Publications

Browse PTI technical publications

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Find technical publications by the powder behavior, material property, process, or measurement you are working with. You can also browse the latest releases, choose an editorial format, or open the complete publication catalog.

Publications

Browse PTI technical publications

Find content by subject, editorial format, or publication date

Find technical publications by the powder behavior, material property, process, or measurement you are working with. You can also browse the latest releases, choose an editorial format, or open the complete publication catalog.

Latest publications Browse by Subject Feature Articles Technical Briefs Insights Know How All Publications
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The four newest PTI publications appear here automatically, regardless of subject or editorial format.

  • Technical hero image for a PowderTechnology.info Monthly Know-How on Hausner Ratio and Carr Index, showing two graduated cylinders with loose and tapped powder, three different powder mechanism backgrounds, the Hausner Ratio and Carr Index formulas, a workflow from result to next test, and a reference to an included practical interpretation guide.
    4 July 2026

    Hausner Ratio and Carr Index: What the Numbers Tell You and Where They Break Down

    Both the Hausner Ratio and Carr Index reduce bulk and tapped density to a single number. The mechanism behind that number, whether aeration, particle shape, or surface cohesion, determines whether it supports a process decision or actively misleads one.

    Know How

  • Technical illustration showing how compressibility, cohesion, wall friction and permeability affect powder filling and movement inside a screw feeder.
    4 July 2026

    Screw Feeder Dosing Accuracy and Powder Compressibility: Why the Same Screw Behaves Differently on Similar Products

    The same screw feeder at the same speed can deliver consistently on one powder and drift by several percent on another. The difference lies in compressibility, wall friction, and cohesion, and in how bulk density shifts as the hopper empties.

    Insights

  • Photorealistic view inside a pharmaceutical spray drying facility with a stainless steel spray dryer, cyclone separator, product collection lines, inline NIR sensor probes and process monitoring screens.
    4 July 2026

    Spray Drying 4.0: Real-Time PAT, AI Process Control, and What Engineers Actually Gain

    Process analytical technology combined with machine learning is changing residual moisture control and yield prediction in pharmaceutical and food spray drying. The gains are real but bounded, and the off-line test panel has not been replaced.

    Feature Article

  • Technical diagram showing Kst explosion index limitations — standardized 20-litre sphere test conditions compared with real industrial vessel geometry and turbulence
    29 June 2026

    Why Kst Is Not Enough: What the Explosion Index Tells You and What It Misses

    Kst quantifies explosion rate-of-pressure-rise under standardized lab conditions. It does not directly describe how an explosion behaves in your vessel, at your turbulence level, or with your ignition scenario. This insight explains what the number means, where the cubic law holds, and when a competent person must go further than the test certificate.

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Choose the powder behavior, material property, process, or measurement behind the question. Each subject opens the corresponding PTI publication category, bringing related technical publications together in one place. Industries are intentionally omitted because PTI already provides dedicated industry pages.

Flow & bulk behavior

FlowabilitySegregationDustinessCakingElectrostatic EffectsMoisture SensitivityShearCohesionPermeabilityPacking Density

Particle & surface behavior

AgglomerationAttritionAbrasionWearAdhesionSurface EnergyDispersionRheologyPorosityThermal PropertiesParticle Size Distribution

Processing & handling

Mixing TechnologyHoppersConveyingCompactionCoatingSilo StorageEncapsulation TechniquesSpray DryingMilling

Characterization & analysis

Bulk Solids CharacterizationParticle Size TestingAnalytical Techniques and MethodsChemical Composition AnalysisMicroscopy

Browse by format

Choose the depth and type of content

Feature Articles, Insights, and Know How are editorial formats within PTI publications. They are not separate technical destinations.

Feature Articles

Long-form technical analysis built around a defined engineering question, comparison, mechanism, process, or application.

Technical Briefs

Concise, practical explanations of focused powder and particle technology questions, mechanisms, measurement issues, and process challenges.

Insights

Focused interpretation of a study, method comparison, process result, standard, or emerging technical development.

Know How

Practical technical guides that go deeper into measurement, interpretation, equipment, and powder-behavior decisions.

Feature Articles

Long-form technical analysis

Recent Feature Articles examine a defined engineering question in greater depth, connecting mechanisms, measurements, process context, and interpretation where the subject requires it.

  • Technician testing incoming powder in a small hopper beside printed certificates of analysis in a lab.
    22 November 2025

    Powder Certificate of Analysis vs Reality: Why Incoming Tests Matter

    A powder certificate of analysis (CoA) confirms identity and basic properties, but [...]

    Feature Article

  • Powder wettability in food and feed shown by food powder dispersing in water
    15 November 2025

    Inside Perspective of Powder Wettability in the Food and Feed Industries

    Powder wettability in food and feed determines how fast powders sink, hydrate, [...]

    Feature Article

  • Flowing powder in a stainless vessel forming an S shape, illustrating the powder plateau S-phrase
    8 November 2025

    Powder Plateau S Curve: How to Win When Physics Limits You

    The powder plateau S-curve explains why progress is incremental and why expectations [...]

    Feature Article

  • Caked white powder with fresh granules pouring from a metal chute in a dark lab setting.
    1 November 2025

    Powder Caking Prevention: Causes, Testing Methods, and Proven Fixes

    Powder caking can be predicted and, in most cases, prevented. It follows [...]

    Feature Article

Technical Briefs

Concise answers to focused technical questions

Recent Technical Briefs provide concise, practical explanations of focused powder and particle technology questions, covering specific mechanisms, measurement issues, processing challenges, and interpretation problems.

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Insights

Focused technical interpretation

Recent Insights examine a study, method, process result, standard, or emerging technical development in a tighter editorial format.

  • Hopper bridging arch forming across the outlet of a conical powder hopper
    29 November 2025

    Hopper Bridging: Why One Hopper Always Bridges First

    Hopper bridging is rarely random. It points to a mismatch between powder [...]

    Insights

  • Operator checking a high humidity display near stacked powder bags, illustrating how humidity spikes powder flow in storage areas.
    22 November 2025

    When Humidity Spikes Hit Your Powder Flow

    Average conditions rarely tell the full story. Short humidity spikes can change [...]

    Insights

  • Industrial spray drying line with data overlay illustrating digital twins in powder processing.
    15 November 2025

    Digital Twins in Powder Processing: From Buzzword To Useful Tool

    Digital twins in powder processing only work when you give them one [...]

    Insights

  • Powder quality fingerprint lab setup with sieve stack, tap density cylinder, Faraday cup, microscope, and powder jar on a clean bench.
    8 November 2025

    Build a Powder Quality “Fingerprint” in 7 Days

    You can prevent most production surprises by tracking six simple powder markers. [...]

    Insights

Know How

Practical technical guidance

Recent Know How publications focus on practical measurement, method selection, interpretation, equipment, and technically useful working guidance.

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All Publications

The complete PTI publication catalog

Browse all published PTI content, newest first. Use the subject index above when you know the technical topic, or the structured PTI hubs when you want a guided route through a problem, property, measurement, process area, or industry.

  • AI-assisted material characterization: laser diffraction setup analyzes a powder stream with a camera and PSD histogram on a lab monitor.
    20 September 2025

    Material Characterization with AI-Assisted Analytics

    AI-assisted material characterization speeds testing, strengthens models, and improves inline control. Labs [...]

    Feature Article

  • Catalytic hot spots in powders shown by a lab setup with a Karl Fischer titrator, a weigh boat of powder, and a microbalance on a clean bench.
    20 September 2025

    Catalytic Hot Spots in Powders: Small Regions, Big Consequences

    Catalytic hot spots in powders often determine stability. Detect them early with [...]

    Insights

  • Close-up macro view showing moisture droplets condensing on fine powder particles, illustrating moisture risk in powder formulations.
    13 September 2025

    Moisture as a Formulation Risk: Beyond Standard Hygroscopicity Testing

    Moisture risk in powder formulations extends beyond mass uptake. Water reshapes surfaces, [...]

    Insights

  • Deep-sea particle dynamics for powder engineering: marine snow with diatom chains sinking.
    13 September 2025

    Deep-Sea Particle Dynamics, Through a Powder Lens

    vDeep-sea particle dynamics show powder engineering mechanics in powder dynamics. Deep trenches [...]

    Feature Article

  • Cobalt exposure limits powder manufacturing worker in PPE with respirator, dusted with cobalt powder.
    6 September 2025

    Cobalt Exposure Limits in Powder Manufacturing: Five Steps to EU Compliance

    Cobalt exposure limits in powder manufacturing are tightening. Plants must act now [...]

    Insights

  • Scientist applying slurry of lithium powders to foil electrode in lab, demonstrating lithium powders energy density research.
    6 September 2025

    Atomic Fundamentals and the Density–Energy Link

    Lithium’s atomic-scale behavior drives energy density in batteries. Powders are not passive [...]

    Feature Article

  • Ancient powder technologies illustrated by a Tang dynasty alchemist grinding early gunpowder ingredients.
    30 August 2025

    Ancient Powder Technologies: Metallurgy, Pigments, and Gunpowder Before Western Reinvention

    Ancient civilizations mastered powder processing long before modern science. What we call [...]

    Feature Article

  • Flat-style infographic illustrating powder waste in manufacturing with a hopper, weighing scale, and financial loss symbols.
    30 August 2025

    The Real Cost of Powder Waste in Manufacturing: How small waste adds up

    Even a fraction of powder waste in manufacturing erodes yield, raises costs, [...]

    Insights

  • Electrostatic troubleshooting powder handling with silo discharge, warning sign, and charge meter.
    29 August 2025

    Electrostatic Troubleshooting in Powder handling

    Electrostatic troubleshooting in powder handling addresses particle properties, environmental factors, and equipment [...]

    Know How

  • Hard carbon powder for sodium-ion battery use, shown in dry-room conditions with stable structure.
    23 August 2025

    Hard Carbon in Sodium-Ion Batteries: Moisture Control, Powder QA, and Line Readiness

    Hard carbon sodium-ion batteries are a match made in heaven. When moisture [...]

    Feature Article

  • Dustiness test setup: scientist uses a continuous drop rig with CPC and ELPI, rotating drum visible
    23 August 2025

    Dustiness Tests Compared: EN 15051 Versus EN 17199-4

    Use EN 15051 for mass-based dustiness in health-related fractions. The rotating drum [...]

    Insights

  • Sealed powder transfer line with hopper, rotary valve, HEPA filter and gauge, illustrating containment for REACH microplastics reporting.
    16 August 2025

    REACH microplastics reporting: EU restriction, polymer powders

    The EU’s microplastics rules, REACH microplastics reporting, bring labelling and annual reporting [...]

    Insights

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