ComPlast Testing

ComPlast Bags have undergone rigorous testing by approved authorities,

by Organic Waste Systems (DWS), based in Belgium. 


We DO NOT however meet composting standards neither home nor Industrial because we are required to disintegrate 90%  to pieces 2mm or smaller within 90 days. We disintegrate 85% within 90 days. We are working on a new formulation to meet this standard.  Once met we will seek certification. 

 The following graph shows the tests  that have been carried out. 

Certification Summary | ComPlast 

Category Criteria Test Standard Industrial Composting Home Composting
Aerobic Biodegradation - Controlled Composting (58˚C) > 90% in180 days ISO 14855 100%  
Aerobic Biodegradation - At Under 30°C  > 90% in 12 months ISO 14855-1   Not Tested Yet
Disintegration - Controlled Composting (58˚C) >90% smaller than 2mm in 12 weeks ISO 16929 85%  
Disintegration - At Under 30°C  >90% smaller than 2mm in 26 weeks ISO 20200   84%
Characterization >50% organic. Independent 99.5% 99.5%
Does not exceed maximum allowable values for specified heavy metals Independent Achieved Achieved
Compost Quality No negative effect: Density, Total dry solids, Volatile solids, Salt content, pH, N, P, Mg, K.  AS 4454 Achieved Achieved

Germination rates and plant biomass to be impacted no more than 10%


Assessment of acute toxicity in the rat. (acute toxicity class method)


EN 13432 (Appendix E)





OECD 423


2% Cress, 3% Barley







2% Cress, 3% Barley





Not Toxic


Morbidity rate in earthworms to be less than 10% ASTM E1676 Not Tested 
Category Criteria Test Standard General Testing
Standard Soil Biodegradation 60% at the end of test period. ISO 17556 59.4%
Marine Aerobic Biodegradation > 90% in 133 days ASTM D6691 85.3% ± 9.1%
Aqueous Aerobic Biodegration  > 90% in 141 days ISO 14851 90%


Please note that the ComPlast product disintegration levels approach, but do not yet meet the levels required for certification under EN13432 and AS4736 certification. However, after 12 weeks of aerobic composting 85% of a ComPlast test product will be in pieces 2mm in diameter or less (the requirement for certification is 90%). 

What are bioplastics?

Recent testing done in New Zealand, by Scion, show that this product is a bioplastic basically made up of vegetable oils , cassava , starch  with a marginal percentage of PCL.  We continue to seek compostable certification as a Bioplastic. 

Introduction to Bioplastics - Scion

Article of Interest

A simple explanation of bioplastics and biodegradable plastics, their benefits for the environment and drawbacks.