas, Cotecna, Saybolt, and other approved port-based laboratories to ensure results are returned accurately and on time.

Sample dispatch and chain-of-custody
Expedited turnaround coordination
COA review and interpretation
Retained sample management

Documentation & Transaction Support

Petroleum transaction documentation review

Delayed or missing documents stall transactions and incur demurrage costs. We help assemble, verify, and track certificates of quality, quantity, and origin — so your paperwork is complete when it matters most.

Certificate of Quality (COQ)
Certificate of Quantity (COQ)
Bill of Lading alignment
Customs and regulatory packs

Tank Farm & Storage Support

Storage operators and tank farm managers rely on accurate stock management and inspection coordination. We support pre-loading inspections, tank entry facilitation, and inventory verification at onshore and offshore terminals.

Pre-loading and post-discharge surveys
Tank access coordination
Inventory reconciliation support
Safety checks during tank entry

Faster Testing Results

Urgent petroleum sample dispatch and tracking

Slow lab queues and delayed test results cost everyone time and money. Tzero Labs actively manages lab dispatch priorities, expedites urgent samples, and tracks test progress to get results back before the ship has sailed or the deadline has passed.

Priority sample dispatch
Real-time progress tracking
Urgent result escalation
Digital result and report delivery

Major Oil and Gas Port Support

Petroleum transactions happen under tight timelines at ports and terminals around the world. Tzero Labs provides coordination services that reduce delays in inspection, testing, sampling, and documentation at key oil and gas ports and loading terminals.

West Africa Rotterdam Houston Singapore Fujairah

Inspection Agencies We Work With

SGS
Intertek
Bureau Veritas
Cotecna
Saybolt
Approved port-based laboratories

Products Covered

EN590 Diesel
Jet A-1 Aviation Fuel
D6 Fuel Oil
Crude Oil
Marine Fuel (VLSFO, HSFO)
Renewable Diesel (HVO)
LNG / LPG and related products
Petrochemicals and refined products

Port & Terminal Services

Inspection attendance coordination
Sample collection and dispatch
Dip test and gauging facilitation

Documentation Delivered

Quality and quantity certificates
Lab reports and COA
Regulatory compliance packs

How we work

A clear, coordinated process from cargo scoping to document delivery — so nothing is left to chance and no one is left chasing paperwork.

Engagement & Scoping: Understand the cargo, product grade, port, and timeline requirements.
Inspection Coordination: Arrange inspection attendance, sampling, dip tests, and lab dispatch.
Testing & Results: Manage lab relationships to deliver quality results quickly and accurately.
Documentation: Assemble and verify all transaction documents before the cargo moves.
Handover & Support: Deliver the completed quality pack and remain available for post-transaction queries.

Petroleum logistics team coordinating cargo operations

Quality & Quantity Verification

Independent confirmation that product meets specification before transfer and payment.

Reduced Delays

Proactive management of lab queues, port access, and document workflows.

Transaction Security

Complete chain-of-custody documentation protecting all parties in the deal.

Faster Completion

Coordinated testing and documentation reduces time to transaction close.

Petroleum inspection and quality team reviewing documents

Our Commitment

The petroleum supply chain depends on trust. Every step — from the first dip test to the final certificate — carries the weight of a transaction, a reputation, and often millions of dollars in value. Tzero Labs is built around one core principle: every engagement we take on must be handled with precision, professionalism, and full transparency.

We do not cut corners, we do not overstate what we are, and we do not make claims we cannot back up. We are a professional petroleum quality coordination partner that helps buyers, sellers, refineries, and trading companies move their business forward — safely, efficiently, and with documentation they can stand behind.

"Quality that travels with the molecule."

What you can count on

Independent, unbiased quality coordination
Professional and transparent reporting
No false claims — only what the data supports
Prompt response to urgent inspection needs
Full HSE compliance in every field engagement
Documentation that holds up under scrutiny

Professional petroleum inspection team at work

Petroleum quality team reviewing inspection documentation

Frequently asked questions

If you have specific requirements — a particular product, port, or inspection timeline — we are happy to discuss what coordination support looks like for your situation.

We support a broad range of petroleum and refined products including EN590 diesel, Jet A-1 aviation fuel, D6 fuel oil, crude oil, marine fuel (VLSFO and HSFO), renewable diesel (HVO), petrochemicals, and LNG/LPG-related products. If your product is not on this list, contact us and we will advise on what is possible.

Tzero Labs works with and coordinates through recognized inspection and testing companies including SGS, Intertek, Bureau Veritas, Cotecna, Saybolt, and other approved port-based laboratories. We support inspection through these agencies and do not conduct independent laboratory testing.

We actively manage sample dispatch, follow up with labs on progress, escalate urgent requests, and track reports through to delivery. For time-sensitive cargoes, we prioritize turnaround coordination to ensure results reach you before operational deadlines.

Yes. We coordinate engagements at ports across West Africa, Europe, the Middle East, Southeast Asia, and other major oil and gas hubs. Contact us with your port and cargo details and we will outline what we can arrange.