Keep Your Produce Fresher, Naturally.
Kopper-Keep uses the natural power of "karbon and kopper" technology to slow ripening and extend the shelf life of your fruits and vegetables - just place the copper plate and absorber bag in your veggie drawer.™
Longer Freshness
vs. no copper
Slow Ripening
The copper ions naturally inhibits bacterial, viral and fungal growth while the absorber bag eliminates the harmful gases that causes produce to ripen and decay prematurely.
Reduce Waste
Keep fruits and veggies fresh up to 3× longer — saving money and reducing household food waste.
Eco Friendly
No chemicals, no batteries, no harmful materials — just a sustainable, reusable solution.
More about Kopper-Keep
Three simple steps to fresher produce every week.
Place in Your Drawer
Adhere footing strip next to drawer side 'V' toward wall. Place plate vertically into the strip with copper exposed. Add one Ethylene Absorber pack (do NOT open bag) to drawer. Leave some air space to nearby veggies. That's it!
Copper Ions Activate
The copper ions naturally inhibits bacterial, viral and fungal growth while the absorber bag eliminates the harmful gases that causes produce to ripen and decay prematurely.
Produce Stays Fresh Longer
Enjoy fruits and vegetables that stay crisp, vibrant, and fresh for significantly longer.
The Science Behind Kopper-Keep™
Backed by peer-reviewed research on copper's natural antimicrobial and ethylene-inhibiting properties.
Copper Surfaces Reduce Microbial Contamination
Research confirms that copper surfaces significantly reduce the presence of bacteria and mold that accelerate food spoilage — extending the safe freshness window of stored produce.
Copper Inhibits Ethylene Production
Studies show copper ions interfere with ethylene biosynthesis pathways in fruits and vegetables, directly slowing the ripening process and delaying senescence.
Natural Antimicrobial Properties of Copper
Copper's oligodynamic effect — its ability to destroy microorganisms at low concentrations — has been documented for over a century and is now being applied to modern food preservation.
Ready to Stop Wasting Produce?
Pre-order your Kopper-Keep™ today and be among the first to experience fresher produce, naturally.
Kopper-Keep™
1 Pure Copper Plate + 2 Ethylene Bags
- 1 copper plate
- Reusable — lasts for years
- Safe for food contact
- 30-day freshness guarantee
Free shipping on all pre-orders
Not satisfied with your results? We'll refund your purchase — no questions asked. We're that confident in Kopper-Keep™.
What Our Customers Are Saying
Real people. Real fresher produce.
"I was skeptical at first, but my strawberries lasted almost two weeks! I used to throw out half my produce every week. Kopper-Keep has completely changed that."
Sarah M.
Portland, OR
"As someone who buys organic produce, the cost adds up fast when things go bad. These copper plates have saved me at least $30 a month in wasted food. Absolutely worth it."
James T.
Austin, TX
"My lettuce and herbs used to wilt within days. Now they stay crisp and fresh for over a week. I've already ordered a second set for my parents. Simple, natural, and it just works."
Linda K.
Chicago, IL
"The science makes total sense and the results speak for themselves. My fridge drawer looks like a farmers market all week long. Best $15 I've ever spent on my kitchen."
Marcus R.
Denver, CO
Have a Question?
We're here to help. Send us a message and we'll get back to you within 24 hours.