Certifications: Oeko Tex

28 07 2011

I have an apology to make:  I made a statement last week that turns out to be incorrect, based on experience from years ago.  I said

“it’s not unusual to find a GOTS certification logo on a product – because it’s hard to get, and those who have it certainly want to display the logo.  But the certification may apply only to the organic fibers – the logo itself is not specific as to what is being certified.”

Laurie Lemmlie-Leung, of Sapphire International, Ltd, which is a GOTS certified terry mill, pointed out that in their experience,  “If we do not have an approved “GOTS Product Specification Plan” and transaction certificates showing that all the inputs are also GOTS certified, then we cannot use the GOTS label on the product.”  And that is indeed the case:  a GOTS logo on any product means that all processing up to the final product is GOTS certified.  So if GOTS certified cotton yarn is being sold, it can display the logo.  However, if that yarn is used to weave a fabric in a non-certified facility, the final fabric cannot display the logo.

So when you see a GOTS logo on a product, you can rest assured that the entire supply chain has been certified.

Now, back to discussion of certifications:  Before giving a summary of the main points of each of the certifications which deal with fiber processing (i.e., weaving), it’s important to remember that most of these certification programs are in business – so it costs money to achieve the certification – sometimes it costs a LOT of money.  In addition there is the burden of documentation, which increases administrative costs for the manufacturer.

Cradle to Cradle and GreenGuard can cost quite a bit, so when you look on the web sites to find which products have these certifications,  you see mostly large, well established companies which can afford to absorb the certification costs.  On the GreenGuard website, for example, it lists 1943 individual products, but all 1943 products are manufactured by only 20 large, well-known companies.  Sometimes smaller manufacturers decide not to pay the costs of certification, even though they may be doing everything “by the book”, because they’re operating on a shoestring.  Unfortunately, the many unethical claims make third party certification a requirement.

In addition to certifications, there are many new “green guides” on the internet which purport to list green products.  Some are valiantly trying to make order out of chaos, while others are simply adding to the confusion.  Of these, a basic listing may (or may not) be free, but any additional bells and whistles costs money.  So green products may be specially featured or identified (sometimes as “best”) because the manufacturer has paid for the spotlight.  The same is true of television shows which purport to cover new green products.  We have been approached several times by television programs featuring a well-known personality who would wax eloquently about our fabrics – if only we were to pay the right price.

What does this all mean?  Do your own homework!  Most of these “experts” have no more knowledge than you do.  And again, certifications provide a reliable yardstick to determine quality standards.

The third party certifications which cover textile processing and/or final products which you’ll see most often include:

  • Oeko Tex
  • GreenGuard
  • Cradle 2 Cradle by MBDC
  • Global Organic Textile Standard
  • Global Recycle Standard
  • SMART Sustainable Textile Standard

These are the certifications you’re most likely to run into, and they are very different.  So different, in fact, that we’ll take a few weeks to explore what each one tells us.

This week, we’ll start with one of the oldest certifications:  Oeko Tex.

Oeko Tex is an independent, third party certifier that offers two certifications for textiles:

  1. Oeko-Tex 100 (for products)
  2. Oeko-Tex 1000 (for production sites/factories).

Products satisfying the criteria for Oeko-Tex 100 which are produced in an Oeko-Tex 1000 certified facility may use the Oeko-Tex 100Plus mark, which is simply a combination of the two.

Oeko Tex was founded in 1992, by the Austrian Textile Research Intitute (OTI) and the German Research Institute Hohenstein,  to provide an objective and reliable product label for consumers.  Its aim is to ensure that products posed no risk to health.

Oeko Tex Standard 100

The Oeko-Tex Standard 100 standard is concerned primarily with health and safety of textile products – it tests only the end product.  The processing is not addressed – for example, wastewater treatment is not included.   It is NOT an organic certification and products bearing this mark are not necessarily made from organically grown fibers. (Note:  When you see the logo, make sure that the test number is quoted (No. 11-20489 in the image above)  and the test institute is named (Shirley is the institute which tested the product).)

Textiles considered for this standard are classified into four categories, and each category has different test values for chemicals allowed in the product:

  • Product Class I: Products for Babies – all textile products and materials used to manufacture such textile products for children up to the age of 36 months (leather clothing is excepted)
  • Product Class II: Products with Direct Contact to Skin – worn articles of which a large surface touches the skin (i.e. underwear, shirts, pants)
  • Product Class III: Products without Direct Contact to Skin – articles of which only a small part of their surface touches the skin (i.e. linings, stuffings)

Textile products bearing the Oeko-Tex 100 certification mark:

  • Do not contain allergenic dye-stuffs and dye stuffs that form carcinogenic arylamines.
  • Have been tested for pesticides and chlorinated phenoles.
  • Have been tested for the release of heavy metals under artificial perspiration conditions.
  • Formaldehyde is banned; other aldehyde limits are significantly lower than the required legal limits.
  • Have a skin friendly pH.
  • Are free from chloro-organic carriers.
  • Are free from biologically active finishes.

The certification process includes thorough testing for a lengthy list of chemicals, including lead, antimony, arsenic, phthalates, pesticides, and chlorinated phenols. The official table of limits for tested chemicals may be found on the Oeko-Tex website.  Specifically banned are:

  • AZO dyes
  • Carcinogenic and allergy-inducing dyes
  • Pesticides
  • Chlorinated phenols
  • Chloro-organic benzenes and toluenes
  • Extractable heavy metals
  • Phthalates in baby articles
  • Organotin compounds(TBT and DBT)
  • Emissions of volatile components

Certification may be given to a finished product (such as a shirt), or to individual components (such as yarn, or fabric).

Oeko-Tex Standard 1000

The Oeko-Tex 1000 is a certification for environmentally-friendly textile production.
The goal of the Oeko-Tex 1000 Standard is to be “an evaluation of the environmental performance of textile production sites and products and to document independently that certain environmental measures are undertaken and a certain level achieved.”

The evaluation process includes considerations for:

  • environmental impact: energy consumption, whether materials used are renewable or non-renewable, and the overall impact of the space utilized
  • global impact: use of fossil fuels, use of ozone-depleting chemicals regional impact: VOC’s, water contamination, acidification of soil and water from fossil fuel use, emissions (often from chlorine bleaching)
  • local effects: emissions, workplace contamination, noise, use of dangerous chemical products

The mark is not applied directly to products, but may be used by the production site (for example, on its letterhead and official documents). The “local effects” consideration does NOT include an evaluation of labor practices and is not meant to be an indicator of whether a production site is following fair labor practices.

Oeko-Tex 100Plus

This label may be used on products that have met the Oeko-Tex 100 Standard and are also produced in a facility that meets the Oeko-Tex 1000 Standard.

So, these are the important points to keep in mind when you see the Oeko Tex logo:

  1. Oeko Tex 100 is product specific – they don’t look at processing (i.e., water treatment, workers rights, emissions, sludge), it only means that the finished product (fabric, yarn, clothing, etc.) has limit values for chemicals which are below the threshold limits on the Oeko Tex list, with many specifically prohibited.
  2. Oeko Tex 1000 is site specific, and documents that certain environmental standards are met, but these do not include workers rights issues.
  3. Oeko Tex 100+ means that the site meets environmental standards and the product itself is safe to use.

Certifications – what to look for in textiles

13 10 2009

Apparently Good Housekeeping now has a green seal of approval.  UL laboratories, the safety test lab, also has it’s own green seal of approval.  In fact, according to the new 2009 Conscious Consumer Report from BBMG, there are now over 400 different certifications  related to “green” and environmental attributes of products and services.  So many that such marks risk losing their effectiveness.    Steven Colbert  said that they now had a “Green Colbert Report”  – they’re reducing their emissions by jumping on the bandwagon.

And like all comedy, it only hurts when we laugh.  Since we’re all about textiles, let’s focus here.   Do you even know what certifications pertain to textiles?

The market is absolutely rife with claims about organic cotton – and believe me, I have absolutely nothing against organic cotton.  But the focus (by marketers and consumers alike) is that if it’s made of organic cotton, then the product is sustainable.  That’s far from the truth.  We like to use the analogy of “organic applesauce” – that is, if you take organic apples, then cook them with preservatives, emulsifiers, Red Dye #2, stabilizers and any number of other additives – do you end up with organic applesauce?  Just like bread – which is made from wheat which is grown (maybe organically), harvested, ground into flour, mixed with milk, yeast, salt and maybe other things, then baked – fabric undergoes the same type of transformation.  cotton bollI mean, really, do you actually think that the cotton boll which you see in the picture is transformed into your blouse without some kind of serious work?  What about oil?  Think of crude oil and and your new sheets – what do you think has to have happened to that crude to make it acceptable for your bedroom?

So the certifications which are often used for fabrics have only to do with the FIBER, and not with the processing.  The processing is environmentally damaging and results in fabric that contains many chemicals that seriously jeopardize our health.  And often a product is advertised as being an “organic fabric” when what they mean is the fabric started out with organic fibers – but the processing, like the organic applesauce mentioned above, results in fabric that contains a high proportion, by weight, of synthetic chemicals (such as lead or mercury, formaldehyde, chlorine, or phthalates).

Besides the proliferation of certifications, further muddying of the waters happens because some of the certification agencies which can certify fabric ALSO certify fiber.  In other words, each end product can be certified.  So if we deconstruct a piece of fabric, we can have certification at each stage:   (1) growing and harvesting of organic fibers  (2) ginning or other preparation of the fibers to make them suitable for use in spinning;  (3)  spinning of the fibers into yarns; (4) weaving of the yarns into fabric and (5) final product (i.e., blouse, tablecloth, etc.).  Makes you dizzy doesn’t it?

It’s quite common to find  “organic cotton” fabrics  in the market – in other words, fabrics made of organic fibers.  Or at least,  the claim is that the fibers are organic.   Unless they are certified organic fibers, the claim is meaningless:    there are no standards for calling a natural fiber “organic” since by definition  they are organic – because the definition of “organic” is  “of, relating to, or derived from living organisms.”  There is a big difference between a fabric or product which claims to be “organic” and one that claims to be “certified organic”.  So it is important to look for the certification and ask who certified the fibers (if they don’t display that information).  Believe me, if a company has gone to the trouble and expense of certifying their fibers, they will definitely have the information of who did the certification!

Common certification agencies for fibers include:

  • United States Department of Agriculture, National Organic Program
  • Soil Association Certification Limited (SA Certification) is the UK’s largest organic certification body. It’s also the only certification body linked to a committed charity, promoting organic food and farming.
  • OneCert:  OneCert provides organic certification worldwide. Certification and inspection programs include the US National Organic Program (NOP), European Organic Regulations (EU 2092/91), Quebec Organic Standards (CAQ), Japan Agricultural Standards (JAS), IFOAM, and Bio Suisse. Services include organic certification, organic inspection, export certificates, transaction certificates, on-line record keeping, answers to certification questions, and presentations of organic topics.
  • Control Union (Skal):  Control Union is a global one-stop-shop for a range of certification programs, including organic fibers.  It certifies to the standards of
    • AB logo
    • Bio Suisse
    • Canada Organic Regime
    • EU organic
    • Japanese Agricultural Standards
    • Naturland inspections
    • NPOP
    • Polish EU organic
    • USDS/NOP
  • The Institute for Marketcology (IMO): IMO is one of the first and most renowned international agencies for inspection, certification and quality assurance of eco-friendly products. Its world-wide activities are accredited by the Swiss Accreditation Service (SAS) according to EN 45011 (ISO 65), which is the international standard for certification. IMO offers certification for organic production and handling according to the European Regulation (EU) Nr. 2092/91.

The certifications  above verify that the fibers have been grown and harvested to organic standards set forth by the various standards.  But they do not deal in any way with the processing of the fibers into fabric.

There exist several third party certifications which we think every conscious consumer of fabric should be aware.  We  should all know what the certification does – and doesn’t – cover:  Oeko-Tex, GOTS, C2C, GreenGuard, Global  Recycle Standard and SMART.

Before giving a summary of the main points of each of the certifications which deal with fiber processing (i.e., weaving), it’s important to note that these certifications are all in business – it costs money to achieve the certification –  sometimes it costs a LOT of money.    Like organic designations in food, some farmers, for example, grow hemp sustainably (because they can).  But  because there isn’t a robust market yet for hemp they don’t want to spend the money for the certification to show it as organic.  Cradle to Cradle and GreenGuard can cost up to $30,000 per product for certification, so when you look on the web sites for these certifications,  you see only large, well established companies who can afford to pay the certification costs.  In addition to these certifications, there are many new “green guides” on the internet which purport to list green products.  A basic listing may be free, but any additional bells and whistles costs money.  So prominently featured green products may be specially featured because the manufacturer has paid for the spotlight.

List of certifications:

GREENGUARD_logo_op_722x464GreenGuard (www.greenguard.org). GreenGuard is not designed specifically for fabrics, but it is often advertised that a fabric is GreenGuard certified. GreenGuard has developed proprietary indoor air-quality pollutant guidelines based on government and industrial bodies.  Those products that pay the testing fee and pass muster earn the right to call themselves GreenGuard certified.  It was launched in 2000 by Atlanta-based for profit Air Quality Sciences (AQS), which is now a separate not for profit organization.

GreenGuard tests for the emitting chemicals coming from a product; that means it tests only for evaporating chemicals, chemicals which are a gas at room temperature.   And that is all GreenGuard does – it does not look at the production of the fabric, or any social justice issues nor does it look at carbon footprint.

And GreenGuard, by measuring only emitting chemicals, is significant for what it does not measure:

  • It does not measure any of the heavy metals (lead, mercury, copper, etc.)
  • It does not measure PVC, which is a polymer and therefore not volatile
  • It does not measure phthalates (except in the Children and Schools certification); phthalates are semi volatile, and don’t begin to evaporate until approximately 7 days after exposure to the air.

oko-tex_logo_filament_acetateOeko Tex (www.oeko-tex.com):  founded to provide an objective and reliable product label for consumers and a uniform safety standard for the assessment of harmful substances in fabrics.  Its aim is to ensure products are free of harmful substances.

The Oeko-Tex Standard 100 excludes harmful substances or limits their use. The following parameters form part of the Oeko-Tex list of criteria:

Specifically banned

  • AZO dyes*
  • Carcinogenic and allergy-inducing dyes
  • Formaldehyde*
  • Pesticides
  • Chlorinated phenols
  • Chloro-organic benzenes and toluenes
  • Extractable heavy metals
  • Phthalates* in baby articles
  • Organotin compounds (TBT and DBT
  • Emissions of volatile components

Biologically active products and flame-retardant products are regulated separately.  Oeko Tex is a registered trademark.  Make sure that the test number is quoted and the test institute is named as shown on the logo above.

This certification does not look at the processing or manufacturing (whether wastewater is treated, for example, or renewable energy is used to power the mill) – it is solely concerned with the final product.  There are also no social requirements.

c2c_logoCradle to Cradle (www.c2ccertified.com) : primarily it certifies that the product uses environmentally safe and healthy materials – however the list of what is considered safe is proprietary so we have to take their word for it.  In other words: they’re not transparent. C2C certifies just the product, without looking at how it is installed or used.   It has an energy, water and social responsibility component.

Cradle to Cradle’s strength is in material chemistry.  All ingredients in a product are identified down to 100 parts per million (ppm) and assessed according to 19 human and environmental health criteria:

C2C Human and Environmental Health Criteria
Human Health: Environmental Health
Carcinogenicity Fish Toxicity
Endocrine Disruption Algae Toxicity
Mutagenicity Daphnia Toxicity
Reproductive Toxicity Persistence/ Biodegradation
Teratogenicity Bioaccumulation
Acute Toxicity Ozone Depletion/ Climatic Relevance
Chronic Toxicity Material Class Criteria
Irritation Content of Organohalogens
Sensitization Content of Heavy Metals

All ingredients are rated: green, yellow, red (which has been ascertained to be toxic) or grey (incomplete data, handled like a red).   To achieve Gold and Platinum levels, a product cannot contain any ingredients classified as RED – unless there are no existing substitutes.  MBDC developed this database and it is not available to outsiders.

All ingredients are classified as either a technical or biological nutrient: published C2C literature doesn’t define “recyclable” or “compostable” but MBDC uses European Union guidelines for biodegradability, and Federal Trade Commission (FTC) guidelines for recyclability.  FTC guidelines require an established recycling pathway.

For the energy component, it  focuses on the manufacturer’s use of renewable energy in production.  Manufacturers need to use renewable energy for the product’s manufacture to achieve Gold certification, and for the energy used in the product’s entire supply chain to achieve Platinum.  Renewable energy may be purchased on site or purchased thru energy credits.

Certification requires that companies work to preserve the quality and supply of water resources; implementation of these guidelines is required for Platinum.

Manufacturers must adopt corporate ethics and fair labor statements

However,  it’s easy to confuse the ideals and philosophy of the founders with the actual requirements for certification.  For example, a C2C Silver doesn’t guarantee that a product is free of all red ingredients; the only “knockout” chemical at Silver is PVC.  There is no report card for consumers that details what a certified product does or does not include.

In addition,  nutrients may not be returned to technical or biological cycles as described:  the minimum requirement for certification is that a product be 67% recyclable or biodegradeable.   But even a 100% recyclable product may not be able to return to either the technical or biological nutrient cycle.

MBDC certifies just the product, without looking at how it is installed or used.  HYCRETE (an additive to make concrete waterproof) is an example of how misleading this can be – when used as intended, HYCRETE is not biodegradeable and cannot be recycled by any established process.  Yet the product can degrade –  if you accidentally spill a five gallon bucket into a local stream, it’s going to degrade and isn’t going to do any harm.  Yet if used as intended it can neither biodegrade nor be recycled.

C2C criteria does not  refer to manufacturing byproducts or the waste and energy use associated with resource extraction (such as is the case with polyester).  Also the energy and water use standards focus on manufacturing, leaving out the energy and water consumption that results from use of the product.

EXAMPLE: Kynar (coating on Formawall panels): uses fluoropolymer in mfring process which releases PFOA (bioaccumulative and likely carcinogen).  But the PFOA slips thru the C2C assessment since it’s not a  product ingredient.

Finally, some say that C2C is not true third party certification,  but rather a second party program  since MBDCs primary business is consulting with manufacturers,

IN SUMMARY: C2C is distinguished by inspiring ecological thinking,  affiliation with respected thought leaders and idealism.  But it is complicated by a  lack of transparency and gaps in underlying criteria; lack of boundaries between the C2C standards developing body, C2C certification body and the MBDC consulting body.

They’re revising it now, but historically they have not looked at carbon footprint.

For more on C2C, see the article “Cradle to Cradle Certification: A Peek Inside MBDC’s Black Box”, which appeared in Environmental Building News, February 2007

GOTS Logo middleThe Global Organic Textile Standard (GOTS) ( http://www.global-standard.com;  see also: www.organic-textile-services.com) is a collaborative effort between the United States Organic Trade Association, Soil Association, International Association Natural Textile Industry (IVN) and Japan Organic Cotton Association (JOCA) to codify textile standards so consumers and manufacturers have one certification – an important step toward harmonization and transparency in textile labels. Since work began on codifying the Global Organic Textile Standard (GOTS) in 2002, it has evolved into the leading set of criteria in the field of organic textile processing.

GOTS aims to define a universal standard for organic fibers—from harvesting the raw materials, through environmentally and socially responsible manufacturing, to labeling—in order to provide credible assurance to consumers. Standards apply to fiber products, yarns, fabrics and clothes and cover the production, processing, manufacturing, packaging, labeling, exportation, importation and distribution of all natural fiber products,   GOTS provides a continuous quality control and certification system from field to shelf.  There are also social responsibility components (i.e., fair wages, no forced or bonded labor, etc.)  All parameters are listed and accessible. The GOTS parameters for materials include prohibitions or restrictions on:

  • Aromatic solvents
  • Chloro Phenols (TCP, PCP)
  • Complexing agents (APEO)
  • Formaldehyde and short chain aldehydes
  • Fungicides and biocides
  • Halogenated solvents
  • Heavy metals
  • Ammonia treatment

There are detailed social criteria:  no forced or bonded labor; workers are not required to lodge “deposits” or identity papers with employer; no child labor; workers are free to leave after reasonable notice; working conditions are safe and hygenic.

Wastewater treatment includes measurement  and monitoring sediment quantities, waste water temperature and waste water pH. Wastewater from wet-processing sites (except greasy wool scouring sites and flax retting sites) must, when discharged to surface waters after treatment, have a COD content of less than 25 g/kg of textile output expressed as an annual average.   If the effluent is treated on site and discharged directly to surface waters, it must also have an pH between 6 and 9 (unless the pH of the receiving water is outside this range) and a temperature of less than 40C° (unless the temperature of the receiving water is above this value). The COD/BOD ratio must be ≤ 5. The copper content must not exceed 0,5 mg/l.

The GOTS certification applies to only natural fibers, it cannot be applied to polyester or other synthetic fibers.

smart_logo_2SMaRT Sustainable Products Standard (www.sustainableproducts.com):  based on transparency, using consensus based metrics and life-cycle analysis. They also have in place rules which prevent industry trade association dominance so they can move substantially beyond the status quo.  Renewable energy and conventional energy reduction are specified.

Environmental, social and economic performance criteria are defined and quantified In areas such as:

  • Acid Rain
  • Smog
  • Climate change
  • Habitat alteration
  • Ozone depletion
  • Fossil fuel depletion
  • Criteria and indoor air pollutants
  • Water pollutants water intake
  • Solid and hazardous waste

The Sustainable Textile Standard incorporates procedures and protocols established in the following sustainability standards, thereby eliminating both redundancies and potential inconsistencies:

SMART has a certification specifically for textiles called the Smart Sustainable Textile Standard.  For textiles it requires 1300 chemicals be tracked and addressed; it is also transparent (i.e., nothing is proprietary or hidden in their requirements or in decision making).  Confers multiple achievement levels.

Global recyc std

The Global Recycle Standard (www.certification.controlunion.com):   This  brand new standard was developed to help verify claims regarding recycled products.  The Gold level requires products to contain 95 – 100% recycled material; Silver requires 70 – 95% and Bronze contains a minimum of 30%.  The definition of “recycled” under this standard is based on criteria already laid down by Scientific Certification Systems.  In addition,  the standard contains environmental processing criteria and strick raw material specification (water treatment and chemical use is based on GOTS and Oeko-Tex 100)  and social responsibility is incorporated – which ensures workers health and safety and upholds workers  rights  in accordance with International Labor Organisation (ILO) criteria.