# How does a dye intermediate unit split boiler steam across products?

Canonical: https://senseible.earth/answers/dye-intermediate-unit-steam-allocation-per-kg

Share the boiler's fuel emissions by steam used per product: from batch records or flow meters if you have them, otherwise by reactor hours. Write down the rule, then divide each product's share by kg produced.

## Steps

Boiler fuel for the month x its factor.

Steam share per product, from meters or batch logs.

Product share / kg of that product.

## Electricity

Reactor agitators, pumps and chillers run on grid power: add each product's share of kWh x 0.710.

## What Senseible does here

Senseible reads the energy invoices behind the making stage into a fingerprinted Scope 1 and 2 record, and keeps material invoices on the Scope 3 trail. Material factors come from your supplier or a named database and are labelled with their source, so the product figure can be traced line by line.

- [Dye and pigment per kg](https://senseible.earth/answers/dye-pigment-carbon-footprint-per-kg)
- [CO2 per tonne of steam](https://senseible.earth/answers/co2-per-tonne-of-steam)
- [Solvent recovery steam](https://senseible.earth/answers/solvent-recovery-distillation-steam-emissions)

Sources: [GHG Protocol Corporate Standard](https://ghgprotocol.org/corporate-standard), [ISO 14067 Carbon footprint of products](https://www.iso.org)

Last reviewed 2026-10-21.