Knowledge

Formulation knowledge, written for practitioners

Practical, parameter-backed answers on emulsion stability, emulsifier selection and supplier qualification. New articles publish weekly.

How-to · Metalworking fluids 2026-09-14

How to reduce foam in semi-synthetic cutting fluids without losing emulsion stability

Why foam and stability share the same interfacial film, and a six-step rebalance at constant HLB.

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Q&A · Fibre & textile 2026-09-14

Why does my textile softener emulsion cream or separate?

Creaming versus breaking, a six-row diagnosis table, and nonionic packages for cationic softener systems.

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How-to · Oil-phase systems 2026-09-14

How to stabilise water-in-oil emulsions when adding polar components

Recalculating required HLB for a modified oil phase, rebuilding the low-HLB pair, and checking for phase inversion.

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Technical article · Metalworking fluids 2026-09-07

Hard water stability of metalworking fluid emulsions: causes and fixes

Why calcium and magnesium break emulsions, the nonionic options that resist them, and a hardness ladder test protocol.

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Q&A · Selection 2026-09-07

Span 80 vs Span 60: choosing sorbitan esters for oil-phase stability

HLB 4.3 liquid versus HLB 4.7 waxy solid — side-by-side specifications, oil-phase behaviour and selection guidance.

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How-to · Selection 2026-09-07

How to blend two emulsifiers to hit a target HLB: worked examples

The weighted-average method in six steps, three worked ratio calculations, and a reference HLB table.

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Q&A · Metalworking fluids 2026-08-24

Why does my metalworking fluid emulsion separate after dilution?

The four most common causes — HLB mismatch, hard water, electrolytes, mixing order — and how to fix each.

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Q&A · Metalworking fluids 2026-08-24

How to choose emulsifier HLB for oil-in-water metalworking fluids

The required-HLB concept and a practical blend-ladder method with worked calculations.

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How-to · Metalworking fluids 2026-08-24

How to run a parallel emulsifier comparison test in MWF concentrates

A six-step, single-variable lab protocol from baseline control to one-drum production trial.

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Q&A · Selection 2026-08-24

Span 80 vs Tween 80: which emulsifier for which system?

W/O vs O/W, side-by-side specifications, and why the pair blends so well.

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Q&A · Release agents 2026-08-24

Why do oil-based release agents turn hazy or separate in storage?

Trace water, polar additives, wax crystallisation — a diagnosis table and stabilisation routes.

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How-to · Fibre & textile 2026-08-24

How to fix uneven oil pickup in synthetic fibre spin finishes

A five-step troubleshooting protocol: emulsion fineness, wetting, bath drift, emulsifier rebalance.

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Q&A · Procurement 2026-08-24

How to qualify a second-source emulsifier supplier: what data to request

The document checklist (TDS, SDS, COA history), the lab protocol, and the commercial checkpoints.

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Coming next

Q&A

Why does my soluble oil concentrate gel or thicken in storage?

Coming soon

How-to

Tank-side emulsion failure troubleshooting checklist

Coming soon

Technical article

How to eliminate release agent residue on molded parts

Coming soon

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