Gibson Bioscience recalls KOH 10% solution (Cat. No. 300145) due to hydrogen peroxide contamination. This may cause unintended reactions during lab use. Affected lots include 21137116 with UDI 10634853000633.
“Gibson Bioscience KOH 10% Solution Recall: Hydrogen Peroxide Contamination Hazard.” GovInfoNow, updated August 19, 2026. https://govinfonow.com/recall/62252-gibson-bioscience-koh-10-solution-recall-hydrogen-peroxide-contamination-hazard. Based on FDA recall #Z-2450-2021 (https://api.fda.gov/device/enforcement.json?search=recall_number:%22Z-2450-2021%22&limit=1).
The FDA announced on July 1, 2021, that Gibson Bioscience is recalling Potassium Hydroxide 10% (KOH 10%) because a lot was manufactured with Hydrogen Peroxide 3% instead of the correct chemical. The agency issued recall number Z-2450-2021 for the Class II voluntary recall.
How to tell if you have it
Brand: Gibson Bioscience
Product: Potassium Hydroxide 10% (KOH 10%)
Catalog No.: 300145
Lot Code: 21137116
UDI: 10634853000633
The hazard
A lot of KOH 10% was made with Hydrogen Peroxide 3% instead of KOH 10%. The product is intended for use in the demonstration of yeast and fungal elements in wet clinical preparations.
Context
GovInfoNow's records show Gibson Bioscience has a history of recalls, including this Class II voluntary action from July 1, 2021. Other recent recalls of similar products include Medline Blood Culture Kit Recall: Open Seal Risk in BD ChloraPrep Swabsticks (2025-12-24), Hologic ThinPrep CytoLyt Solution Recall: Fungal Contamination Risk (2025-12-12), and Instrumentation Laboratory Coagulation Test Kits Risk Microbial Contamination (2025-12-11).
How to tell if you have this one
Check the lot number on the container, which should be 21137116 for this recall. The unique device identifier (UDI) is 10634853000633. This product is used for fungal identification in clinical labs.
Brand
Gibson Bioscience
Category
Medical device
Based on the official FDA remedy
What to do — step by step
Check Product Details
Verify the lot number (21137116) and unique device identifier (UDI) 10634853000633 on the container.
Where it went and when
Where it was distributed
Distributed in 7 states.
Listed by the agency
Not listed
FDA distribution: “US Domestic distribution to NY, KY, ME, NC, NY, CO, CA, and SC.” States read from FDA’s own wording; “not listed” means the notice does not name it.
States: California, Colorado, Kentucky, Maine, New York, North Carolina, South Carolina.
Recall timeline
FDA terminated this recall 22 months after the firm started it.
1Firm started the recall
2FDA classified it Class II
3Published in FDA’s Enforcement Report
4FDA terminated the recall
Dates from the agency record only; steps without a date are left out.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official FDA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Official source: FDA Recall #Z-2450-2021 (July 1, 2021) — FDA publishes no per-recall page; this is the official machine-readable enforcement record. Search FDA recalls for Z-2450-2021 to see it in context.
Plain-language summary written by qwen3:4b on August 19, 2026, from the official record above. Not reviewed by a person — if it conflicts with the FDA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official FDA recall data; we don’t issue, amend or administer recalls.