That’s rocor nb liquid by unitor
what type it is:
product: rocor nb liquid
brand: unitor - whessoe fluid service
type: cooling water treatment chemical / corrosion inhibitor
form: liquid
pack: looks like 25l jerrycans - standard unitor size
what it's used for:
label says: uses: cooling water treatment
main applications:
1. industrial cooling systems - cooling towers, chillers, heat exchangers
2. corrosion + scale prevention - stops rust and mineral deposits in pipes and equipment
3. biological control - helps prevent algae and bacterial growth in recirculating water
4. marine & power plants - very common on ships, factories, hvac systems