Diamond suspensions 0.25–20 μm

Ready-to-use suspensions in water and oil base. Concentration, dispersion system and fraction matched to your process. Batches from 5 litres.

Batches from 5 litres In stock · standard concentrations MSDS + concentration report Trial batch from 5 L

Pricing is on request, delivery basis FOB China, exclusive of VAT. Micron powder cost depends on grade, fraction and quantity — please confirm by email.

Certification & documents

Supplied with full documentation package: standard, particle size COA, safety data sheet, and specifications. EAC declaration is the importer responsibility — we provide full technical support.

ISO 13320:2020 / GOST 9206-80 / GB/T 35477-2017

Products are characterized per ISO 13320:2020 (laser diffraction, D50/D90) and conform to GOST 9206-80 and GB/T 35477-2017. Actual fraction values for each batch are confirmed by a particle-size report (COA).

EAC (TR CU / EAEU)

EAC compliance and declaration are the responsibility of the importer. DIAMTECH provides full technical documentation support: COA (particle size distribution, impurity analysis), MSDS, and product specifications to facilitate your EAC process.

Particle-size report (COA)

Every batch ships with the partner factory report, re-verified by DIAMTECH. Sample on the Certificates page.

Document copies are provided before shipment.

Quick match

Fraction Base Concentration Typical task
0.25–0.5 μmWater2–5%Optics & hard-alloy finish polishing
0.5–1 μmWater / oil2–10%Optics and substrate polishing
1–2 μmWater / oil2–10%Hard-alloy lapping
1–3 µmWater / oil5–15%Pre-polishing
3–7 µmWater / oil5–15%Grinding ceramics and glass
7–15 µmOil10–20%Roughing, stock removal

Concentration, viscosity and pH are matched to the process. Full catalog on request.

Supply formats

Illustration of typical packaging: cans and bottles 250 ml – 5 L, water- or oil-based carrier. Batch marking and datasheet as agreed.

Why a suspension, not a powder

Ready-to-use dosing

No mixing and no concentration control needed — the suspension is ready to work.

Stable dispersion

Proven dispersion system — particles do not agglomerate, stable results.

Fewer scratches

Strict control of coarse particles — low scratch count on the surface.

Convenient packaging

Bottles 50/100/500 ml, canisters 1/5/20 l. Packing to your specification available.

Applications

Optics

Polishing lenses, prisms, YAG laser crystals, optical components.

Hard alloys

Lapping and polishing tungsten carbide, ceramics, cutting inserts.

Sapphire and glass

Polishing sapphire substrates, watch glasses, screens.

Electronics

CMP polishing of semiconductor substrates, silicon, SiC.

FAQ

What is the shelf life of a suspension?

12 months from the production date when stored in a closed container. Shake before use.

Can I order a trial sample?

We do not ship samples — shipping a small parcel costs about as much as the sample itself. The first step is the minimum batch of 5 L in the required fraction, dispatched from the factory in 3–5 days.

What is the delivery time?

Dispatch from the factory takes 3–5 days. Transit time depends on the distance and the shipping method — confirmed per order. A custom concentration is produced to order; its dispatch time is confirmed on request.

Is there a quality report for the suspension?

Yes: fraction, concentration, pH, viscosity, particle count — batch QC report of every batch.

Suspension inquiry

Specify fraction, base and volume — we will match the concentration to your process.

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Frequently Asked Questions

Is DIAMTECH a factory or a trading company?

DIAMTECH is a diamond trading and sourcing company, not a factory. We work directly with the Henan cluster, selecting and comparing products across plants and matching the best partner plant for each batch.

How does a suspension differ from a paste?

A suspension is a liquid medium with suspended grains, ready to use, suited to finishing and polishing. A paste is denser and intended for longer stock removal. Ask us which fits your operation by surface finish and dilution requirements.

What is the minimum order quantity?

Standard micron powder from 1 kg, suspensions from 5 L. The minimum for a custom fraction is 10 kg. Send us your requirement by email and we will confirm the exact MOQ for your case.

How is pricing calculated, and what are the volume terms?

Prices are not published on this site. Cost depends on grade, particle fraction, quantity and delivery terms, and is confirmed by inquiry. Describe your requirement by email and we will send a quotation.

Which quality documents are available?

A COA is issued per batch on request. Test protocols from the Henan Provincial Quality Supervision & Inspection Center for Synthetic Diamond Micron Powder (Zhecheng) — China's only specialized state laboratory for micron powder — or from the National Center are available on request.

Are samples available?

Samples are available, but the sample fee and freight are paid by the buyer (collect); both are credited to the first order. DIAMTECH does not offer free samples.

What are the payment terms?

TT: 30% deposit, balance before shipment. An invoice is provided.

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