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Ships within 48 hours · Estimated delivery Jul 3 - Jul 8
For Your Every Summer RSVP, with Code: SUMMER15
Description
Hanna Low Range Nitrate Checker Reagents - 25 PackHanna Low Range Nitrate Checker Reagents HC Checker Reagents for LR Nitrate HI781 25 The HI781 25 are the replacement reagents for the HI781 Nitrate Low Range Checker HC. These high quality reagents are manufactured in our state of the art facility and are clearly marked with the lot number and expiration date on each packet for traceability. The HI781 25 are high quality reagents that are pre measured, allowing for users to achieve fast and accurate

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
4.5 ★★★★★
Based on 1769 reviews
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Product Reviews
★★★★★ 5
Inexpensive and works well
Did the job and now I have this useful item any time I need to do an oil filter change. Thumbs up.
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Reviewed in the United States on March 14, 2026
★★★★★ 5
Buen producto
Excelente
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Perfect on 1999 Volvo v90 XC AWD
I had looked everywhere for an oil filter wrench that would fit the cartridge filter on this1999 Volvo v90 XC AWD. Nothing local worked and then there was the issue where the recommended filter wrench slipped.
When I was ordering the 86.6mm wrench, I looked at the pictures and noticed it said if I had a specific type of marking on the housing then I would need this 86.4mm wrench instead.
Thanks to that bit of info I can now replace the filter.
Works 100% like a charm and filter was easy to remove with a standard ratchet.
Wrench seems well made and the price was perfect, especially compared to some of the others that are $35+.
Very satisfied with this purchase.
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Reviewed in the United States on August 22, 2024
★★★★★ 5
Money Saver!!!!
Purchased yesterday and put bot cans in my gas tank. Very pleased with how it works. Had a code P0175 02 sensor bank 2. Thought I had to replace the sensors but looked into products and read the reviews of these can. Check engine light went off this morning. Drove it aggressively after I used the cans and they worked as advertised. Highly recommend.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
car performance improvement
I bought this to use in my 2021 chevrolet equinox when my check engine light came on with an exhaust issue. so far I believe it's working. I have noticed increased mileage and a little more "zip" in the engine.
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Reviewed in the United States on May 28, 2026
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