Compare Materials & Grades
Two credible options, one decision. Comparisons are grouped by product category so you only read what applies to your process.
Polymer & Plastics
Coated vs Uncoated Calcium Carbonate
Coating is a surface treatment — most commonly stearic acid or a stearate — applied to CaCO₃ particles to make them hydrophobic and more compatible with non-polar polymer melts. Coated grades disperse more easily, reduce moisture pick-up during storage and…
GCC vs PCC — Ground vs Precipitated Calcium Carbonate
GCC (Ground Calcium Carbonate) is produced by mechanically grinding natural limestone, marble or chalk. PCC (Precipitated Calcium Carbonate) is synthesised by carbonating a calcium hydroxide slurry with CO₂ under controlled conditions. The two share the…
Black Masterbatch Selection — Carbon Black Type, Loading and the UV Question
Two numbers decide a black masterbatch: the carbon black particle size and the loading. Small-particle furnace blacks give jetness and the highest UV protection per kilogram, and they are what a PE100 pipe or a geomembrane needs. Large-particle blacks…
Bio-Based vs Biodegradable Masterbatch — Which Certificate Actually Applies
"Bio-based" and "biodegradable" answer two different questions and are certified by two different families of documents. Bio-based describes where the carbon came from and is evidenced by a bio-based carbon content result. Biodegradable or compostable…
White Masterbatch vs Direct Titanium Dioxide Addition
Whether to dose TiO₂ into the process as a pre-dispersed white masterbatch or as direct TiO₂ powder into the extruder / compounder.
Desiccant Masterbatch vs Resin Drying
Whether to remove moisture defects by drying the resin (dehumidified dryer) or by adding a desiccant masterbatch that chemically binds residual moisture in the melt.
Calcium Carbonate vs Talc
Which mineral filler to specify for cost reduction, stiffness, or dimensional performance in a polyolefin or PVC formulation.
Rutile vs Anatase TiO₂
Which TiO₂ crystal form to specify for a given end-use, weathering exposure and processing temperature.
Virgin vs Recycled Carrier in Masterbatch
Whether to accept a masterbatch built on a recycled polymer carrier or to require a virgin carrier, given cost, regulatory and quality constraints.
PP Masterbatch vs PE Masterbatch
Whether to specify a masterbatch on a PP carrier or a PE carrier for a given end-polymer, process and property target.
Color Masterbatch vs Pre-coloured Compound
Whether to buy colour as a masterbatch (dosed at the machine) or as a pre-coloured compound (ready-to-run pellets).
Additive Masterbatch vs Process Optimisation
Whether a recurring defect or performance gap should be solved by adding an additive masterbatch (slip, anti-block, anti-static, UV, processing aid, etc.) or by optimising the process (temperature profile, screw design, cooling, die geometry, drying).
Primary vs Secondary Antioxidants, and When Both
Whether to run a primary AO alone, a secondary AO alone, or a balanced primary + secondary system — and at what loading.
PET Toughener vs IV Modifier vs Process Fix
Whether PET brittleness or drop failure should be solved with a toughener, an IV modifier / chain extender, or a process/drying fix.
Impact Modifier vs Grade Change vs Filler Reduction
Whether to solve PP brittleness by adding an impact modifier, switching the base PP grade (homo → copo), or reducing filler loading.
ATH or Magnesium Hydroxide — Choosing a Halogen-Free Mineral Flame Retardant
Processing temperature decides. Aluminium trihydrate releases its water at around 200–220 °C, so it works in PVC, polyolefin cable compounds, EVA and thermoset composites processed below that. Magnesium hydroxide decomposes at around 300–330 °C, so it is…
Coated or Uncoated Talc for Plastics — Which One Your Line Actually Needs
Uncoated talc is the default and is the right buy for most dry-blended, well-mixed polypropylene compounds. A coated talc is worth paying for when you are fighting one of four specific problems: poor feeding and dusting at the hopper, high torque or…
Mineral Powder or Filler Masterbatch — Which Form Should You Actually Buy?
Buy neat mineral powder if you run a compounding line: a twin-screw extruder, gravimetric powder dosing, dust extraction and someone who owns the formulation. Buy a filler masterbatch if you feed an extruder or moulding machine directly: the mineral is…
Halogen-Free vs Halogenated Flame Retardants — Choosing on Evidence
Halogenated systems interrupt combustion chemically in the gas phase, which makes them extremely efficient: a brominated package with an antimony trioxide synergist reaches a UL 94 V-0 rating at loadings low enough to leave mechanical properties largely…
Impact Modifiers — Selection by Polymer
An impact modifier is a rubbery phase dispersed in a rigid polymer to stop brittle failure. There is no universal grade: polyolefins take POE or EPDM, rigid PVC takes acrylic core-shell, MBS or CPE, and PET takes polyester-specific systems.
UV Stabilizer Selection — HALS, Absorbers and the Difference That Matters
A UV absorber and a hindered amine light stabilizer do different jobs. The absorber intercepts UV photons before they reach the polymer backbone and works best in thicker sections where there is enough path length to absorb in. HALS does not absorb UV at…
Antioxidants — Primary, Secondary and Why You Need Both
Polymer degradation during processing is a radical chain reaction, and it takes two different molecules to stop it. A primary antioxidant — usually a hindered phenolic — donates hydrogen to terminate radicals and protects the polymer in service over long…
Compatibilizers for PP, PE and Recycled Blends
A compatibilizer is an additive that bonds two immiscible polymers, or a polymer and a filler, at their interface — most often a maleic anhydride grafted polyolefin, dosed at 1–5%.
Lubricants and Processing Aids — Internal, External and Fluoropolymer
Internal and external lubricants solve opposite problems and are routinely confused. An internal lubricant is compatible with the polymer, lowers melt viscosity and internal friction, and reduces torque and frictional heat — it changes how the melt flows.…
Purging Compound Selection — Mechanical, Chemical and Abrasive Grades
Choose the purge by the contamination you are removing, not by the machine. Mechanical purges rely on high viscosity and shear to push melt out — they are the safest choice for routine colour changes on injection moulding and are the only sensible option…
Calcium-Zinc vs Lead vs Tin Stabilizers: Selection for Rigid and Flexible PVC
There is no universally best PVC stabilizer chemistry. Calcium-zinc, tin, and lead stabilizers were each developed to solve a different combination of thermal, optical, mechanical, cost, and regulatory constraints, and they continue to co-exist in industry…
Rutile vs Anatase Titanium Dioxide: Which Crystal Form Is More Appropriate for Your White Masterbatch, Color Masterbatch, or Plastic Masterbatch Application?
Which crystal form of Titanium Dioxide — Rutile or Anatase — is more appropriate for this White Masterbatch, Color Masterbatch, or Plastic Masterbatch application, and why?
White Masterbatch vs Desiccant Masterbatch: Which One Do You Actually Need?
White Masterbatch and Desiccant Masterbatch are both concentrated polyolefin-carried masterbatches, and they end up next to each other in the catalog for supply-chain reasons — same carriers, same processing equipment, same suppliers. That is where the…
Polymer QC Standards & Test Method Matrix
Search the ASTM and ISO methods used to qualify masterbatch, fillers and compounds — ash content, MFI, dispersion, moisture, tensile and colour — with practical limits.
Industrial Chemicals
Industrial Oxidizers Comparison — Peroxide vs Hypochlorite vs Permanganate
The four bulk oxidizers are not interchangeable, and the deciding factor is usually the by-product, not the oxidising power. Hydrogen peroxide leaves only water and oxygen, which makes it the right tool wherever residue, chloride or disinfection…
Citric Acid Anhydrous vs Monohydrate — How to Specify and Buy Industrial Citric Acid in Canada
Buy citric acid anhydrous when the finished product is dry — powdered drink mixes, effervescent tablets, dry cleaning powders, seasoning blends — because it carries no water of crystallisation and will not cake or trigger premature reaction in the blend.…
Industrial Alkali Selection & Form Comparison — Families, Forms and Basis | Allzone
A decision framework for industrial alkalis: how the common families differ in alkaline strength behaviour, solubility, delivered form, declared basis, storage implication and procurement comparison — without prescribing any process operation.
Food Ingredients
Choosing Food Grade Acidulants — Which Acid for Which Product
An acidulant lowers pH and adds sourness. This page helps you decide which acid to specify for a given product, using three inputs you already control: the pH target your process needs, the flavour profile the product can accept, and the dosing form your…
Food Preservative Selection — pH, Water Activity and Spoilage Target
Choose a preservation approach from the two hurdles that decide it: product pH and water activity, then the spoilage organism you are actually fighting. Decision structure, watch-outs and what must still be validated.
Food Preservative Selector — pH, Water Activity and Spoilage Target
Enter product type, pH band, water activity band and the spoilage you are fighting. The selector narrows the preservative families worth evaluating and states the watch-outs and what you must still validate.
Hydrocolloid Selection — Function, pH, Ions and Process
Choose a gum by the job it has to do — thicken, suspend, stabilise, gel or bind water — and by whether it survives your pH, your ions and your process. Includes synergy pairs and the failure modes behind each choice.
Feed Ingredients
Feed Binder Selection — Pellet Durability, Fines and Mash Forming | Allzone
How feed binder families differ by binding mechanism, moisture and heat dependence, and handling — so you can shortlist candidates against the failure you actually have: fines, soft pellets, crumbling or a mash that will not form.
Feed Amino Acid Forms — DL-Methionine, HMTBa, MHA-Ca and Protected Forms | Allzone
How the supply forms of the same feed amino acid differ in physical state, declared assay basis, dosing equipment and storage — a handling and documentation comparison, not a bioefficacy or dose comparison.
Water Treatment
Antiscalants and Phosphonates — Choosing the Right Threshold Inhibitor
Antiscalants work at sub-stoichiometric dose: 2–10 mg/L holds hundreds of mg/L of scale-forming ions in solution by distorting crystal growth. The selection driver is which scale you are fighting and whether the system carries chlorine. HEDP gives strong…
Water Treatment Coagulant Selection Guide — Alum, PAC, Ferric and Polymer
Coagulant choice is decided by raw water alkalinity, temperature and the sludge you are willing to handle — not by price per tonne. Aluminium sulphate (alum) is the cheapest per kilogram but consumes about 0.5 mg/L of alkalinity as CaCO₃ for every 1 mg/L…
Industrial Chlorination and Disinfection — Dose, Contact Time and Residual
Disinfection is not a dose, it is a CT product: concentration of free residual multiplied by contact time. A plant achieving 0.5 mg/L free chlorine for 40 minutes delivers the same CT as 1.0 mg/L for 20 minutes, and both fail if short circuiting in the…
Oxidising vs Non-Oxidising Biocides — When Each One Wins
Oxidising biocides kill fast, cheaply and indiscriminately; non-oxidising biocides penetrate biofilm and survive conditions that destroy an oxidant. A working cooling programme uses both: a continuous or shock oxidant to hold the bulk water, plus a…
Filter and Adsorbent Media Selection by Target Contaminant
Match a treatment objective to the media family that can actually address it — depth filtration, adsorption, ion exchange or oxidation-filtration — with the selection factors, watch-outs and the verification each one requires before specification.
Personal Care & Home Care
Cosmetic Grade vs Technical Grade: What Actually Differs and How to Verify It
"Grade" is a commercial description, not a legal classification. The same chemical sold as cosmetic grade and as technical grade may share an assay figure and differ entirely in impurity profile, heavy metal limits, microbiological control, odour and…
Choosing a Rheology Modifier: Carbomer, Cellulose, Gums or Electrolyte
Five questions decide it: is the product a surfactant system or an emulsion; must it be crystal clear; how much electrolyte does it contain; what pH will it sit at; and what sensory behaviour do you want on skin or hair. Carbomers give clarity and a crisp,…
Cosmetic Preservative Selection — pH Window, Water Phase and Packaging
How cosmetic preservative systems are chosen: which weak acids still work at your pH, why packaging changes the requirement, what a chelant does and does not do, and what challenge testing has to confirm.
Preservative System Selector — pH, Product Type and Claim Constraint
Interactive selector for cosmetic preservation: enter product type, water-phase pH, packaging and claim constraint to see which preservative systems are still inside their published pH window and what each one requires from the rest of the formula.
Surfactant System Selection — Sulfate-Free, Foam and Viscosity Route
How a rinse-off cleansing system is structured: which classes are sulfates by chemistry, what a sulfate-free specification actually removes, where viscosity comes from in each structure, and what each class constrains in pH, format and documentation.
Hair Conditioning Ingredient Selection — Substantivity and Deposition
How conditioning agents are chosen: which are cationic and therefore substantive, which survive an anionic cleansing base, which build a rinse-off conditioner body, and which are additives rather than conditioning agents at all.
Moulding, Casting & Artificial Stone
Precast Concrete Form Release Agents: How to Choose the Right Type for Your Moulds
Choose the release agent from the mould material first, the required surface finish second, and the site's health and environmental constraints third. Reactive (chemically active) release agents are the general default for steel and other non-porous…
Silicone vs Polyurethane Mould Rubber — and the Right Release | Allzone
Choose a tooling rubber family and a compatible release approach from what you cast, how many pulls you need and how the mould is built. Silicone, polyurethane and latex compared honestly.