Laser Cleaning for Biofilm Removal on Stainless Trays
The Problem: Inefficient Manual Cleaning
A recent client was having staff members tasked with manually cleaning thousands of stainless-steel trays used in their production process. Each tray took 7+ minutes to clean using traditional/manual cleaning techniques such as grinders and buffing pads.
The method was:
- Labor-intensive – often requiring 3–5 employees.
- Inefficient – staff could only clean a limited number of trays per day.
- Damaging – abrasive methods left scratches and weakened trays.
- Expensive – tray replacements cost several hundred dollars each.
This approach was neither scalable nor cost-effective for high-volume operations and they needed to be cleaned often. This is a recurring problem for the client.
The Solution: Laser Cleaning by Merritt Industrial
Why Laser Cleaning & Dry Ice Blasting Work for Biofilm Removal
Laser Cleaning Advantages
- Non-abrasive – Preserves tray lifespan by avoiding scratches or grinding damage.
- Precision – Pulsed laser energy targets biofilm without affecting the stainless substrate.
- Eco-Friendly – No chemicals, water, or secondary waste.
- Scalable – Ideal for facilities with thousands of parts, where consistency and speed are critical.
Dry Ice Blasting Synergy when added to laser cleaning
Dry ice blasting complements laser cleaning in many aspects
- Lifting loosened biofilm particles after laser treatment.
- Preventing secondary buildup, leaving trays spotless.
- Adding efficiency – reduces the number of laser passes required.
- Residue-free process – dry ice sublimates, leaving no secondary waste.
Cost Savings: A Better Investment than Manual Cleaning
While laser cleaning may appear more expensive hourly than manual labor, the total cost savings are substantial:- Labor Reduction: One technician replaces multiple staff members.
- Time Savings: 2 minutes vs. 7+ minutes per tray = thousands of labor hours saved annually.
- Reduced HR Costs: Lower staffing needs reduce payroll, training, and benefits costs.
- Fewer Injuries: Minimizes repetitive strain injuries and grinder-related risks.
- Asset Protection: Trays no longer need frequent replacement due to grinding damage — each tray saved represents hundreds of dollars preserved.
- Environmental Savings: No chemical purchases or disposal costs
In short, our solution is faster, safer, greener, and more cost-effective than manual cleaning.
Cost Comparison: Manual Cleaning vs. Merritt Industrial Laser Cleaning
At first glance, the cost of cleaning trays looks the same:
- Manual Cleaning by Staff: ~$10 per tray
- Laser Cleaning by Merritt Industrial: ~$10 per tray
But the real difference is in speed, efficiency, and resource allocation.
Manual Cleaning
- Average time: 7+ minutes per tray
- Labor required: 4 employees
- Daily output: ~50–60 trays (limited by time and fatigue)
- Challenges: repetitive strain, inconsistent results, tray damage risk
Merritt Industrial Laser Cleaning
- Average time: 2 minutes per tray
- Labor required: 1 technician with a laser system
- Daily output: 200+ trays (up to 4x faster than manual)
- Benefits: consistent finish, no abrasive damage, eco-friendly – No tray replacement costs
Easy-to-Understand Comparison
| Method | Cost per Tray | Employees Needed | Trays per Day | Efficiency |
|---|---|---|---|---|
| Manual (grinders & pads) | $10 | 4 staff | ~50–60 | Baseline |
| Merritt Industrial (laser) | $10 | 1 technician | ~200+ | 4x faster |
The Real Advantage: Productivity & Savings
While the per-tray cost is identical, the laser cleaning process delivers:
- 4x the throughput — more trays cleaned in less time.
- 75% less labor — one specialist replaces four in-house employees.
- Lower HR costs — savings on wages, benefits, and turnover.
- Less equipment wear — no grinders, pads, or tray replacements.
This means our customer gets a wash on cost-per-tray, but a win on productivity, safety, and asset preservation.
Learn more about laser cleaning
Please visit our laser cleaning pages for more in-depth information on the differences between Pulse and Continuous lasers.
Frequently Asked Questions about Laser Cleaning for Biofilm
Why choose laser cleaning for biofilm on stainless trays?
Laser cleaning is non-abrasive, precise, eco-friendly (no chemicals or water), and scalable for facilities handling thousands of trays. It removes biofilm without damaging the stainless substrate.
How does laser cleaning compare to manual methods in speed and labor?
Manual cleaning takes 7+ minutes per tray and often requires four employees, whereas Merritt’s laser process averages ~2 minutes per tray with one technician, boosting output to 200+ trays/day.
If the per-tray price is similar, where's the ROI?
Even at ~$10 per tray either way, laser cleaning delivers 4× throughput, ~75% less labor, fewer injuries, consistent results, and protects trays from abrasive damage – reducing replacement and HR costs.
Do you combine laser cleaning with dry ice blasting? Why?
Yes – dry ice blasting lifts loosened biofilm after the laser, cuts the number of laser passes, prevents secondary buildup, and leaves no residue because the dry ice sublimates.
Will laser cleaning scratch or thin our trays?
No. The process is non-abrasive and targets the contamination, not the stainless steel, preserving tray lifespan and finish.
Where does Merritt Industrial offer laser cleaning services?
Merritt Industrial offers mobile laser cleaning services for Biofilm throughout Charlotte, NC and across the Southeast.
We routinely service the following cities:
Charlotte, NC – Raleigh, NC – Asheville, NC – Greensboro, NC – Winston-Salem, NC – Concord, NC – Hickory, NC
Greenville, SC – Spartanburg, SC – Columbia, SC – Fort Mill, SC – Rock Hill, SC – Chester, SC