A concentration change can become an equipment change
Procurement may find the same chemical at a better price or with better availability in a different concentration. On paper, the substitution can look straightforward because the active ingredient is unchanged. At the dosing skid, however, the required volumetric flow changes immediately.
A stronger solution normally requires less volume to deliver the same active dose, while a weaker solution requires more. The existing metering pump must be able to operate accurately within the new range.
Pump turndown matters
Metering pumps generally perform best within an appropriate operating range. If the new concentration pushes the required flow too close to the bottom or top of the pump’s capability, dose control may become poor.
Operations or engineering should therefore calculate the expected dosing flow before procurement approves the change. A useful next step is our guide on chemical Spill Response: What Industrial Sites Should Prepare Before an Incident, which looks at the related practical considerations in more detail.
Materials of construction still need checking
A pump, diaphragm, seal, valve or tubing material suitable for one concentration may not automatically be the preferred material for another. Temperature and contamination can also influence compatibility.
The supplier’s chemical data and the equipment manufacturer’s compatibility guidance should be reviewed where a material change is proposed.
Viscosity and physical behaviour can change
Some chemical solutions become noticeably more viscous as concentration changes. That can affect suction conditions, calibration and transfer. Products that crystallise or precipitate under certain conditions create additional concerns.
A purchasing decision should therefore consider the physical product, not only the percentage printed on the COA.
The control system may need recalibration
If the plant controls dose in litres per hour, pump stroke or speed, changing concentration without updating the control basis can overfeed or underfeed the process.
Operators should know exactly when the new product enters service and what set-point changes are required.
Storage and delivery economics may improve
A stronger product can reduce freight and storage volume because less water is transported. Those savings can be significant for high-volume users.
The correct business case subtracts any equipment, calibration or handling cost required to use the stronger product safely and reliably.
Procurement should trigger the technical conversation early
The safest time to evaluate concentration is while quotations are being compared, not when a different-strength tanker is already on its way to site.
A short technical check protects the process while allowing procurement to pursue genuine logistics and cost improvements.
Discuss Your Requirement With Aviv Kitov Group
Aviv Kitov Group supports industrial organisations in Ghana with specialised chemical sourcing across regional and international markets. A useful sourcing discussion starts with the actual process requirement, including the approved specification or grade, quantity, packaging, delivery location and required date. For the wider context, our guide on safe Chemical Storage and Handling in Ghana: A Practical Industrial Guide brings the main procurement considerations together in one place.