Can a lab measure steel dust or wear metal in grease?
Yes, but our overseas service has a clear boundary
A lab can investigate steel dust and wear metals as part of in-service grease monitoring, but used grease counts as waste that we cannot receive from overseas. If your steel dust in grease analyser or checker query concerns material removed from operating equipment, use a local in-service lubricant-monitoring service. What we can consider after declaration review is unused new grease for formulation analysis and comparisons between fresh products.
A wear question starts with the equipment history
Used grease can acquire metal debris, environmental contamination and products of oxidation, while the supplied grease already has its own additive and thickener chemistry. Iron can be relevant to steel wear, with chromium or nickel relevant to some alloy sources, but those elements do not establish the worn component by themselves. Silicon can be relevant to mineral contamination, yet it can also belong to an intentional ingredient, so context is needed before calling it dirt ingress. The location of the sample, lubricant identity and comparison history matter because grease taken from different zones need not represent the same wear or contamination pattern.
A local monitoring provider can relate the selected measurements to the machine and its previous condition, rather than treating one unfamiliar grease sample as a complete diagnosis. Metal observations are investigation leads, not automatic proof of bearing failure or a unique explanation for equipment noise. This in-service question is different from asking whether two unopened supplied greases have similar ingredients.
Portable checks and laboratory analysis answer different questions
A portable checker may provide a selected field indicator, while laboratory analysis can investigate chosen chemical or particle-related questions under controlled preparation conditions. Neither description tells you exactly what is measured, so ask whether the output is elemental content, particle information or another indicator before comparing results. An instrument intended for one indicator does not automatically provide another, and a broad analyser label is not evidence of a particular analytical scope. For an overseas used-grease question, that method choice belongs with the local monitoring provider that can receive and assess the actual in-service specimen.
What ICP-MS does and does not report
ICP-MS can support elemental-content findings after suitable sample preparation; the result concerns elements represented by that preparation and measurement. It does not count particles, report their size distribution or provide a ferromagnetic particle index. An iron result cannot by itself tell you whether the iron was present as steel particles, an inorganic ingredient or another iron-containing material. Likewise, a metal-element pattern does not directly establish alloy grade, particle shape or the mechanism that produced a particle.
Particles can be unevenly distributed, and preparation may not recover every material equally, so sample representativeness is part of a defensible elemental interpretation. A smaller elemental signal is not automatically evidence that fewer particles are present, because particle composition and recovery can also differ. We keep this elemental question distinct from a claim that a grease is free of wear debris or meets a particle-cleanliness requirement.
Useful projects involving unused new grease
We can investigate supported formulation chemistry in new grease, including metal-containing thickener and additive contributions, with semi-quantitative estimates where supported. For example, a manufacturer who suspects unexpected metal or filler in a new delivery can ask how its elemental and ingredient pattern compares with an unused reference. The supported result can describe a compositional difference without proving that visible material is steel dust or deciding who introduced it.
A supplier-change study can instead compare two unused greases for thickener family, base-oil chemistry and accessible additive differences; see our new-grease formulation guide. Our paired-batch guide explains how reference and suspect identities stay separate within one comparison. These are industrial formulation projects, not an offer of a standalone wear-metal test from overseas.
Declare the fresh grease before planning shipment
Declare each unused grease with its SDS, actual semi-solid form and comparison purpose; formulations containing additives outside the existing chemical inventory are reviewed case by case after declaration. Do not send used grease, waste or scrap, and do not substitute lubricating oil or another non-water-based liquid oil for the declared new grease. The industrial-fluid guide gives the related fresh-product and receipt boundaries.
How to start
We review overseas industrial samples before acceptance. Use our industrial analysis page and sample-shipping guide to prepare your declaration. Our reports are research-grade analytical reports from a laboratory that is not accredited. They cannot be used for product registration or legal proceedings.
FAQ
Can you analyse grease removed from a working bearing?
We cannot receive used bearing grease from overseas because it counts as waste; arrange an in-service monitoring study with a local provider that can receive the specimen.
Does ICP-MS measure steel-particle size or count?
ICP-MS supports elemental-content analysis under suitable preparation conditions, not particle count, particle-size distribution or a ferromagnetic particle index.
Can new grease contain intentional metal ingredients?
New grease can contain metal-bearing thickeners, additives or mineral ingredients, so an elemental finding must be interpreted against its formulation before being called contamination.
What should a two-batch new-grease inquiry ask?
Ask whether unused reference and suspect greases differ in supported thickener, oil, additive and elemental patterns, with both samples clearly identified as part of a formulation comparison.