How to Choose Reusable Plastic Harvest Containers (RPCs)

Reusable plastic containers (RPCs) can reduce one-way packaging, standardize handling and protect produce from field to packhouse—but only when the crate, lug or tote fits the crop, load, sanitation system and return logistics. The lowest unit price is rarely the best comparison.

Use a documented qualification process. A container must work with real harvest practices, pallet patterns, cooling, washing, storage and transport—not only look suitable in a catalogue.

Selection criteria

• Crop and pack style: delicate berries need different support and ventilation than roots, orchard fruit or bulk ingredients.
• Usable capacity: compare internal volume and safe working load, not outside dimensions alone.
• Ventilation and drainage: openings must support cooling and washing without bruising, snagging or product loss.
• Stack, nest or collapse: loaded stability and empty return efficiency affect warehouse space and freight.
• Ergonomics: handle design, tare weight, lift height and fill weight influence worker strain.
• Material documentation: obtain appropriate food-contact and traceability information for the intended use.
• Cleanability: ribs, hinges, labels and damaged surfaces can retain debris or make inspection difficult.
• System fit: confirm pallet, conveyor, washer, cooler, rack, truck and retail-display compatibility.

Real-world qualification audit

Collect evidence across one complete cycle. Record the crop, fill weight, harvest temperature, stack height, transport route, cooling method, wash chemistry, storage method and number of turns. Photograph deformation, broken handles, retained debris and product damage.

Compare lifecycle cost using the purchase price plus washing, handling, reverse logistics, losses and replacement—divided by verified uses. Avoid assuming a theoretical turn count will be achieved without a return and accountability program.

Step-by-step method

1. Map the operating cycle

   Document every location and handler from field to return storage. Note manual lifts, drops, pallet transfers, cooling, wash steps and places where containers are lost or exchanged.

2. Define product protection

   Set acceptable compression, abrasion, temperature and contamination limits for the crop. Establish the maximum fill weight and stack height using real product, not only water volume.

3. Check dimensions and equipment

   Measure pallets, racks, conveyors, washers, doorways, vehicles and retail fixtures. Verify whether the loaded container locks securely in a mixed or single-size stack.

4. Review documentation

   Ask the supplier for resin identification, food-contact suitability, load and stacking data, temperature limits, cleaning guidance, warranty and replacement availability. Match the documentation to the exact model and colour.

5. Assess handling and ergonomics

   Have actual workers lift, carry, tip and stack the trial container at working weight. Watch wrist posture, finger clearance, sharp edges and grip when wet or gloved.

6. Validate cleaning and sanitation

   Develop a written procedure for soil removal, washing, rinsing, sanitizing where required, drying, inspection and storage. Verify that the container design and chosen chemistry can meet the standard consistently.

7. Run a pilot

   Put several candidate containers through harvest, cooling, transport, unloading, washing and return. Record produce damage, container damage, labour time and cube efficiency.

8. Specify and control the purchase

   Lock the approved manufacturer, model, dimensions, colour, marking and documentation. Define acceptable substitutions and requalification requirements so purchasing changes do not silently alter the system.

Cleaning and sanitation

Cleaning removes soil and debris; sanitizing reduces microorganisms after cleaning. A sanitizer cannot compensate for trapped organic material. The Canadian Food Inspection Agency recommends a written program that identifies who performs the work, what is cleaned, where, when, how, and which records and verification steps are required.

Use chemicals compatible with the container resin and at the concentration, contact time and temperature specified by the chemical supplier. Inspect cracks, damaged hinges, labels and rough surfaces that can retain material.

Common mistakes

• Choosing by outside size or price alone
• Ignoring the safe loaded stack height
• Assuming ventilation openings are harmless to delicate produce
• Buying a collapsible model without testing hinges through the wash cycle
• Accepting generic food-contact claims without exact-model documentation
• Assuming plastic prevents contamination
• Failing to budget washing, returns, loss and replacement
• Ordering a full fleet before a real harvest pilot

Frequently asked questions

Are vented crates always better for produce?

No. Ventilation supports cooling and drainage, but opening size and edge geometry can mark delicate produce or allow small items to escape. Test with the actual crop.

Should containers nest or collapse?

Nesting is simple and durable but may require rotating the crate. Collapsible containers can reduce return volume but add hinges and surfaces that require inspection and cleaning.

How do I compare prices fairly?

Calculate verified cost per use, including washing, return freight, labour, loss and replacement. A more expensive container can be cheaper per turn if it survives and returns reliably.

Do I need different colours?

Colour can support ownership, crop, grade, allergen or workflow identification. Make sure colour coding is documented and does not replace labels or traceability records where those are required.

Sources and further reading

• Canadian Food Inspection Agency: Cleaning and Sanitation Program

This guide provides general educational information. Products, substrates, site conditions and regulations vary. Follow the current technical data sheet, package directions and safety data sheet for every product you use. Code-regulated, structural or safety-critical work may require a qualified professional.