Oeko-Tex via Hohenstein, plus a monthly Eurofins panel

What chemical testing does PiHue perform, and where?

PiHue rugs are certified to Oeko-Tex Standard 100 through Hohenstein in Germany, and separately screened every month at Eurofins Product Testing India in Gurgaon against a Chem-ST restricted-substances panel covering AFIRM RSL limits, EU regulation (REACH Annex XVII, REACH SVHC, POP Regulation) and partial GOTS parameters. The two together cover essentially every restricted-substance question a buyer asks — and both are named third-party labs, not internal claims.

Oeko-Tex Standard 100 — Hohenstein, Germany

PiHue holds Oeko-Tex Standard 100 certification in the base class, tested and certified through Hohenstein in Germany. Most competitors who claim Oeko-Tex cannot say which institute performed testing; naming the institute matters because Oeko-Tex has authorised institutes in many jurisdictions and the certification's rigour is set by the institute's own laboratory practice.

Oeko-Tex Standard 100 tests every material in the rug — yarn, dye, latex, backing — against concentration limits for hundreds of regulated substances published in the standard's annually-updated criteria catalogue. The certification is renewed annually. Certificate details are shared during buyer onboarding rather than published, per our identifier publication rule.

What is the Chem-ST panel at Eurofins Gurgaon?

The Chem-ST panel is a monthly random restricted-substances screen run at Eurofins Product Testing India in Gurgaon, covering three rating frameworks at once: Chem-ST (AFIRM RSL limits), EU Regulation (REACH Annex XVII, REACH SVHC, POP Regulation) and partial GOTS parameters. It runs against thirty-one parameter groups and every recent report has come back with essentially all substances Not Detected. Overall rating: PASS on both Chem-ST and EU Regulation.

The most recent report tested dyed wool and non-dyed cotton flatweave across five colourways for destinations in the USA and Europe, with an eight-day turnaround.

Which standards does the Chem-ST panel test to?

The panel cites the following international standards, one per parameter group:

• Azo dyes and aromatic amines — ISO 14362-1:2017, ISO 14362-3:2017
• Alkylphenols and ethoxylates
• Bisphenols
• Chlorobenzenes and chlorotoluenes
• Chlorophenols — EN 17134-2:2023
• Chlorinated paraffins
• Dimethyl fumarate — ISO/TS 16186:2021
• Disperse dyes
• Formaldehyde — ISO 14184-1:2011, JIS L1041:2011 A
• Total and extractable metals
• Chromium VI — DIN EN 16711-2:2016
• Monomers
• Brominated and organophosphorus substances
• Organotins — CEN ISO/TS 16179:2012
• Total fluorine and total organic fluorine
• PFAS
• Phthalates — ISO 14389, CPSC-CH-C1001-09.4
• Polycyclic aromatic hydrocarbons (PAHs) — AfPS GS 2019:01
• Cyclosiloxanes D4, D5, D6
• Solvents and residuals — EN 17131:2019
• VOCs — headspace GC-MS
• Quinoline — DIN 54231:2022
• UV absorbers and stabilisers — ISO 24040:2022
• pH — ISO 3071:2020
• REACH SVHC — screened against 247 substances on the ECHA candidate list published 21 January 2025

Are the pH results publishable?

Yes — the most recent panel reported pH results of 5.69, 6.53, 6.02, 6.74 and 6.61 against a textile limit of 4.0 to 7.5 (ISO 3071:2020). All five colourways passed comfortably inside the band.

pH sits in the middle of the textile-safe range because our dye house holds the finish rinse at neutral. A skipped final rinse would push pH out of band; the monthly test would catch it before shipment. Publishing the numbers rather than the pass/fail is the difference between a claim and evidence.

Does PiHue offer GOTS certification?

No. The Chem-ST panel includes partial GOTS parameters, but the report states that the entire GOTS parameter set was not tested — PiHue is not GOTS-certified and does not claim GOTS certification on any programme. If a project requires GOTS specifically, we recommend the buyer specify a GOTS-certified supplier.

Can PiHue arrange California Prop 65 or a REACH SVHC statement?

California Proposition 65 clearance is available on request through Eurofins, chargeable to the project. REACH SVHC statements are supplied on request — the monthly panel already screens against the ECHA candidate list, so a statement for a specific shipment can be issued directly from that data with no additional test.

How often is chemical testing performed?

The Chem-ST panel runs monthly against a random sample from the production floor. This is a routine batch check, not a per-shipment test — do not read this as "every shipment is tested". A buyer whose project requires per-shipment chemical testing should say so at PO stage; we then arrange the additional per-shipment work through Eurofins alongside the routine monthly panel.

What documentation does the buyer receive?

Test reports are available to buyers on request. The Oeko-Tex Standard 100 certificate is shared during buyer onboarding; the most recent monthly Chem-ST report is available to any buyer whose account is open with us, with report numbers and sample identifiers redacted per our publication policy.