Acoustic360 · Guitar Strings
Cleartone Acoustic Guitar Strings
Lower PFAS concern, acoustic guitar strings are traditional metal products with no known Teflon-family coating coatings or water repellency treatments.
Acoustic guitar strings (steel, bronze, or phosphor-bronze) are standard metal wound products with no historical association with PFAS use. The brand makes no PFAS claims and public data on this product line does not suggest Teflon-family coating coatings or stain/water treatments typical of PFAS-containing products.
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Steel or nickel-silver wound strings, bronze or phosphor bronze wrap
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Cleartone acoustic guitar strings are wound with bronze or phosphor bronze wrap around a steel or nickel-silver core, both standard materials in string manufacturing for over a century. These metals are inert under normal playing conditions and do not leach significantly into skin or the oral cavity during typical use. The wrap alloys are chosen for acoustic tonal properties, not chemical treatments, so there is no Teflon-family coating or antimicrobial finish that would introduce synthetic hazard classes. String degradation occurs mechanically through wear and corrosion, not chemical breakdown into toxic byproducts.
The brand's record and disclosure
Acoustic360 and the Cleartone brand have no established public safety recalls, consumer warnings, or third-party testing disclosures on record. The brand does not appear to publish detailed material sourcing, manufacturing, or chemical testing documentation on their website or in available product literature. No certifications (ISO, EU compliance, or independent lab verification) are widely advertised for this product line. Silence on PFAS and other chemical policies is typical across the guitar string industry, which has not faced regulatory pressure or widespread consumer demands for transparency.
How it compares in its category
Acoustic guitar strings across all brands (D'Addario, Elixir, Martin, GHS) use similar core and wrap materials; Cleartone occupies the mainstream market position with no known material innovation or cost-cutting shortcuts. Elixir strings include a polyweb or nanoweb coating for longevity, which introduces minimal additional hazard risk but has generated no safety complaints. Cleartone's uncoated design is typical of traditional bronze-wound strings and offers no safety advantage or disadvantage compared to direct competitors. Price and tone preference, not safety, are the primary differentiators in this category.
If you buy it
Wash hands after playing if you have sensitive skin or metal sensitivities, as nickel-silver contact dermatitis is rare but possible in susceptible individuals. Replace strings when they sound dull, feel rough, or show visible corrosion or breakage; typical lifespan is 1-3 months depending on play frequency. Do not heat strings or expose them to prolonged moisture storage in sealed containers, which accelerates corrosion and can increase microscopic metal shedding. Standard guitar maintenance (cleaning the fretboard and strings after play) is sufficient; no special storage or handling precautions are needed for health and safety.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Nickel contact sensitization
Nickel-silver wrap may cause localized contact dermatitis in individuals with established nickel allergy; this is a known but uncommon reaction to string contact and is not specific to Cleartone.
Metal corrosion and microscopic particle shedding
Oxidation of bronze or phosphor bronze wrap over time produces microscopic metal particles that settle on skin and clothing; this is normal wear, not a chemical hazard, but may worsen in high-humidity or high-sweat environments.
Lead or cadmium in wrap alloys
Modern bronze and phosphor bronze alloys meet international purity standards and do not contain intentional lead or cadmium; no testing data is publicly available for Cleartone specifically, but no recalls or complaints suggest contamination.
Coating degradation into oral/skin exposure
Cleartone strings are not treated with synthetic coatings or finishes known to release hazardous compounds; uncoated bronze-wound strings present no finish-degradation hazard.
Formaldehyde or volatile organic compound emissions
Metal strings do not emit VOCs or formaldehyde; this hazard class is irrelevant to the product category.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 78% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Guitar Strings
Martin
Retro Acoustic Guitar Strings
Phosphor bronze, stainless steel, nylon wound
Lower concern, acoustic guitar strings typically use established metals and nylon without water-repellent coating or nonstick coatings.
✓Bare metal or glass, no coating at all
Acoustic360
Ernie Ball Everlast Acoustic Guitar Strings
Phosphor bronze/stainless steel wound on steel core
Lower PFAS concern, acoustic guitar strings use standard metal materials with no known fluorochemical treatments.
✓Bare metal or glass, no coating at all
Dean Markley
Electric Guitar Strings
Steel alloy strings (nickel-plated or stainless steel core)
Lower PFAS concern, steel strings lack typical PFAS applications, but no brand disclosure exists.
✓Bare metal or glass, no coating at all
More guitar strings grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.