When a used IBC arrives at our 12,000-square-foot facility in San Francisco's SoMa district, it begins a systematic reconditioning journey that can take anywhere from two hours to two days depending on its condition and intended end use. This article walks you through every step of our process — the inspections, the cleaning, the repairs, and the quality checks that ensure every container we sell meets our standards.
Step 1: Receiving and Initial Inspection
Every incoming IBC is photographed and logged into our inventory management system with a unique tracking number. We record the manufacturer, date of manufacture (from the UN marking), previous contents (from labels and documentation), and the source from which we acquired the container. This data follows the container through every subsequent step and eventually becomes part of the documentation we provide to the buyer.
The initial inspection evaluates three things: the structural integrity of the cage and pallet, the condition of the HDPE bottle, and the nature of the previous contents. Containers that previously held hazardous materials are segregated immediately for specialized handling. Those with severe structural damage are directed to recycling. The rest proceed to cleaning.
Step 2: Draining and Pre-Rinse
Any residual contents are drained into appropriate collection tanks. Even containers that arrive labeled as empty typically contain one to five gallons of residual product. This residue is handled according to its material classification — food-grade residues go to one stream, industrial chemicals to another, and hazardous residues to licensed hazardous waste processing.
After draining, the container receives a pre-rinse with ambient-temperature water to remove loose debris and begin dissolving water-soluble residues. The pre-rinse water is captured and treated before discharge — nothing goes directly to the storm drain.
Step 3: Triple-Wash Cleaning
Our core cleaning process uses a three-stage wash protocol. The first wash uses hot water at 140°F with an alkaline detergent to break down organic residues. The second wash uses a neutral pH rinse to remove detergent residue. The third wash is a sanitizing rinse — for food-grade containers, this uses a peracetic acid solution; for industrial containers, a general-purpose antimicrobial.
- Cleaning is performed with automated rotary spray heads that reach all interior surfaces
- Water temperature, pressure, and detergent concentration are monitored and logged
- Each wash cycle runs for a minimum of 10 minutes per stage
- Total water usage per IBC: approximately 40 gallons (75% is reclaimed and recycled)
- Food-grade containers receive additional ATP swab testing after the final rinse
- Containers that do not pass cleanliness verification are re-washed or downgraded
Step 4: Structural Repair
After cleaning, the container moves to the repair station. Cage bars that are bent less than 15 degrees from true can be straightened with hydraulic tooling. Broken welds are re-welded. Corroded sections are cleaned and treated with rust-preventive coating. Pallet boards that are cracked or missing are replaced. The butterfly valve and fill cap are removed, inspected, and replaced with new components if they show any wear.
The HDPE bottle is inspected under bright light for cracks, crazing, or deep scratches. Minor surface scratches are acceptable for industrial grades. Any crack that penetrates more than halfway through the wall thickness disqualifies the bottle from liquid service. Bottles that pass inspection but show UV discoloration are downgraded accordingly.
Step 5: Grading and Labeling
| Grade | Criteria | Typical Application |
|---|---|---|
| A — Like New | Clean, clear bottle; straight cage; new valve and cap | Food-grade, pharmaceutical, clean chemical storage |
| B — Good | Minor staining or scratches; cage may have minor cosmetic bends | General industrial, water storage, agriculture |
| C — Fair | Moderate staining, UV discoloration; cage repairs visible | Rainwater, construction, non-critical storage |
| Recycle | Cracks, heavy damage, or contamination beyond cleaning | Material recovery only |
Step 6: Quality Assurance
Every IBC that passes the reconditioning process receives a final quality assurance check by a senior technician. This is a fresh set of eyes on the container — someone who was not involved in the cleaning or repair process. They verify the grade assignment, check the valve operation, confirm that labels are accurate and legible, and sign off on the container for sale. If there is any disagreement on grading, the container is downgraded to the more conservative classification.
Our reconditioning process is only as good as our quality assurance. Every container that leaves our facility carries our reputation, so we err on the side of caution with every grading decision.
Environmental Stewardship in Our Process
We designed our reconditioning process with environmental impact in mind. Our wash water reclamation system recovers 75% of cleaning water for reuse. Chemical detergents are biodegradable and used at the minimum effective concentration. Steel and plastic waste from repairs is separated and recycled. Our facility operates on 100% renewable electricity through San Francisco's CleanPowerSF program.
Reconditioning is inherently one of the most sustainable industrial processes — we are extending the life of an existing product rather than manufacturing a new one. But we believe the process itself should also be as clean as possible, and we continuously invest in improvements to reduce our water usage, energy consumption, and waste generation.
If you want to see our reconditioning process in action, we welcome facility visits by appointment. Contact us to schedule a tour — we are proud of what we do and happy to show you how we do it.