PHA 1.75mm Natural 1KG
PHA 1.75mm Natural 1KG
Petrochemical-Free 3D Printer Filament
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Natural PHA is a 100% bio-based, petrochemical-free filament for creators who put sustainability, material integrity and surface quality first. Produced through microbial fermentation and supplied on a fully recyclable cardboard spool, this pure, unpigmented PHA delivers a warm, organic matte finish for design studios, education and environmentally conscious product development.
PLA only breaks down in a commercial composter. PHA biodegrades in soil and sea: 90%+ in 56 days of seawater, tested to ASTM D6691. One of the lowest end-of-life impacts of any 3D printing material.
Colour Natural Unpigmented Material PHA Diameter 1.75mm Weight 1KG -
FREE SHIPPING in Australia for all orders over $80. Otherwise flat-rate postage of $11 applies within Australia.
Orders are shipped within 1 business day of order confirmation from our Sydney warehouse. You should expect your package within 2-8 business days upon receiving your dispatch confirmation. Read more.
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14-day money-back guarantee on all orders. If you're not happy, we're not happy either. If you don't love our product, you'll get a full refund. Read more.
Filament that’s better for you and the planet.
PHA (polyhydroxyalkanoate) is a naturally occurring polyester produced inside microorganisms. After fermentation, the bio-polymer is harvested, purified, and pelletised into a high-purity material that is:
Naturally biodegradable
Completely free from petrochemicals
Naturally matte and warm in tone
Unpigmented and additive-free
PLA, by comparison, is plant-derived but synthetically polymerised and typically requires commercial composting conditions to degrade. PHA’s ability to break down in natural environments makes it a much more circular material.
Benefits of PHA Include:
More sustainable than PLA — naturally biodegradable without requiring industrial composters
Supplied on a recyclable cardboard spool
Matte, natural finish ideal for design and presentation models
Verified marine biodegradation
Low odour
Excellent detail and surface texture
Suitable for indoor and educational environments
Print Biodegradable Parts Petrochemical-Free & Naturally Biodegradable
PLA only breaks down in a commercial composter. PHA biodegrades in soil and sea: 90%+ in 56 days of seawater, tested to ASTM D6691. One of the lowest end-of-life impacts of any 3D printing material.
Breaks Down Clean
PHA breaks down to carbon dioxide, water and biomass. No pigment, no additives, so nothing else goes into the ground. That is the whole reason we keep it pure.
Premium Natural Matte Finish
The organic, unpigmented matte finish gives prints a refined, design-forward appearance that stands apart from plastics. Paired with a zero-plastic cardboard spool, it signals sustainability from the first glance to the final printed object.
Quick Settings
When printing in this material for the first time, these settings are a great place to start. It is important to note, printer settings may vary depending on the printer model. Get in touch with us directly if you need any help in troubleshooting at info@standardprintco.com
Nozzle Temperature
200ºC ±10ºC
Bed Temperature
For best results, print on a cold, unheated bed.
Print Speed
40-60mm/s
Fan Speed
Layer 1: 0%
Layer 2+: 100%
Retraction Speed
35-45mm/s
Retraction Distance
Bowden: 4mm Direct: 2mm
Why Choose Us?
Us
Competitor
Made From 90% Recycled Material
Available On Refillable Spools
Tangle-Free Spooling
Laser Accurate Tolerances
Free Moisture Proof Storage Bag
5+ Year Shelf Life
100% Carbon Neutral Shipping
24-Hour Fulfilment From Australian Warehouse
Afterpay Available
14-Day Moneyback Guarantee
FAQ’s
+ Can I compost this in my garden?
Yes. PHA can biodegrade in garden soil. For best results, break the print into smaller pieces to increase surface area—this helps microbes access the material faster. It is safe for plants, soil health, and microorganisms.
+ Can I throw it into the ocean?
No, we do not recommend intentionally discarding anything into the ocean. However, if a print is accidentally lost or enters the environment, it will biodegrade. Laboratory testing shows around 87–88% biodegradation within 56 days under natural seawater conditions (ASTM D6691). In contrast PLA does not biodegrade in seawater.
+ Will it release harmful chemicals as it breaks down?
No. Pure PHA breaks down into carbon dioxide, water, and biomass. It does not produce toxic chemicals or microplastics. Because this filament is unpigmented and additive-free, there are no metallic residues, dyes, or stabilisers left behind during biodegradation.
+ Why is this filament unpigmented?
Pigments can introduce metals or stabilisers that interfere with natural biodegradation. We chose to keep this material completely pigment-free to ensure the cleanest, safest breakdown profile possible—ideal for soil, marine environments, education, and eco-conscious design.
+ Is it more sustainable than PLA?
Yes. PLA typically requires an industrial composter to break down. Pure PHA can biodegrade naturally in both soil and marine environments, making it one of the most environmentally aligned 3D printing materials available.
+ Can I use my PLA print profile?
No. Pure PHA benefits from its own dedicated print settings. A full PHA Printing Guide is included to make tuning simple.
+ Is it suitable for classrooms or indoor use?
Yes. PHA is bio-based, low odour, and supplied on a fully recyclable cardboard spool—making it suitable for schools, studios, and environmentally conscious workspaces.
+ Is it TÜV certified? Can I have the certificate number? What about REACH?
No. Certificates follow the product: pellet, filament and printed part each need their own, so a number on our spool covers nothing you print. Test data and a Material Compliance Statement is available above. PHA is a polymer, and polymers sit outside REACH registration under Article 2(9).
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