Chemical Handling & Mixing: the full procedure

Store, transport, mix, and handle cleaning chemicals strictly by the label, SDS, and safety plan.

• Applies to: All Technicians
• Frequency: Every job involving chemicals; review at onboarding
• Scope: Covers the workflow of handling and staging chemicals safely. ALL chemical identity, dilution ratios, dwell times, mixing compatibility, PPE, and first aid defer entirely to the product label, SDS, and the business safety plan — this SOP specifies no formulas.

What you need

• SDS binder/access
• Label-specified PPE
• Sealed/labeled containers
• Measuring/dilution equipment
• Spill kit
• Eyewash/water source

The procedure, step by step

1. Read the label and SDS first — Before handling any product, read its label and SDS for hazards, PPE, mixing, and first aid. This is non-negotiable and overrides any verbal instruction.
2. Wear required PPE — Put on exactly the PPE the SDS requires for the product in use.
3. Never mix incompatible products — Do not combine chemicals unless the label explicitly permits it; incompatible mixes can create hazardous reactions. Compatibility defers to the SDS.
4. Mix to label ratio only — Dilute strictly to the label's specified ratio using proper measuring equipment — never by eye.
5. Label every container — Keep all containers sealed and clearly labeled with contents; never store solution in unmarked or food containers.
6. Transport secured — Secure containers upright in the vehicle to prevent spills and keep incompatible products separated.
7. Handle spills per plan — Contain and clean spills using the spill kit and the procedure in the SDS and safety plan; report as required.
8. Store per label — At end of day, store chemicals per label requirements away from heat, sunlight, and unauthorized access.

Quality check before you finish

• Label and SDS read before handling each product
• SDS-required PPE worn
• No incompatible products combined
• Dilution measured to label ratio (not by eye)
• All containers sealed and clearly labeled
• Containers secured upright for transport
• Spill kit and SDS first-aid info accessible on site

This is a free, source-anchored standard operating procedure (SOP) you can print and hand to staff. It documents the work sequence for a Pressure Washing business — not safety or regulatory rulings, which defer to the cited authorities, the applicable code, and your own health-and-safety plan. Open the tool above to print it, toggle ink-saver, or (with a free ToolFluency Business account) edit it to match your own workflow.

Sources

• OSHA (osha.gov)
• UAMCC (uamcc.org)
• Cleaner Times (cleanertimes.com)