Clients sometimes ask why MTIS does not own a full laboratory, as if it were an admission. It is the opposite: it is the design. Here is how investigation testing actually works when the investigator is free to choose any method — and what that freedom does for the quality of the answer.
The captive-lab problem
Every laboratory's commercial reality is that its machines must stay busy. When the investigator and the laboratory are the same business, test programmes drift toward what the house can run — not necessarily what the question needs. It is rarely dishonest; it is structural. The hammer-and-nail problem, at laboratory scale.
How MTIS runs it instead
MTIS maintains limited in-house practical capability — inspection, sample preparation, secure storage, microscopy and selected support tasks — and works with a network of specialist laboratory partners for everything else. The division of labour is deliberate:
- MTIS keeps the judgement. What to test, in what order, on which samples, checking which hypothesis — the programme is designed by the investigating engineer around the failure's specific questions. How hypotheses drive testing →
- Partners provide the methods. For each technique, the work goes to a specialist laboratory selected for that method and that material — with accreditation confirmed for the specific test where it matters.
- MTIS keeps the interpretation. Results return to the engineer who designed the programme, who reads them against the hypotheses and the physical evidence. You get an engineering answer, not a stack of certificates.
How the evidence chain survives the journey
The practical worry with external testing is custody: failure evidence must remain traceable. Samples are prepared and documented before dispatch — what was cut, from where, why — labelled against the evidence log, and transferred with records. Sectioning plans are decided investigation-first: nothing is cut until its position is photographed and its purpose defined, because you only get to section a fracture once.
What it means for cost and speed
You pay for the tests your investigation needs — not for a standard package sized to a laboratory's brochure. Sequential, hypothesis-driven testing frequently ends early: when the second test confirms what the first suggested and no competing hypothesis survives, the programme stops. A captive lab has no incentive to stop; an independent designer does.
When to contact MTIS
When a failure needs testing and you want the programme designed around the question; when results from another laboratory need independent interpretation; or when you want one accountable engineer standing behind the whole answer. The partner-lab model → · Characterisation & Testing Coordination → · Start a job request →