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#NGS National Green Specification
A Specification for the 21st Century

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816 GreenSpecDETOX


GreenSpecDETOX uses GreenSpecLCA results to help manufacturer's improve their products. 

Having carried out a GreenSpecEPD's Life Cycle Assessment the resulting data can be manipulated using Marginal Analysis to determine the impacts of all of the individual ingredients to determine which have the highest impacts; this information can then be used to selectively replace the highest impact ingredients with alternative materials with lower impacts. 

GreenSpec is working with Peter Ruifrok using with over 8000 known materials and their impacts to identify the materials to be replaced with alternatives.

GreenSpecDETOX uses a number of existing databases with detailed information on individual materials and chemicals to identify the worst offenders and identify other materials to consider for their replacements.

The manufacturer must then experiment with the alternatives to find the optimum performance with lower impacts.

This process can help in the REACH Regulation drive to remove unhealthy chemicals from manufacturing.

GreenSpecINDIVIDUAL IMPACTS come out of LCA Life Cycle Analysis and are used for two important activities:

MARGINAL ANALYSIS to understand the relative impact of all the individual ingredients or parts e.g. products, packaging, inputs, outputs, plastics, chemicals,

INDIVIDUAL IMPACTS Calculation and disclosure of individual impacts used in literature and calculations e.g. Embodied Carbon, Global Warming Potential, Sequestered Carbon

GreenSpecPRODUCT IMPROVEMENT Using Marginal Analysis GreenSpec assist the manufacturer to improve the product by minimising quntities of high impact ingredients or packaging and replaceing them with lower impact materials or energy sources.


LCA are based on hard and fast facts based on actual quantities reciep percentages and known material impacts, usually from 'cradle' (excavation from earth, extraction from plantations, etc.) to factory gate after manufacture.

EPD add onto the LCA from Factory Gate to Grave (including: construction, in use phase and end of life, landfill, recovery of energy (combustion) or nutrients (composting)) all of which is outside the realms of facts since they all occur in the future and based on current normal or best practice and some speculation.


GreenSpec use PASS to screen out the materials that have the highest environmental impacts and more importantly to identify the materials that have least impact and have a substantial contribution to make in use.  

GreenSpecPASS is used to select the Products that are then promoted in GreenSpecPRODUCT PAGES

Results of GreenSpecLCA and GreenSpecEPD can be recorded in GreenSpecPRODUCT DATA SHEET schedules and GreenSpecROBUST SPECIFICATION clauses.

All of these results can be recorded in BIM-ready GreenSpecCAD files promoted from GreenSpecPRODUCT PAGES

BrianSpecMan aka Brian Murphy
4th March 2013 - 20th May 2013



Fig. 1 REACH Website

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Fig. 2 ChemSec Website


Fig. 3 SIN Substitute It Now Website

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Fig. 4 ECHA European Chemical Agency Website


Fig. 5 ToxList Website


Fig.6 EWC European Waste Catalogue


Fig. 7 GreenSpec Appendix EWC 

BrianSpecMan aka Brian Murphy
18th May 2013





  • Architect's don't need LCA
  • GreenSpecPASS


BrianSpecMan aka Brian Murphy
23rd Feb 2013 - 20th May 2013