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Description
McKesson, OPA Concentration Indicator McKesson OPA/28 Pad 50 Test Strips Bottle Single Use, Count of 1Product Description McKesson OPA 28 Test Strips To verify the efficacy of McKesson OPA 28 Solution, user should test for the minimum effective concentration (MEC) prior to each use. 3 second dip time 90 seconds read time Large, easy to read indicator pad. Definitive color identification comparison chart on each bottle. 18 month shelf life (unopened bottle), 6 month shelf life from date of opening. Not Made with Natural Rubber Latex. Packaged: 50
Product Description- McKesson OPA/28 Test Strips
- To verify the efficacy of McKesson OPA/28 Solution, user should test for the minimum effective concentration (MEC) prior to each use.
- 3 second dip time
- 90 seconds read time
- Large, easy-to-read indicator pad.
- Definitive color identification comparison chart on each bottle.
- 18-month shelf life (unopened bottle), 6-month shelf life from date of opening.
- Not Made with Natural Rubber Latex.
- Packaged: 50 Strips Per Bottle, 2 Bottles Per Case
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Disclaimer
Herbspro.com offers nationally branded products that are produced according to manufacturing standards set by regulators at everyday low prices. Do not use unproven, unbranded products, which can pose serious risks to your health.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 1410 reviews
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Product Reviews
★★★★★ 5
Great quality. Wish it came in other colors
Awesome product, attached it to my car visor and put all vehicle docs in it.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Very Handy for Writing and EDC!
It does exactly what I need it to! It fits well on my A5 notebook and has just enough room in the pouch for a small knife, a lighter, a small flashlight, and some pens! It's a perfect edc carry for anyone who likes to have a small notebook on hand! Also the quality is really amazing and I have no doubts that this handy little pouch will last a long time.
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Reviewed in the United States on November 14, 2025
★★★★★ 3
Moderately Effective, Not Worth The Price
Doesn't hold much. The hand strap on the back as it's impossible to get it to a point where it may be tight around a large, adult hand. Unsure how well the elastic loops will safely retain pens over time.
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Reviewed in the United States on September 24, 2025
★★★★★ 5
Garantía de impermeabilidad
Un estuche muy bien construido, garantía de impermeabilidad.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
3 Pen holders
Fit my notebook
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Reviewed in the United States on May 3, 2026