ASTM cleaning test methods are standardized procedures for measuring how well a cleaner removes a defined soil from a defined surface. There is no single "ASTM cleaning test." The right one depends on what you make: a bathroom cleaner, a floor product, a paint-washability claim, a cleanroom wipe or a validation protocol for medical devices. This guide sorts the main standards by use, explains how controlled cleaning tests work, and shows how a brand owner should choose before paying for a lab study.
We are a contract chemical manufacturer, so we see the other side of these tests: the formula that has to pass them. Here is what we tell new clients.
TL;DR
- ASTM cleaning methods measure removal of a specific soil from a specific surface under controlled conditions. Pick the method that matches your product category, not the one with the most famous number.
- For hard-surface cleaners, start with ASTM D4488 (a guide to soiling, cleaning and evaluating) and D5343 (ceramic tile and soap scum). For coatings, look at D4828 and D3450. For equipment and pharma residues, G121 and G122.
- Results are mostly for relative comparison against a control, not absolute claims. Test your formula next to a benchmark.
- Standards are revised often. Check the current edition on ASTM's page before you write a protocol or a claim.
- Tell your manufacturer the test method early. A formula built to pass a known protocol is cheaper than one reworked after a failure.
Table of Contents
- What ASTM cleaning tests actually measure
- Methods for hard-surface and household cleaners
- Methods for coatings, finishes and washable surfaces
- Methods for equipment, pharma and cleanrooms
- How to choose the right method
- A worked example: planning tests for a new floor cleaner
- Our perspective: test the formula, not the brochure
- Build a formula that is ready for testing
- FAQ
- Sources
What ASTM cleaning tests actually measure
Every method in this family answers the same question in a different setting: how much soil came off, and how repeatably can you show it?
The common structure looks like this:
- Apply a defined soil to a test coupon, tile, panel or device in a controlled amount.
- Run a defined cleaning step with set temperature, contact time and agitation.
- Measure what is left, by weighing, by analytical techniques or by reflectance and visual rating.
ASTM G122 puts numbers on this. It covers evaluating the effectiveness of cleaning agents and their capability to remove contaminants to a desired level, often expressed as a Cleaning Effectiveness Factor. The CEF is a quantitative measure of the fraction of contaminant remaining on or removed from test coupons after a controlled cleaning process.
The same source notes that ASTM G121 describes preparing contaminated coupons with controlled amounts of residue so that cleaning agents can be compared repeatably. Without that preparation step, two labs would never agree.
Cleaning performance vs. cleanability
These two terms get mixed up, and the difference matters for what you are testing.
- Cleaning performance is about the cleaner: does your formula remove the soil?
- Cleanability is about the surface or product: how easy is it to clean? ASTM E3106 defines it as the relative ease or difficulty of cleaning a product, and modern cleanability studies rely on bench-scale testing rather than on solubility or viscosity alone.
If you are launching a cleaner, you care about the first. If you sell coatings, finishes or equipment, you care about the second. Many brands need both.
Methods for hard-surface and household cleaners
This is where most of our clients, from startups to established private-label brands, land.
ASTM D4488: the general framework
D4488 is a guide for testing cleaning performance of products on resilient flooring and washable walls. It describes techniques for soiling, cleaning and evaluating performance of detergent systems under controlled but practical hard-surface conditions. Think of it as the toolbox. It tells you how to build a soil, apply it, scrub it and judge the result, so you can adapt it to the surface you care about.
ASTM D5343: bathroom soils and soap scum
ASTM D5343 is a guide for evaluating ceramic tile cleaners on typical bathroom soils, known in the industry as soap scum. Its own committee language is worth heeding: Subcommittee D12.16 indicates the results are diagnostic screening values for relative comparisons, not absolute values. Interlaboratory work requires exact treatment conditions and comparison to controls.
In plain terms: a D5343 score of 80 does not mean "removes 80% of soap scum" on a label. It means your formula beat or lost to the control under those conditions.
Search results for bathroom cleaner testing also show D5343 discussed alongside the HCPA DCC-16 protocol, which is an industry association method rather than an ASTM standard. If your retail buyer asks for a specific one, ask which before you commission anything.
Which one should a bathroom cleaner use?
| Situation | Likely starting point |
|---|---|
| Bathroom tile cleaner, soap scum claim | D5343, with a control product |
| All-purpose cleaner on floors or walls | D4488 framework, with soil chosen for your use case |
| Retail buyer requests a named protocol | The protocol the buyer names, confirmed in writing |
| Internal screening of several formulas | D5343 or D4488 style bench tests, relative ranking |
Methods for coatings, finishes and washable surfaces
If your product is a paint-like or protective finish, the question flips: how well does the surface resist soil and survive cleaning?
- ASTM D4828 (current edition D4828-26) evaluates the relative ease of removing common soil and stains from interior coatings by manual or mechanical washing with a sponge and a liquid or powder cleanser.
- ASTM D3450 (D3450-15, reapproved 2020) measures the relative ease and completeness of removing soilant discolorations from dried interior coating films through scrubbing.
Search results also show an ASTM method for the cleanability of surface finishes, built to guide users in choosing a finish or material that resists soiling in a particular application. That is the right family if you are comparing finishes, not cleaners.
For protective and anti-soiling products, these tests matter on both sides. A hydrophilic or anti-soiling coating is judged by how easily soil releases afterward. Our anti-soiling hydrophilic coating base is a private-label starting point for brands working in that space.
Methods for equipment, pharma and cleanrooms
These are specialist territory. If you sell into regulated industries, you will meet them.
ASTM G121 and G122: coupons and cleaning effectiveness
As above, G121 prepares contaminated coupons and G122 evaluates effectiveness. G122 is often applied to residues such as drug residues on manufacturing equipment or contaminants on medical devices. The workflow is familiar: contaminate the coupon, clean it under controlled parameters, then measure what remains.
ASTM E2090: cleanroom wipes
E2090 tests the particulate cleanliness of wipers used in cleanrooms. It measures the quantity and size distribution of particles and fibers released from a wiper subjected to moderate mechanical stress in a cleaning solution. It evaluates the wipe, not the cleaning chemistry, but your solvent or detergent may be the liquid in the test, so ask who specifies it.
Reusable medical devices: F3208, F3293 and F3321
Three guides work as a chain for cleaning validation:
- ASTM F3208 covers selecting clinically relevant test soils, such as simulated blood or mucus.
- ASTM F3293 describes application techniques, including pipetting, spraying and immersion, for applying those simulated soils.
- ASTM F3321 provides methods and considerations for extracting the simulated-use soil to measure what is left after cleaning.
If you are a cleaning-chemistry brand, this is not a casual claim to chase. Medical device cleaning validation sits with the device maker and healthcare regulators. Your job is to supply a well-documented, consistent formula.
How to choose the right method
Use these criteria in order.
- Name the claim. "Removes soap scum," "safe on leather," "washable finish" and "low particle release" each point to a different test.
- Match the substrate. Ceramic tile, vinyl flooring, painted drywall, stainless coupons and plastics are not interchangeable.
- Match the soil. A standard soil recipe is useful because it is repeatable. If your real-world soil differs, test both.
- Choose a control. Because results are relative, a benchmark product or a placebo formula is part of the method, not an extra.
- Check the edition. Editions are revised and some are withdrawn or reapproved. The examples above range from 2018 to 2026 editions. Open the ASTM page for the standard and confirm the current version before you cite it.
- Decide who runs it. A bench screen can happen in development. A claim that goes on a label or a buyer's spec sheet should be run by a qualified lab following the written method.
The point about starting early is not limited to pharma. Experts at Pharmaceutical Online say bench-scale testing early in cleaning process development helps identify the hardest-to-clean products and select appropriate cleaning agents. The same logic applies to the equipment itself: the surfaces your product runs through, and how they are prepared and finished, shape how hard cleaning will be, which is why pharmaceutical equipment powder coating and its surface preparation are worth understanding when you specify cleanable equipment.
A worked example: planning tests for a new floor cleaner
Say a startup wants a private-label neutral floor cleaner for commercial buyers. Here is how we would walk the plan.
- Claim: removes everyday foot-traffic soil without leaving residue.
- Framework: D4488 style testing on the flooring type the buyer uses.
- Starting formula: a neutral pH base such as our neutral pH floor cleaner, adapted by our chemists to the buyer's fragrance, dilution and cost target.
- Control: the buyer's current product.
- Stability: before any claim goes live, the formula needs a stability protocol. We lay out one in our guide to a shelf life protocol for cleaners.
This order saves money. You learn early whether the formula ranks against the control, then spend on formal testing only for the version you intend to sell.
Our perspective: test the formula, not the brochure
We have watched too many cleaning products launch on a claim that no one checked against a control. That is the stagnation we are tired of. Standards like D5343 and D4488 exist because "it works great" is not evidence.
Here is how we think brand owners should use ASTM methods:
- Treat the standard as a conversation starter with your chemist. Tell us the method up front. Real in-house R&D chemists can adapt one of our 1,200-plus formulas or build a new one toward a known protocol.
- Respect what the numbers mean. Relative scores are for ranking and improving. Do not turn a screening value into a promise on a label.
- Keep compliance ownership clear. We wrote about who owns cleaning compliance in GMP for cleaning manufacturers, and the same clarity applies to test responsibility: who runs it, who signs it, who keeps the records.
- Test the whole product. A formula that cleans well but fails on preservation or stability is not a product. See how we match cleaners to preservatives in our preservative selection guide.
Pride in what ships out the door starts with knowing what you measured and how.
— Faisal Mansur
Build a formula that is ready for testing
If you have a test method in mind, bring it to us. SaraWest is a contract chemical manufacturer with fully integrated US production, a proprietary library of over 1,200 formulas across eight industries, and in-house chemists you reach directly, with no broker in between. Orders can start at pilot scale and grow to full truckloads.
You can start from a ready-to-brand base through our private label cleaning products program, or have a formula developed to your specification through contract chemical manufacturing. Tell us what you want made and which test it has to pass. We'll handle the rest.
FAQ
What is the most common ASTM test for cleaning products?
For hard-surface cleaners, ASTM D4488 is the general guide for soiling, cleaning and evaluating performance, and D5343 is the widely discussed method for bathroom soap scum on ceramic tile. Which one is "most common" depends on your product category. Match the method to your claim and surface.
Can I print ASTM test results on my label?
Be careful. ASTM's own committee describes D5343 results as screening values for relative comparison, not absolute values. Any claim should reflect what the test showed against a control, and you should have it reviewed by your testing lab and, where relevant, a regulatory or legal professional.
Does ASTM certify a cleaning product?
No. ASTM publishes standard methods and guides. A product is tested against them by a lab, and the result belongs to that test, not to a certificate from ASTM.
How do I know I am using the current edition?
Open the standard's page on ASTM's site and check the edition designation, such as D4828-26 or D3450-15 (2020). Editions are revised, reapproved or withdrawn, so confirm before you write a protocol or a spec.
Do ASTM cleaning tests cover medical device cleaning?
Yes, through separate guides: F3208 for test soils, F3293 for applying them and F3321 for extracting them. These are validation tools for device makers and healthcare settings, so involve the people who own that validation.
Sources
- ASTM G122: Evaluating the Effectiveness of Cleaning Agents
- ASTM Standards For Cleanability Testing Of Pharmaceuticals And Medical Devices
- ASTM D5343 Guide for Evaluating Cleaning Performance of Ceramic Tile Cleaners
- ASTM D4828 Practical Washability of Organic Coatings
- ASTM D3450 Washability Properties of Interior Architectural Coatings
- ASTM E2090 Size-Differentiated Counting of Particles and Fibers Released from Cleanroom Wipers
- ASTM F3208 Guide for Selecting Test Soils
- ASTM F3293 Guide for Application of Test Soils
- ASTM F3321 Guide for Methods of Extraction of Test Soils
- Cleaning Process Development: Selection of Cleaning Agents
- Pharmaceutical equipment powder coating